Cisco InfiniBand 4x User's Guide download pdf (Page 146)

132 Implementing Cisco InfiniBand on IBM BladeCenter

7.3.5 CLI reference for this section

This section includes what the appropriate CLI looks like after the steps were executed in the

GUI to create this bridge group, as well as after the changes made to the 4948. It is a useful

reference for those wanting to understand the CLI better, or for those that simply want to use

the CLI and not the GUI to achieve this task.

Example 7-4 is the CLI of the 3012 after bridge group BG1 was created and fully operational.

Example 7-4 3012 - after BG1 added

3012-1# show config

...

bridge-group 1 subnet-prefix 172.16.225.0 24

bridge-group 1 ib-next-hop 172.16.225.250

bridge-group 1 name "BG1"

interface gateway 4/1

bridge-group 1 pkey ff:ff

interface Ethernet 4/1

bridge-group 1

...

Example 7-5 is the CLI of the 4948 after changes to support this bridge group.

Example 7-5 4948 - after support for BG1 added

4848-1#show run

...

interface GigabitEthernet1/16

description Connection to 3012 Ethernet Switch Module port 4/1

switchport access vlan 88

switchport mode access

spanning-tree portfast

...

interface Vlan88

ip address 172.16.225.250 255.255.255.0

no ip route-cache

...

7.4 Using a VLAN tagged bridge group design

This section demonstrates using VLAN tagged packets on the Ethernet uplink of the gateway

module. It is assumed we are starting from scratch (configurations from the last example

have been deleted).

As discussed previously, VLANs are used on some networks to aid in reducing the size of the

L2 broadcast domain and to provide isolation of data flows between different VLAN packets.

Note that the design example shown in this section is not necessarily realistic, in that you

would usually implement tagged packets if you wanted to carry more than a single VLAN, and

we are only showing a single VLAN, albeit a tagged one. Setting up multiple VLANs is

considered beyond the scope of this document.

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Cisco InfiniBand 4x User's Guide Page 146