Configuring Tdp Control Channels (Optional) - Cisco Catalyst 8540 MSR Configuration Manual

Configuring Tag Switching
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Configuring TDP Control Channels (Optional)

Although not necessary for most configurations, you can change the default Tag Distribution Protocol
(TDP) control channel VPI and virtual channel identifier (VCI) if you want to use a nondefault value.
The default TDP control channel is on VPI 0 and VCI 32. TDP control channels exchange TDP HELLOs
and Protocol Information Elements (PIEs) to establish two-way TDP sessions. TVCs are created by the
exchange of PIEs through TDP control channels.
To change the TDP control channel, perform the following steps, beginning in global configuration
mode:
Command
Step 1
Switch(config)# interface atm card/subcard/port
Switch(config-if)#
Step 2 Switch(config-if)# ip address ip-address mask
Step 3 Switch(config-if)# tag-switching ip
Step 4
Switch(config-if)# tag-switching atm control-vc
vpi vci
Figure 16-1
destination switch on ATM interface 0/0/1. Note that the VPI and VCI values match on the source switch
and destination switch.
Figure 16-1 Configuring TDP Control Channels
Source switch
Examples
In the following example, a TDP control channel is configured on the source switch:
Switch(config)# interface atm 0/0/1
Switch(config-if)# ip address 1.2.0.11 255.255.255.0
Switch(config-if)# tag-switching ip
Switch(config-if)# tag-switching atm control-vc 6 32
Switch(config-if)# exit
In the following example, a TDP control channel is configured on the destination switch:
Switch(config)# interface atm 0/0/1
ATM Switch Router Software Configuration Guide
16-8
IP tagging enabled
TSP Tunnel tagging not enabled
Tagging operational
MTU = 4470
ATM tagging: Tag VPI range = 5 - 6, Control VC = 6/32
shows an example TDP control channel configuration between a source switch and
VPI = 6 VPI = 6
VCI = 32 VCI = 32
0/0/1
Chapter 16
Purpose
Enters interface configuration mode on the
specified ATM interface.
Assigns an IP address and subnet mask to the
ATM interface.
Enables tag switching of IPv4 packets.
Changes the TDP control channel.
Destination switch
Configuring Tag Switching and MPLS
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