Cisco Systems Cisco IOS XR Information About the Catalyst Switch Configuration, Revision number

Chapter 3 Bringing Up the Cisco IOS XR Software on a Multishelf System

Configuring the External Cisco Catalyst 6509 Switches

Information About the Catalyst Switch Configuration

The configuration described in the following sections places all Catalyst ports in VLAN 1. The configuration on the Catalyst switches is the same as the configuration on the Cisco CRS-1 router internal Broadcom switches—they all participate in a Multiple Spanning Tree (MST) region with one MST instance.

The Catalyst switches are made the root of the network by assigning them the highest priority. Because there are two Catalyst switches, one is selected as the root-bridge device. Configure the primary Catalyst switch with priority 0 to make the switch the root of the network. Configure the second Catalyst switch with a number greater than 0 and less than 32768. If the primary Catalyst switch (priority 0) fails, the second switch becomes the root of the network.

Configuring the Catalyst Switches

The Cisco IOS software configuration must be applied to both external Catalyst switches.

Note Configure the primary Catalyst switch with priority 0 to make the switch the root of the network. Configure the second Catalyst switch with a number greater than 0 and less than 32768. If the primary Catalyst switch (priority 0) fails, the second switch becomes the root of the network.

To configure the Catalyst 6509 switches, use the following procedure:

SUMMARY STEPS

1.configure

2.spanning-tree portfast default

3.spanning-tree mode mst

4.spanning-tree mst configuration

5.name mst_region

6.revision number

7.instance instance_id vlan range

8.end

9.spanning-tree mst hello-time seconds

10.spanning-tree mst forward-time seconds

11.spanning-tree mst max-age seconds

12.spanning-tree mst max-hops hops

13.spanning-tree mst instance_id priority priority

14.udld aggressive

15.udld message time interval

16.interface gigabitethernet slot/port

17.switchport

18.switchport mode access

	Cisco IOS XR Getting Started Guide
OL-10957-02		3-11