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Product Numbers: WS-X5403(=), WS-X5410(=), WS-G5484(=), WS-G5486(=), WS-G5487(=)
This configuration note describes how to install and configure the Catalyst 5000 series three-port Gigabit Ethernet switching module and the nine-port Gigabit EtherChannel switching module. The following products are covered in this configuration note:
WS-X5403(=) | Three-port Gigabit Ethernet switching module |
WS-X5410(=) | Nine-port Gigabit EtherChannel switching module |
WS-G5484(=) | 1000BaseSX Gigabit Interface Converter (GBIC) |
WS-G5486(=) | 1000BaseLX/LH GBIC |
WS-G5487(=) | 1000BaseZX GBIC |
For a complete description of commands to configure and maintain Catalyst 5000 series switches, refer to the Software Configuration Guide for your switch and the Command Reference for your switch. For complete switch hardware configuration and maintenance procedures, refer to the Catalyst 5000 Series Installation Guide. For information on Catalyst 5000 series switching modules, refer to the Catalyst 5000 Series Module Installation Guide. These documents are available on the Cisco Connection Documentation, and in print.
This document contains these sections:
Table 1 describes the Catalyst 5000 series Gigabit Ethernet and Gigabit EtherChannel modules. The Gigabit Ethernet module is shown in Figure 1; the Gigabit EtherChannel Switching Module is shown in Figure 2.
| Model | Module | Description |
|---|---|---|
WS-X5403 | Gigabit Ethernet switching module (three port) | Three switched 1000-Mbps full-duplex ports1 |
WS-X5410 | Gigabit EtherChannel switching Module (GEM) (nine port) | Nine switched 1000-Mbps full-duplex ports1 |
A gigabit interface converter (GBIC) (see Figure 3) is a hot-swappable input/output (transceiver) device that plugs into a module's Gigabit Ethernet port, linking the port with the fiber-optic network. The following GBIC types are supported:
For GBIC installation information, refer to the "GBIC Handling Guidelines and Installation" section.
For GBIC cabling distance information, refer to the "GBIC Cabling Distances" section.
Table 2 describes the LEDs on the Gigabit Ethernet and Gigabit EtherChannel switching modules.
| LED | State | Description |
|---|---|---|
STATUS |
| The switch performs a series of self-tests and diagnostic tests. |
| Green | All the tests pass. |
| Red | A test other than an individual port test failed. |
| Orange | System boot, self-test diagnostics running, or the module is disabled. |
1-91 |
| Individual port status. |
| Green | The port is operational (a signal is detected). |
| Orange | The link has been disabled by software. |
| Flashing orange | The link has been disabled due to a hardware failure. |
| Off |
| 1On the Gigabit Ethernet switching module (WS-X5403), the individual port LEDs are labeled as LINK. |
This section lists the specifications for the Catalyst 5000 series Gigabit Ethernet and Gigabit EtherChannel switching modules. Specifications included are standards compliance, module specifications, and cabling distances.
Catalyst 5000 series Gigabit Ethernet and Gigabit EtherChannel switching modules comply with the standards listed in Table 3.
| Specification | Description |
|---|---|
Compliance: | CE Marking |
| UL1 1950, CSA2-C22.2 No. 950, EN3 60950, IEC4 950, TS5 001, AS/NZS6 3260 |
| FCC8 Part 15 (CFR 47) Class A, ICES9-003 Class A EN 55022 Class B, CISPR22 Class B, AS/NZS 3590 Class B, and VCCI Class B with FTP10 cables |
Table 4 lists the specifications for the Gigabit Ethernet and Gigabit EtherChannel switching modules.
| Specification | Description |
|---|---|
Dimensions (H x W x D) | WS-X5403---1.18 x 15.51 x 16.34 in. (30 x 394 x 415 mm) |
Weight | Minimum: 3 lb (1.36 kg) |
Environmental Conditions: |
|
| 32 to 104° F (0 to 40° C) |
| -40 to 167° F (-40 to 75° C) |
| 10 to 90%, noncondensing |
Connectors | SC2 |
RAM buffer memory | Gigabit Ethernet module (WS-X5403): 18 MB (6 MB per port) |
Maximum station-to-station cabling distance | Station-to-station cabling distance is dependent on the type of GBIC installed. Refer to Table 5 for a summary of cabling distance versus GBIC type. |
Frame Processing | Transparent Bridging (IEEE 802.1d), trunking (IEEE 802.1q) |
Network Management | Cisco Discovery Protocol, Ethernet MIB3 (RFC 1398), Interface Table (RFC 1573), Bridge MIB (RFC 1493), Ethernet Repeater MIB (RFC 1516), RMON4 MIB (RFC 1757), Cisco Workgroup MIB, and Cisco VLAN Trunk Protocol |
| 1The Gigabit EtherChannel switching module (WS-X5410) occupies two slots in the switch chassis. 2All GBIC types have SC connectors. 3MIB = Management Interface Base 4RMON = Remote Monitoring |
Table 5 lists the recommended maximum station-to-station cabling distances for the three types
of GBICs.
| GBIC | Wavelength (nm) | Fiber Type | Core Size (um) | Modal Bandwidth (MHz.km) | Cable Distance |
|---|---|---|---|---|---|
SX | 850 | MMF1 | 62.5 | 160 | 722 ft (220 m) |
|
|
| 62.5 | 200 | 902 ft (275 m) |
|
|
| 50.0 | 400 | 1640 ft (500 m) |
|
|
| 50.0 | 500 | 1804 ft (550 m) |
LX/LH | 1300 | MMF2 | 62.5 | 500 | 1804 ft (550 m) |
|
|
| 62.5 | 500 | 1804 ft (550 m) |
|
|
| 50.0 | 400 | 1804 ft (550 m) |
|
|
| 50.0 | 500 | 1804 ft (550 m) |
|
| SMF3 | 9/10 | - | 6.2 miles (10 km) |
ZX | 1550 | SMF | 9/10 | - | 43.5 miles (70 km) |
|
| SMF4 | 8 | - | 62.1 miles (100 km) |
| 1MMF=multimode fiber 2Mode-conditioning patch cord (CAB-GELX-625) is required. 3SMF=single-mode fiber. 4Dispersion-shifted single-mode fiber-optic cable required for 100 km distance. |
You must observe the following optical-fiber cabling restrictions when using GBICs:
Safety warnings appear throughout this publication in procedures that, if performed incorrectly, may harm you. A warning symbol precedes each warning statement.
 | Warning This warning symbol means danger. You are in a situation that could cause bodily injury. Before you work on any equipment, be aware of the hazards involved with electrical circuitry and be familiar with standard practices for preventing accidents. To see translations of the warnings that appear in this publication, refer to the appendix "Translated Safety Warnings" in the Catalyst 5000 Series Module Installation Guide. |
Use the following guidelines to ensure your safety and protect the equipment. This list does not include all potentially hazardous situations during installation, so be alert.
| Warning Only trained and qualified personnel should install or replace this equipment. |
| Warning Before working on equipment that is connected to power lines, remove jewelry (including rings, necklaces, and watches). Metal objects will heat up when connected to power and ground and can cause serious burns or weld the metal object to the terminals. |
| Warning Ultimate disposal of this product should be handled according to all national laws and regulations. |
When working with electrical equipment, exercise these basic safety guidelines:
| Warning Do not work on the system or connect or disconnect cables during periods of lightning activity. |
Use the following safety rules when working with any equipment that is disconnected from a power source but still connected to telephone wiring or other network cabling:
Electrostatic discharge (ESD) damage occurs when electronic boards or components are improperly handled. ESD can result in complete or intermittent failures of electronic components.
Guidelines for preventing ESD damage are as follows:
 | Caution For safety, periodically check the resistance value of the antistatic strap. The measurement should be between 1 and 10 megohms (Mohms). |
All Catalyst 5000 series switches support hot swapping, which lets you install, remove, replace, and rearrange switching modules without turning off the system power. When the system detects that a switching module has been installed or removed, it runs diagnostic and discovery routines automatically, acknowledges the presence or absence of the module, and resumes system operation with no operator intervention.
| Warning Only trained and qualified personnel should install or replace this equipment. |
| Warning Invisible laser radiation can be emitted from the aperture ports of the single-mode products when no fiber-optic cable is connected. Avoid exposure and do not stare into open apertures. This product meets the Class 1 Laser Emission Requirement. |
Depending on the system and placement of the Gigabit Ethernet switching module in the system's backplane, not all of the module ports may be active. Table 6 lists the Catalyst 5000 series switches and the Gigabit Ethernet switching-module ports that are available when the module is installed in that switch.
| Switch | Port Restrictions |
|---|---|
Catalyst 5002 | Port 1 is active; ports 2 and 3 are inactive. |
Catalyst 5000 | Port 1 is active; ports 2 and 3 are inactive. |
Catalyst 5505 | With Supervisor Engine III: With Supervisor Engine II: |
Catalyst 5509 | With Supervisor Engine III: With Supervisor Engine II: |
Catalyst 5500 | With Supervisor Engine III With Supervisor Engine II |
To maximize Gigabit EtherChannel switching module operation, connect the module to all three 1.2-Gb buses on the Catalyst 5505, Catalyst 5509, and Catalyst 5500 switch backplanes (the Catalyst 5000 switch has only one 1.2-Gb bus). See Table 7 for slot requirements.
| Switch | Switch Backplane Access |
Catalyst 5000 switch | Slots 3 through 5---Provide a single 1.2-Gb connection to the switch backplane. |
Catalyst 5505 switch | Slots 3 through 5---Provide three 1.2-Gb connections to the switch backplane1. |
Catalyst 5509 switch | Slots 3 through 9---Provide three 1.2-Gb connections to the switch backplane1. |
Catalyst 5500 switch | Slots 3 through 5---Provide three 1.2-Gb connections to the switch backplane1. Slots 6 through 8---Provide a single 1.2-Gb connection to the switch backplane. Slots 9 through 12 are reserved for LightStream 1010 or Catalyst 8510 modules. |
| 1In order to utilize all three of the 1.2-Gb buses, you must use a Supervisor Engine III. |
You need a flat-blade screwdriver to remove any filler (blank) switching modules and to tighten the captive installation screws that secure the modules in their slots. Whenever you handle switching modules, you should use a wrist strap or other grounding device to prevent ESD damage. See the "Preventing Electrostatic Discharge Damage" section.
To remove a switching module from a Catalyst 5000 series switch, perform these steps:
| Warning During this procedure, wear grounding wrist straps to avoid ESD damage to the module. Do not directly touch the backplane with your hand or any metal tool, or you could shock yourself. |
| Caution To prevent ESD damage, handle switching modules by the carrier edges only. |
Step 1 Disconnect any network interface cables attached to the ports on the switching module you intend to remove.
Step 2 Loosen the captive installation screws, as shown in Figure 4.
Step 3 Place your thumbs on the left and right ejector levers and simultaneously pull the levers outward to release the module from the backplane connector. Figure 4 shows a close-up of the right ejector lever.
Step 4 Grasp the switching module with one hand and place your other hand under the carrier to support and guide it out of the slot. Do not touch the printed circuit boards or connector pins.
Step 5 Carefully pull the switching module straight out of the slot, keeping one hand under the carrier to guide it.
Step 6 Place the switching module on an antistatic mat or antistatic foam, or immediately install it in another slot.
Step 7 If the slot is to remain empty, install a switching-module filler plate (part number 800-00292-01) to keep dust out of the chassis and to allow airflow through the switching-module compartment.
| Caution Always install a switching-module filler plate in empty switching module slots to allow cool air to flow across the modules. |
To install the Gigabit Ethernet switching module (WS-X5403) in a Catalyst 5000 series switch, perform these steps:
| Warning During this procedure, wear grounding wrist straps to avoid ESD damage to the module. Do not directly touch the backplane with your hand or any metal tool, or you could shock yourself. |
| Caution To prevent ESD damage, handle switching modules by the carrier edges only. Also, when removing or inserting a module, always wear an ESD wrist strap connected to the Catalyst 5000 series switch ESD wrist strap connector. |
Step 1 Take the necessary precautions to prevent ESD damage, as described in the section "Preventing Electrostatic Discharge Damage."
Step 2 Choose a slot for the new switching module. See Table 6 for restrictions. Ensure that you have enough clearance for any interface equipment that you will connect directly to the switching module ports. If possible, place switching modules between empty slots that contain only switching-module filler plates.
Step 3 Loosen the captive installation screws securing the switching-module filler plate (or the existing switching module) to the desired slot.
Step 4 Remove the switching-module filler plate (or the existing switching module). Save the switching-module filler plate for future use.
Step 5 To install the new module, hold the switching-module front panel with one hand, and place your other hand under the carrier to support the switching module. Do not touch the printed circuit boards or connector pins.
Step 6 Align the edges of the switching-module carrier with the slot guides on the sides of the switch chassis as shown in Figure 5.
Step 7 Pivot the two module ejector levers out away from the faceplate as shown in Figure 5.
Step 8 Carefully slide the switching module into the slot until the notches on both ejector levers engage the chassis sides.
Step 9 Using the thumb and forefinger of each hand, simultaneously pivot in both ejector levers, as shown in Figure 6, to fully seat the switching module in the backplane connector.
| Caution Always use the ejector levers when installing or removing switching modules. A module that is partially seated in the backplane can cause the system to halt and subsequently crash. |
Step 10 Use a screwdriver to tighten the captive installation screws on each end of the switching-module faceplate.
Step 11 If not already done, install the GBICs. See the "GBIC Handling Guidelines and Installation" section for details.
Step 12 Attach network interface cables or other devices to the interface ports. See the "Connecting GBICs to the Gigabit Ethernet and Gigabit EtherChannel Ports" section for details.
Step 13 Check the status of the module. See the "Checking the Interface Status" section for details.
To install the Gigabit EtherChannel switching module (WS-X5410), perform these steps:
| Warning During this procedure, wear grounding wrist straps to avoid ESD damage to the module. Do not directly touch the backplane with your hand or any metal tool, or you could shock yourself. |
| Caution To prevent ESD damage, handle switching modules by the carrier edges only. Also, when removing or inserting a module, always wear an ESD wrist strap connected to the Catalyst 5000 series switch ESD wrist strap connector. |
 | Tips |
Because of the GEM's two-slot design, this module is more difficult to insert and remove than single-slot modules. Use care when inserting and removing the Gigabit EtherChannel switching module. Insertion and removal should be done in a single, smooth motion.
Step 1 Take the necessary precautions to prevent ESD damage, as described in the section "Preventing Electrostatic Discharge Damage" section.
Step 2 Choose a slot for the new switching module. See Table 7 for restrictions. Ensure that you have enough clearance for any interface equipment that you will connect directly to the switching-module ports. If possible, place switching modules between empty slots that contain only switching-module filler plates.
Step 3 Loosen the captive installation screws securing the switching-module filler plates (or the existing switching modules) to the desired slots.
Step 4 Remove the switching-module filler plates (or the existing switching modules). Save the switching-module filler plates for future use.
Step 5 To install the new module, hold the switching-module front panel with one hand, and place your other hand under the carrier to support the switching module. Do not touch the printed circuit boards or connector pins.
Step 6 Align the edges of the switching-module carrier with the slot guides on the sides of the switch chassis, as shown in Figure 7.
Step 7 Pivot the two module ejector levers out away from the faceplate as shown in Figure 7.
Step 8 Carefully slide the switching module into the slot until the notches on both ejector levers engage the chassis sides.
Step 9 Using the thumb and forefinger of each hand, simultaneously pivot in both ejector levers, as shown in Figure 8, to fully seat the switching module in the backplane connector.
| Caution Always use the ejector levers when installing or removing modules. A module that is partially seated in the backplane can cause the system to halt and subsequently crash. |
Step 10 Use a screwdriver to tighten the captive installation screws on the left and right sides of the module.
Step 11 If not already done, install the GBICs. See the "GBIC Handling Guidelines and Installation" section for details.
Step 12 Attach network interface cables or other devices to the interface ports. See the "Connecting GBICs to the Gigabit Ethernet and Gigabit EtherChannel Ports" section for details.
Step 13 Check the status of the module. See the "Checking the Interface Status" section for details.
This section describes how to install, remove, and maintain GBICs.
Follow these GBIC handling guidelines:
| Caution To prevent premature failure of the GBIC, do not remove or insert the GBIC unnecessarily. GBICs have a lifetime of 100 to 500 removals and insertions. |
| Caution When removing or inserting a GBIC, always wear an ESD wrist strap connected to the Catalyst 5000 series switch ESD wrist strap connector. |
To install a GBIC, perform these steps:
Step 1 Remove the GBIC from its protective packaging.
Step 2 Verify that the GBIC is the correct type for your network by checking the part number. The number indicates whether it is 1000BaseSX, 1000BaseLX/LH, or 1000BaseZX.
Step 3 Grip the sides of the GBIC with your thumb and forefinger; insert the GBIC into the slot on the front of the Gigabit Ethernet or Gigabit EtherChannel switching module (see Figure 9). GBICs are keyed to prevent incorrect insertion.
Step 4 Slide the GBIC through the flap covering the slot opening. Continue sliding the GBIC into the slot until you hear a click. The click indicates that the GBIC is locked in the slot.
| Warning Invisible laser radiation may be emitted from the aperture ports of the single-mode fiber-optic modules when no cable is connected. Avoid exposure and do not stare into open apertures. |
Step 5 When you are ready to attach the fiber-optic cable, remove the plugs from the GBIC. Save the plug for future use.
| Warning Class 1 laser product. |
To connect GBICs to the Gigabit Ethernet or Gigabit EtherChannel ports, perform these steps:
Step 1 Remove the plugs from the GBIC optical bores; store them for future use.
Step 2 Remove the plugs from the SC connector (see Figure 10) on the fiber-optic cable. Insert the connector into the GBIC.
| Caution Do not remove the plugs from the GBIC optical bores or the fiber-optic cable until you are ready to connect the cable. The plugs protect the GBIC optical bores and cable from contamination. |
To remove a GBIC, perform these steps:
Step 1 Disconnect the fiber-optic cable from the GBIC SC-type connector.
Step 2 Release the GBIC from the slot by simultaneously squeezing the plastic tabs (see Figure 11).
Step 3 Slide the GBIC out of the slot.
Step 4 Install the plugs in the GBIC optical bores, and place the GBIC in protective packaging.
When using the 1000BaseLX/LH GBIC with 62.5-micron diameter MMF, you must install a mode-conditioning patch cord (Cisco product number CAB-GELX-625 or equivalent) between the GBIC and the MMF cable on both the transmit and receive ends of the link. The patch cord is required for link distances greater than 984 feet (300 meters).
Figure 12 shows a typical configuration using the patch cord.
Plug the end of the patch cord labeled "To Equipment" into the GBIC (see Figure 13). Plug the end labeled "To Cable Plant" into the patch panel. The patch cord is 9.84 feet (3 meters) long and has duplex SC-male connectors at each end.
Check the status of the interfaces as follows:
This section lists the default configurations of the Gigabit Ethernet and Gigabit EtherChannel switching modules and the commands you can use to customize your configuration.
The features you can customize have default values that are likely to suit your environment and need not be changed. Table 8 lists the default values of these features.
| Feature | Default Setting |
|---|---|
Port enable state | All ports are enabled1 |
Port name | None |
Port priority | Normal |
Port duplex setting | Full duplex2 |
Native VLAN | VLAN 1 |
Spanning-Tree Protocol | Enabled for VLAN 1 |
Spanning-tree port-VLAN cost | 4 |
Spanning-tree port-VLAN priority | 32 |
Gigabit EtherChannel3 | Disabled |
Table 9 lists the tasks and commands to configure the Gigabit Ethernet and Gigabit EtherChannel module ports.
| Task | Command |
|---|---|
| Setting Up the System | |
| set port name mod_num/port_num [name_string] |
| set port level mod_num/port_num {normal | high} |
| show port mod_num/port_num |
| Checking Connectivity | |
| ping host |
| show interface show ip route |
The Gigabit Ethernet switching modules use flow control, which inhibits packet transmission to the Gigabit Ethernet module for a period of time. If the Gigabit Ethernet switching module's receive buffer becomes full, the module transmits a "pause" packet that tells remote devices to delay sending more packets for a specified period of time. The Gigabit Ethernet switching module can also receive "pause" packets from other devices.
To configure flow control, enter the set port flowcontrol {receive | send} mod_num/port_num {off | on | desired} command. Table 10 lists the flow-control tasks and commands.
| Task | Command |
|---|---|
Causes the local port to send flow-control packets to a remote device. | set port flowcontrol send mod_num/port_num on |
Causes the local port to send flow-control packets if a remote device wants them (default). | set port flowcontrol send mod_num/port_num desired |
Turns off a local port's ability to send flow- control packets to a remote device. | set port flowcontrol send mod_num/port_num off |
Requires a local port to be flow controlled by a remote device. | set port flowcontrol receive mod_num/port_num on |
Causes the local port to operate with an attached device that is required to send flow-control packets or with an attached device that is not required to but may send flow-control packets. | set port flowcontrol receive mod_num/port_num desired |
Turns off an attached device's ability to send flow-control packets to a local port (default). | set port flowcontrol receive mod_num/port_num off |
This example shows how to turn on transmit flow control:
Console> (enable) set port flowcontrol send 3/1 on Port 3/1 will send flowcontrol to far end.
This example shows how to set transmit flow control to advertise that it will send flow-control frames if the attached device elects to receive them:
Console> (enable) set port flowcontrol send 3/1 desired Port 3/1 will send flowcontrol to far end if far end supports it
This example shows how to turn off transmit flow control:
Console> (enable) set port flowcontrol send 3/1 off Port 3/1 will not send flowcontrol to far end
This example shows how to turn on receive flow control:
Console> (enable) set port flowcontrol receive 3/1 on Port 3/1 will require far end to send flowcontrol
This example shows how to set receive flow control to advertise that it will accept flow-control frames if the attached device elects to transmit them:
Console> (enable) set port flowcontrol receive 3/1 desired Port 3/1 will allow far end to send flowcontrol
This example shows how to turn off receive flow control:
Console> (enable) set port flowcontrol receive 3/1 off Port 3/1 will not allow far end to send flowcontrol
To display the current flow-control status and statistics, perform this task:
| Task | Command |
|---|---|
Display the current flow-control status and statistics. | show port flowcontrol |
This example shows how to verify the flow-control configuration:
Console> show port flowcontrol
Port Send Flowcontrol Receive Flowcntl RxPause TxPause
Admin Oper Admin Oper
----- ----------------- ----------------- ------- -------
3/1 on disagree on disagree 0 0
3/2 off off off off 0 0
3/3 desired off desired off 10 10
Table 11 shows output field descriptions for the show port flowcontrol command:
| Field | Description |
|---|---|
Port | Module and port number. |
Send-Flowcontrol- | Flow-control administrative state. Possible settings: on indicates the local port sends flow control to the far end; off indicates the local port does not send flow control to the far end; desired indicates the local end sends flow control to the far end if the far end supports it. |
Send-Flowcontrol- | Flow-control operation. Possible indications: disagree indicates the two ports could not agree on a link protocol. |
Receive-Flowcntl- | Flow-control administrative state. Possible settings: on indicates the local port requires the far end to send flow control; off indicates the local port does not allow the far end to send flow control; desired indicates the local end allows the far end to send flow control. |
Receive-Flowcntl- | Flow-control operation. Possible indications: disagree indicates the two ports could not agree on a link protocol. |
RxPause | Count of pause frames received. |
TxPause | Count of pause frames transmitted. |
Ports can be characterized by their ability to generate and respond to flow control frames (pause frames) as well as the pause behavior they require of their link partner.
The Gigabit EtherChannel module's Gigabit Ethernet ports respond to received pause frames. Upon configuration, these ports advertise a pause capability. The ports at the two ends of the link negotiate a mutually acceptable flow-control configuration.
A pause frame is never generated by the Gigabit EtherChannel module's Gigabit Ethernet ports.
In all cases, pause frames received on the module are processed internally and are not switched through the system.
To configure flow-control, enter the set port flowcontrol {receive | send} [mod_num/port_num] {off | on | desired} command. Table 12 lists the flow-control tasks and commands.
| Task | Command |
|---|---|
Causes the local port to advertise that it will send flow-control frames1. | set port flowcontrol send mod_num/port_num on |
Causes the local port to advertise that it will send flow-control frames if the attached device elects to receive them1 (default). | set port flowcontrol send mod_num/port_num desired |
Turns off a local port's ability to send flow-control packets to a remote device. | set port flowcontrol send mod_num/port_num off |
Requires a local port to be flow controlled by a remote device. | set port flowcontrol receive mod_num/port_num on |
Causes the local port to operate with an attached device that is required to send flow-control packets or with an attached device that is not required to but may send flow-control packets. | set port flowcontrol receive mod_num/port_num desired |
Turns off an attached device's ability to send flow-control packets to a local port (default). | set port flowcontrol receive mod_num/port_num off |
This example shows how to turn transmit flow control on:
Console> (enable) set port flowcontrol send 5/1 on Port 5/1 flow control send administration status set to on (port will send flowcontrol to far end) Console> (enable)
This example shows how to set transmit flow control to advertise that it will send flow-control frames if the attached device elects to receive them:
Console> (enable) set port flowcontrol send 5/1 desired Port 5/1 flow control send administration status set to desired (port will send flowcontrol to far end if far end supports it) Console> (enable)
This example shows how to turn transmit flow control off:
Console> (enable) set port flowcontrol send 5/1 off Port 5/1 flow control send administration status set to off (port will not send flowcontrol to far end) Console> (enable)
This example shows how to turn receive flow control on:
Console> (enable) set port flowcontrol receive 5/1 on Port 5/1 flow control receive administration status set to on (port will require far end to send flowcontrol) Console> (enable)
This example shows how to set receive flow control to advertise that it will accept flow-control frames if the attached device elects to transmit them:
Console> (enable) set port flowcontrol receive 5/1 desired Port 5/1 flow control receive administration status set to desired (port will allow far end to send flowcontrol if far end supports it) Console> (enable)
This example shows how to turn off receive flow control:
Console> (enable) set port flowcontrol receive 5/1 off Port 5/1 flow control receive administration status set to off (port will not allow far end to send flowcontrol) Console> (enable)
To display the current flow-control status and statistics, perform this task:
| Task | Command |
|---|---|
Display the current flow-control status and statistics. | show port flowcontrol |
This example shows how to verify the flow-control configuration:
Console> (enable) show port flowcontrol
Port Send FlowControl Receive FlowControl RxPause TxPause Unsupported
admin oper admin oper opcodes
----- -------- -------- -------- -------- ------- ------- -----------
5/1 desired off off off 0 0 0
5/2 desired off off off 0 0 0
5/3 desired off off off 0 0 0
.
.
Console> (enable)
Table 13 shows the Output field descriptions for the show port flowcontrol command.
| Field | Description |
|---|---|
Port | Module and port number. |
Send-Flowcontrol- | Flow-control administrative state. Possible settings: on indicates the local port sends flow control to the far end; off indicates the local port does not send flow control to the far end; desired indicates the local end sends flow control to the far end if the far end supports it. |
Send-Flowcontrol- | Flow-control operation. Possible indications: disagree indicates the two ports could not agree on a link protocol. |
Receive-Flowcntl- | Flow-control administrative state. Possible settings: on indicates the local port requires the far end to send flow control; off indicates the local port does not allow the far end to send flow control; desired indicates the local end allows the far end to send flow control. |
Receive-Flowcntl- | Flow-control operation. Possible indications: disagree indicates the two ports could not agree on a link protocol. |
RxPause | Count of pause frames received. |
TxPause | Count of pause frames transmitted. |
Unsupported opcodes | Count of pause frames with unsupported opcodes. These are frames with a valid destination address (01:80:c2:00:00:01) and a valid Ethernet type (0x8808) but an invalid opcode. Currently we recognize pause frames with an opcode of 1 (Xoff). All others are unsupported. Note that all frames received at this multicast address are discarded by the bridge. |
| Caution Autonegotiation with Gigabit Ethernet behaves differently than autonegotiation with Ethernet or Fast Ethernet. To avoid link configuration problems, we recommend that you read and understand the information in this section and the information in the "Configuring Flow Control on the Gigabit Ethernet Switching Module (WS-X5403)" section. |
Unlike 10/100 Fast Ethernet ports, autonegotiation with Gigabit Ethernet does not involve negotiating port speed. You cannot disable autonegotiation on Gigabit Ethernet ports by setting the port speed and duplex state. With Gigabit Ethernet, the link negotiation protocol is used to exchange flow-control behavior, remote fault information, and duplex information (even though the Catalyst 5000 series gigabit ports only support full-duplex operation). In Gigabit Ethernet, you can control whether the link negotiation protocol runs with the set port negotiation command.
Table 14 shows the four possible autonegotiation configurations for a link and the resulting link status for each configuration.
| Autonegotiation State | Link Status | ||
| Near End1 | Far End2 | Near End | Far End |
Off | Off | Up | Up |
Off | On | Up | Down |
On | Off | Down | Up |
On | On | Up | Up |
| 1Refers to the GEM's front panel port. 2Refers to the remote port at the other end of the gigabit link. |
Both ends of the link must have the same setting. The link will not come up if the two ends of the link are set inconsistently (link negotiation enabled on one end and disabled on the other).
The link negotiation protocol is enabled by default. To enable or disable the link negotiation protocol on a port, perform this task:
| Task | Command |
|---|---|
Enable or disable link negotiation protocol. | set port negotiation mod_num/port_num {enable | disable} |
This example shows how to turn link negotiation off:
Console> (enable) set port negotiation 5/1 disable Port 5/1 negotiation disabled. Console> (enable)
To display the link negotiation protocol setting for the specified port, perform this task:
| Task | Command |
|---|---|
Display the link negotiation protocol setting. | show port negotiation [mod_num/port_num] |
This example shows how to verify the link negotiation configuration:
Console> (enable) show port negotiation 5/1 Port Link Negotiation ------- -------------------- 5/1 disabled Console> (enable)
This equipment has been tested and found to comply with the limits for a Class A digital device, pursuant to part 15 of the FCC rules. These limits are designed to provide reasonable protection against harmful interference when the equipment is operated in a commercial environment. This equipment generates, uses, and can radiate radio-frequency energy and, if not installed and used in accordance with the instruction manual, may cause harmful interference to radio communications. Operation of this equipment in a residential area is likely to cause harmful interference, in which case users will be required to correct the interference at their own expense.
You can determine whether your equipment is causing interference by turning it off. If the interference stops, it was probably caused by the Cisco equipment or one of its peripheral devices. If the equipment causes interference to radio or television reception, try to correct the interference by using one or more of the following measures:
Modifications to this product not authorized by Cisco Systems could void the FCC approval and negate your authority to operate the product.
Cisco Connection Online (CCO) is Cisco Systems' primary, real-time support channel. Maintenance customers and partners can self-register on CCO to obtain additional information and services.
Available 24 hours a day, 7 days a week, CCO provides a wealth of standard and value-added services to Cisco's customers and business partners. CCO services include product information, product documentation, software updates, release notes, technical tips, the Bug Navigator, configuration notes, brochures, descriptions of service offerings, and download access to public and authorized files.
CCO serves a wide variety of users through two interfaces that are updated and enhanced simultaneously: a character-based version and a multimedia version that resides on the World Wide Web (WWW). The character-based CCO supports Zmodem, Kermit, Xmodem, FTP, and Internet e-mail, and it is excellent for quick access to information over lower bandwidths. The WWW version of CCO provides richly formatted documents with photographs, figures, graphics, and video, as well as hyperlinks to related information.
You can access CCO in the following ways:
For a copy of CCO's Frequently Asked Questions (FAQ), contact cco-help@cisco.com. For additional information, contact cco-team@cisco.com.
Cisco documentation and additional literature are available in a CD-ROM package, which ships with your product. The Documentation CD-ROM, a member of the Cisco Connection Family, is updated monthly. Therefore, it might be more current than printed documentation. To order additional copies of the Documentation CD-ROM, contact your local sales representative or call customer service. The CD-ROM package is available as a single package or as an annual subscription. You can also access Cisco documentation on the World Wide Web at http://www.cisco.com, http://www-china.cisco.com, or http://www-europe.cisco.com.
If you are reading Cisco product documentation on the World Wide Web, you can submit comments electronically. Click Feedback in the toolbar and select Documentation. After you complete the form, click Submit to send it to Cisco. We appreciate your comments.
Posted: Tue Jun 15 17:35:42 PDT 1999
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