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This chapter describes special features added to the LightStream 1010 switch configuration software. Most LightStream 1010 ATM switch users probably will not need to use these features.
This chapter includes descriptions and examples needed to configure the following special features:
The ATM interface to a public network commonly uses an E.164 address for ATM signaling, with NSAP addresses carried in the subaddress fields of the message.
Configuring an E.164 one-to-one translation table to an interface is a two step process and is described in this section:
Step 1 Configure an interface as an E.164 interface
Step 2 Configure the E.164 Translation table
The one-to-one translation table allows signaling to look up the E.164 addresses and the NSAP addresses in a database. This allows a one-to-one correspondence between NSAP addresses and E.164 addresses.
Egress Operation--When a signaling message attempts to establish a call out an interface, the called and calling party addresses are in NSAP format.
If the interface has been configured for E.164 translation, signaling will attempt to find a match for the NSAP addresses. If found, the E.164 addresses corresponding to the NSAP addresses will be placed into the called and calling party addresses. The original NSAP addresses will be placed into the called and calling party subaddresses.
Ingress Operation--If the interface is configured for E.164 translation, the called and calling party addresses are in E.164 format.
If the original NSAP-formatted called and calling addresses have been carried in subaddresses, then those addresses will be used to forward the call.
If subaddresses are not present due to the network blocking the subaddresses, or due to the switch at the entry to the E.164 network not using subaddresses, signaling will attempt to find a match for the NSAP address in the ATM E.164 translation table.
E.164 Addresses in the Translation Table--If matches are found, the NSAP addresses corresponding to the E.164 addresses will be placed into the called and calling party addresses. The call will then be forwarded using the NSAP addresses.
Configuring one-to-one E.164 translation tables requires the following steps:
Step 1 Configure specific ATM interface(s) to connect to E.164 public networks to use the translation table.
Step 2 Configure the translation table.
Step 3 Add entries to the translation table for both the called and calling parties.
This section describes configuration of E.164 translation on the interface. Use the no form of the following commands to disable:
| Task | Command |
|---|---|
| At the privileged EXEC prompt, enter configuration mode from the terminal. | configure1 [terminal] |
| Select interface port. | interface atm card/subcard/port |
| Configure the ATM E.164 interface. | atm e164 translation |
| Return to EXEC configuration mode. | ex |
| Change to E.164 ATM configuration mode. | atm e164 translation-table |
| Configure the E.164 translation table. | e164 address address nsap-address nsap_address |
The following example configures the ATM interface 0/0/1 to use the one-to-one E.164 translation table:
Switch#config terminal
Enter configuration commands, one per line. End with CNTL/Z.
Switch(config)#interface atm 0/0/1
Switch(config-if)#atm e164 translation
Switch(config-if)#ex
Switch(config)#atm e164 translation-table
Switch(config-atm-e164)#e164 address 1111111 nsap-address 11.111111111111111111111111.112233445566.11
Switch(config-atm-e164)#e164 address 2222222 nsap-address 22.222222222222222222222222.112233445566.22
Switch(config-atm-e164)#e164 address 3333333 nsap-address 33.333333333333333333333333.112233445566.33
Use the show running-config command to display the ATM E.164 translation table configuration.
To display the ATM E.164 translation table configuration, perform the following task in user EXEC mode:
| Task | Command |
|---|---|
| Display theE.164 translation table configuration. | show running-config |
| Display the E.164 address configuration on a per port basis. | show atm interface atm card/sub_card/port |
The following example displays the E.164 translation table configuration:
Switch#show running-config Building configuration... Current configuration: ! version 11.2 no service pad service udp-small-servers service tcp-small-servers ! hostname Switch ! ! username dtate ! atm e164 translation-table e164 address 1111111 nsap-address 11.111111111111111111111111.112233445566.11 e164 address 2222222 nsap-address 22.222222222222222222222222.112233445566.22 e164 address 3333333 nsap-address 33.333333333333333333333333.112233445566.33 ! atm service-category-limit cbr 64544 atm service-category-limit vbr-rt 64544 atm service-category-limit vbr-nrt 64544 atm service-category-limit abr-ubr 64544 atm address 47.0091.8100.0000.0040.0b0a.2b81.0040.0b0a.2b81.00 --More-- <Information Deleted> Switch#
The following example displays the E.164 configuration for an ATM interface 0/0/1:
Switch#show atm interface atm 0/0/1
Interface: ATM0/0/1 Port-type: oc3suni
IF Status: DOWN Admin Status: administratively down
Auto-config: enabled AutoCfgState: waiting for response from peer
IF-Side: Network IF-type: UNI
Uni-type: Private Uni-version: V3.0
Max-VPI-bits: 8 Max-VCI-bits: 14
Max-VP: 255 Max-VC: 16383
Svc Upc Intent: pass Signalling: Enabled
ATM Address for Soft VC: 47.9999.9999.0000.0000.0000.0216.4000.0c80.0010.00
ATM E164 Translation Interface
Configured virtual links:
PVCLs SoftVCLs SVCLs PVPLs SoftVPLs SVPLs Total-Cfgd Installed-Conns
2 0 0 0 0 0 2 0
Logical ports(VP-tunnels): 0
Input cells: 0 Output cells: 0
5 minute input rate: 0 bits/sec, 0 cells/sec
5 minute output rate: 0 bits/sec, 0 cells/sec
Input AAL5 pkts: 0, Output AAL5 pkts: 0, AAL5 crc errors: 0
Switch#
To enable and disable signaling on an interface, use the following EXEC commands. Use the no form of this command to disable signaling.
| Task | Command |
|---|---|
| At the privileged EXEC prompt, enter configuration mode from the terminal. | configure1 [terminal] |
| Select the interface to be configured. | interface atm card/sub_card/port |
| Shutdown the interface. | shutdown |
| Disable signaling on the interface. | no atm signalling-enable |
| Enable signaling on the interface. | atm signalling-enable |
| Reactivate the interface. | no shutdown |
| Return to EXEC configuration mode. | ^Z |
The following example shuts down, then disables and enables signaling on ATM interface 0/0/0:
Step 1 Change to interface configuration mode for ATM interface 0/0/0.
Step 2 Shut down the interface using the shutdown command.
Step 3 Disable signaling in the interface using the no atm signalling-enable command.
Step 4 Enable signaling in the interface using the atm signalling-enable command.
Step 5 Bring the interface back up using the no shutdown command.
Following is an example:
Switch#config term Enter configuration commands, one per line. End with CNTL/Z. Switch(config)#interface atm 0/0/0 Switch(config-if)#shutdown Switch(config-if)# %ATMSIG-4-CONFIG_ERROR: Configuration Error: Missing QSAAL VC on ATM0/0/0 %LINEPROTO-5-UPDOWN: Line protocol on Interface ATM0/0/0, changed state to down %LINEPROTO-5-UPDOWN: Line protocol on Interface ATM0/0/1, changed state to down %LINK-5-CHANGED: Interface ATM0/0/0, changed state to administratively down %LINK-5-CHANGED: Interface ATM0/0/1, changed state to going down %LINK-3-UPDOWN: Interface ATM0/0/1, changed state to down Switch(config-if)#no atm signalling-enable Switch(config-if)#atm signalling-enable Switch(config-if)#no shutdown Switch#
Use the atm svc-frame-discard-on-aal5ie command to select the criteria used to install frame discard on SVCs. The default is to install packet discard based on the presence of the AAL5 information element in the SETUP message.
The global configuration function is used to modify the frame discard for all ABR connections.
To configure frame discard, perform the following task in global configuration mode:
| Task | Command |
|---|---|
| At the privileged EXEC prompt, enter configuration mode from the terminal. | configure1 [terminal] |
| Configure the SVC frame discard. | atm svc-frame-discard-on-aal5ie |
This global configuration command changes the information that the switch uses to decide whether or not to install frame discard on SVCs. UNI 4.0 signaling allows for explicit signaling of frame discard. Pre-UNI 4.0 versions use the presence of the AAL5 information elements to determine whether or not to install frame discard (if the AAL5 information element is present, install frame discard, otherwise do not).
For example:
In the following example, the switch behavior is set to not use the AAL5 information element to dictate frame discard.
Switch(config)# no atm svc-frame-discard-on-aal5ie Switch(config)#
Use the show running-config command to display the ATM frame discard configuration.
To display the frame discard configuration, perform the following task in user EXEC mode:
| Task | Command |
|---|---|
| Display the frame discard configuration. | show running-config |
The following example displays the frame discard configuration:
Switch#show running-config Switch#show running-config Building configuration... Current configuration: ! ! Last configuration change at 19:02:51 UTC Thu Feb 27 1997 ! version 11.2 no service pad service udp-small-servers service tcp-small-servers ! hostname Switch ! boot bootldr bootflash:/tftpboot/rbhide/ls1010-wp-mz.112-1.4.WA3.0.15 ! network-clock-select 1 ATM0/0/0 network-clock-select 4 ATM0/0/0 ip host-routing no atm svc-frame-discard-on-aal5ie
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