Operating instructions

108 Cisco Systems Intelligent Gigabit Ethernet Switch Module
Base configuration options common to all examples
Here, we list some configuration options established that are common to all of the examples.
These are only for demonstration purposes in the examples and may or may not be
duplicated in your particular environment.
All example configurations will have some combination of the following VLANs configured:
VLAN 2, 10, 15, 20, 25, 30, 35, 40, 45, and/or 50.
The following VLANs will be placed on the following blade servers (exact number and
placement will depend on such things as trunking and SLB teaming for the given example):
򐂰 BladeServer1: VLAN 10, 15, 20, 25
򐂰 BladeServer2: VLAN 10, 20
򐂰 BladeServer3: VLAN 30
򐂰 BladeServer4: VLAN 35, 40, 45, 50
All configurations assume that VLAN 2 is the native VLAN (native VLAN is untagged) for all
trunked links except g0/15 and g0/16 (this is the default for the Cisco Systems IGESM).
All configurations assume that VLANs carried on trunks will be limited to only those that are
necessary (this is a good security practice).
All configurations presented in this section force 6500-1 to be the Spanning Tree root for all
VLANs. There is a high probability that any existing network will already have a desired switch
(or switches if load balancing VLANs) configured as the root. It is very important that you
understand the proper selection of the root bridge, and it is
not recommended that the Cisco
Systems IGESM be allowed to become the root bridge. Allowing the Cisco Systems IGESM
to become the root bridge can result in sub-optimal data flow within the layer 2 network.
Cisco Systems IGESM base configurations
Only a couple of things needed to be done to Cisco Systems IGESM1 and Cisco Systems
IGESM2 to prepare them for configuration for the examples after their configurations were
wiped out:
򐂰 Add the correct host name to each Cisco Systems IGESM, from the config term mode:
– On Cisco Systems IGESM1: hostname CIGESM1
– On Cisco Systems IGESM2: hostname CIGESM2
򐂰 Place each server in the IBMLAB VTP domain:
– On each Cisco Systems IGESM: vtp domain IBMLAB
If this were a brand new BladeCenter, you would have to connect to the Management Module
and go into I/O module tasks and Advanced Settings for each IGESM and Enable External
Ports (default is Disabled) at least once.
Note: Available features and command syntax can be different with different versions of
code. This document was prepared using the features and syntax from the aforementioned
revisions of code, and as such, might vary from other revisions. For complete and current
lists of available features and commands for these products, visit the IBM or Cisco Web
sites.
Note: The VLANs chosen here are only for the purposes of demonstration and may or may
not be a part of your particular network.