
Summary of disconnect procedure to be performed for each example
When performing initial configurations or making changes to existing configurations that might have an impact on Spanning Tree (such as changing link aggregation), it is recommended that you leave connections uncabled or shut down prior to making the configuration changes. This reduces the likelihood of any temporary Spanning Tree loops and possible
Shut down the ports on GbESM_1 and GbESM_2
/oper/port EXT1/dis /oper/port EXT2/dis
Shut down the ports on Core1 and Core2
conf t
int range
Cisco 3560G switch configuration
In this topology, each Cisco switch connects two ports (g0/1 and g0/2) to its adjoining Nortel GbESM (EXT1 and EXT2). These aggregated links are to carry VLAN 5, 10, 20, and 99. VLAN 99 is meant to be a management VLAN, and the only blade server in the chassis to have access to it is blade server 4. The native VLAN here is 5.
In the switch configuration mode, create the VLANs and IP interfaces first, as shown in Example
Example 7-1 Create the VLANs and IP interfaces first
:
conf t
!
vlan 5
name native vlan 10
name vlan_green vlan 20
name vlan_red vlan 99
name mgmt
By issuing do sh vlan, you can see the intended VLAN layout, as shown in Example
Example 7-2 Verifying the VLAN setup
Core1(config)#do sh vlan
VLAN | Name | Status | Ports |
|
|
1 | default | active | Gi0/3, Gi0/4, Gi0/5, Gi0/6 | ||
|
|
| Gi0/7, Gi0/8, Gi0/9, Gi0/10 | ||
|
|
| Gi0/11, | Gi0/12, Gi0/13, | Gi0/14 |
|
|
| Gi0/15, | Gi0/16, Gi0/17, | Gi0/18 |
|
|
| Gi0/19, | Gi0/20, Gi0/21, | Gi0/22 |
|
|
| Gi0/25, | Gi0/26, Gi0/27, | Gi0/28 |
5 | native | active |
|
|
|
10 | vlan_green | active |
|
|
|
20 | vlan_red | active |
|
|
|
99 | mgmt | active |
|
|
|
1002 | act/unsup |
|
|
|
Chapter 7. Nortel Networks L2/3 GbESM configuration and network integration 71