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This chapter describes how to configure the Catalyst 5000 series Layer 3 fabric integration module.
This chapter consists of these sections:
The Layer 3 fabric integration module seamlessly integrates the Catalyst 5500 switching fabric and the Catalyst 8510 Campus Switch Router (CSR) switching fabric in a Catalyst 5500 chassis.
The module consists of eight external 100BaseFX Fast Ethernet ports and four 100-Mbps internal interfaces that integrate the Catalyst 5500 switching backplane to the Catalyst 8510 CSR switching backplane. The module can be installed in slots 9 through 12 in the Catalyst 5500 switch to bridge the two backplanes.
The eight external Fast Ethernet ports function exactly as any other Catalyst 5000 series 100BaseFX Fast Ethernet MMF ports. When the fabric integration module is installed in slot 9 through 12 of the Catalyst 5500 chassis, these eight ports function normally regardless of whether there is a Catalyst 8510 CSR Switch Route Processor (SRP) installed in slot 13. For complete information on Fast Ethernet port configuration, see the "Configuring Ethernet, Fast Ethernet, and Gigabit Ethernet Switching" chapter.
By default, the four internal interfaces are configured as a Fast EtherChannel InterSwitch Link (ISL) VLAN trunk that provides an 800-Mbps (400-Mbps full-duplex) link between the Catalyst 5500 switch and the Catalyst 8510 CSR switch.
To achieve connectivity between the two switches, you must configure a port-channel interface on the Catalyst 8510 CSR switch and group the four internal interfaces to that port-channel interface. You must then configure subinterfaces on the port-channel interface. Configure a subinterface for each VLAN configured on the Catalyst 5500 switch. For each subinterface, you must specify ISL encapsulation and assign an IP address and subnet mask.
Frames originating on the Catalyst 5000 switch backplane are forwarded across the trunk link to the subinterfaces that you configure. Traffic is routed between VLANs (subinterfaces) as appropriate. Frames originating on the Catalyst 8510 CSR are forwarded across the trunk link to the Catalyst 5500 switch where they are switched as appropriate.
The eight external 100BaseFX Fast Ethernet ports of the fabric-integration module (ports 1-8) have the same default configuration as all Catalyst 5000 series Fast Ethernet ports. For information on the Fast Ethernet port default configuration, refer to the "Default Ethernet, Fast Ethernet, and Gigabit Ethernet Configuration" section of the "Configuring Ethernet, Fast Ethernet, and Gigabit Ethernet Switching" chapter.
Table 23-1 shows the Catalyst 5500 default configuration for the Layer 3 fabric integration module internal interfaces.
| Feature | Default Value |
|---|---|
Port enable state | All ports enabled |
Port name | None |
Port priority | Normal |
Duplex mode | Full-duplex |
Native VLAN | VLAN 1 |
Port VLAN cost | 19 |
Fast EtherChannel | Enabled (four-port bundle) |
Trunking | isl encapsulation, nonegotiate mode |
Allowed VLAN range | 1-1000 |
Table 23-2 shows the Catalyst 8510 CSR default configuration for the fabric integration module internal interfaces.
| Feature | Default Value |
|---|---|
Fast EtherChannel |
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These hardware and software restrictions apply when using the Layer-3 fabric integration module:
These sections describe how to configure the Layer 3 fabric integration module:
You can configure the eight external 100BaseFX Fast Ethernet ports on the Layer 3 fabric integration module exactly as you configure any Fast Ethernet port on the Catalyst 5000 series switches.
For information on configuring Fast Ethernet ports, refer to the "Configuring Ethernet, Fast Ethernet, and Gigabit Ethernet Switching" chapter.
 | Caution Changing the default configuration of the internal interfaces from the Catalyst 5500 CLI without making the appropriate adjustments from the Catalyst 8510 CSR CLI can cause problems. Make sure that when you make configuration changes to the internal interfaces that you make the proper changes on both the Catalyst 5000 and the Catalyst 8510 CSR. |
The default Catalyst 5000 configuration for the four internal interfaces should be adequate for most situations. The interfaces form a full-duplex Fast EtherChannel ISL trunk link between the Catalyst 5500 and the Catalyst 8510 CSR switches.
To change the default configuration for the internal interfaces, see the following sections:
To configure interVLAN routing on the internal interfaces of the Layer 3 fabric integration module, you must first connect to the Catalyst 8510 CSR CLI through the console port or via Telnet.
These sections describe how to configure interVLAN routing on the fabric integration module internal interfaces. You must perform these configuration tasks in the order they appear:
1. Creating a Port-Channel Interface
2. Grouping the Internal Interfaces to the Port-Channel Interface
Before you can configure interVLAN routing on the internal interfaces, you must configure a port-channel interface on which you will create a subinterface for each VLAN for which you want to route traffic. A port-channel interface is a logical interface into which you group physical interfaces to form a single logical link.
To create a port-channel interface on the Catalyst 8510 CSR, perform this task:
| Task | Command |
|---|---|
Step 1 Enter privileged mode. | enable |
Step 2 Enter configuration mode. | configure terminal |
Step 3 Create a port-channel interface (valid interface_number range is 1-4). | interface port-channel interface_number |
Step 4 Exit configuration mode. | ^Z |
Step 5 Verify the port-channel interface configuration. | show interface port-channel interface_number |
Step 6 Save the changes to NVRAM. | write memory |
This example shows how to create a port-channel interface on the Catalyst 8510 CSR and how to verify the configuration:
Switch>enable
Password:
Switch#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#interface port-channel 1
Switch(config-if)#^Z
Switch#show interface port-channel 1
Port-channel1 is down, line protocol is down
Hardware is FEChannel, address is 0000.0000.0000 (bia 0000.0000.0000)
MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec, rely 255/255, load 1/255
Encapsulation ARPA, loopback not set, keepalive set (10 sec)
Half-duplex, Unknown Speed
ARP type: ARPA, ARP Timeout 04:00:00
No. of active members in this channel: 0
Last input never, output never, output hang never
Last clearing of "show interface" counters never
Queueing strategy: fifo
Output queue 0/40, 0 drops; input queue 0/300, 0 drops
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
0 packets input, 0 bytes
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
0 watchdog, 0 multicast
0 input packets with dribble condition detected
0 packets output, 0 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
Switch#write memory
Building configuration...
Switch#
To configure interVLAN routing on the fabric integration module port-channel interface, perform this task:
| Task | Command |
|---|---|
Step 1 Enter configuration mode. | configure terminal |
Step 2 Enter interface configuration mode for the first fabric integration module internal interface. | interface fastethernet slot/0/interface |
Step 3 Associate the internal interface with the port-channel interface you created. | channel-group port_channel_interface_number |
Step 4 Exit interface configuration mode. | exit |
Step 5 Repeat Step 3, Step 4, and Step 5 to associate the remaining internal interfaces with the port-channel interface you created. |
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Step 6 Exit configuration mode. | ^Z |
Step 7 Save the changes to NVRAM. | write memory |
This example shows how to group the four internal interfaces to a port-channel interface (the fabric integration module is installed in slot 10 of the Catalyst 5500 switch chassis):
Switch#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Switch(config)#interface fastethernet 10/0/0 Switch(config-if)#channel-group 1 Switch(config-if)#exit Switch(config)#interface fastethernet 10/0/1 Switch(config-if)#channel-group 1 Switch(config-if)#exit Switch(config)#interface fastethernet 10/0/2 Switch(config-if)#channel-group 1 Switch(config-if)#exit Switch(config)#interface fastethernet 10/0/3 Switch(config-if)#channel-group 1 Switch(config-if)#^Z Switch#write memory Building configuration... Switch#
InterVLAN routing is achieved by configuring subinterfaces on the port-channel interface, one for each VLAN between which you want to route.
To configure interVLAN routing on the fabric integration module port-channel interface, perform this task:
| Task | Command |
|---|---|
Step 1 Enter configuration mode. | configure terminal |
Step 2 Create a subinterface on the port-channel interface you created. | interface port-channel interface.subinterface |
Step 3 Associate the subinterface with a VLAN (this VLAN typically exists already on the Catalyst 5500 switch). | encapsulation isl vlan_id |
Step 4 Assign an IP address and subnet mask to the subinterface. | ip address ip_addr subnet_mask |
Step 5 Exit interface configuration mode. | exit |
Step 6 Repeat Step 3, Step 4, and Step 5 to create and configure additional subinterfaces on the fabric integration module port-channel interface. Configure one subinterface for each VLAN for which you want to route traffic. |
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Step 7 Exit configuration mode. | ^Z |
Step 8 Verify the configuration for each subinterface. | show interface port-channel interface.subinterface |
Step 9 Save the changes to NVRAM. | write memory |
This example shows how to create three subinterfaces on the port-channel interface, configure them for interVLAN routing (VLANs 1, 2, and 3), and verify the configuration:
Switch#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Switch(config)#interface port-channel 1.1 Switch(config-subif)#encapsulation isl 1 Switch(config-subif)#ip address 172.20.52.33 255.255.255.224 Switch(config-subif)#exit Switch(config)#interface port-channel 1.2 Switch(config-subif)#encapsulation isl 2 Switch(config-subif)#ip address 172.20.52.65 255.255.255.224 Switch(config-subif)#exit Switch(config)#interface port-channel 1.3 Switch(config-subif)#encapsulation isl 3 Switch(config-subif)#ip address 172.20.52.97 255.255.255.224 Switch(config-subif)#^Z Switch#show interface port-channel 1.1 Port-channel1.1 is up, line protocol is up Hardware is FEChannel, address is 0000.0000.0000 (bia 0000.0000.0000) Internet address is 172.20.52.33/27 MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec, rely 255/255, load 1/255 Encapsulation ISL Virtual LAN, Color 1. ARP type: ARPA, ARP Timeout 04:00:00 Switch#show interface port-channel 1.2 Port-channel1.2 is up, line protocol is up Hardware is FEChannel, address is 0000.0000.0000 (bia 0000.0000.0000) Internet address is 172.20.52.65/27 MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec, rely 255/255, load 1/255 Encapsulation ISL Virtual LAN, Color 2. ARP type: ARPA, ARP Timeout 04:00:00 Switch#show interface port-channel 1.3 Port-channel1.3 is up, line protocol is up Hardware is FEChannel, address is 0000.0000.0000 (bia 0000.0000.0000) Internet address is 172.20.52.97/27 MTU 1500 bytes, BW 10000 Kbit, DLY 1000 usec, rely 255/255, load 1/255 Encapsulation ISL Virtual LAN, Color 3. ARP type: ARPA, ARP Timeout 04:00:00 Switch#write memory Building configuration... Switch#
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