Cisco InfiniBand 4x User's Guide download pdf (Page 150)

136 Implementing Cisco InfiniBand on IBM BladeCenter

After logging into the 4948 with sufficient privileges, execute the commands as shown in

Example 7-6 on the 4948 (items starting with an exclamation mark (!) are for

reference/comments only and will not be executed).

Example 7-6 Configure the 4948 to accept packets tagged with VLAN 88

! Assumes starting from enable mode, enter config mode

conf t

! Change int gi1/16 to support tagging for VLAN 88

int gi1/16

description Connection to 3012 Ethernet Switch Module port 4/1 - VLAN 88

! Tell the port to use 802.1Q tagging encapsalation

switchport trunk encapsulation dot1q

! Force the port to trunk mode to support multiple VLANs and tagging

switchport mode trunk

! Restrict VLANs to this single VLAN (can carry more if desired)

switchport trunk allowed vlan 88

! Change portfast to work in trunk mode

spanning-tree portfast trunk

! Exit config mode

end

! Save config to NVRAM

write

5. When the changes have been made to both the Ethernet gateway module and the 4948,

the InfiniBand client at 172.16.225.10 can successfully ping the VLAN 88 default gateway

IP address (172.16.225.250) on the 4948 as shown in Example 7-7.

Example 7-7 InfiniBand host pinging the default gateway

[root@localhost ~]# ping -c 5 172.16.225.250

PING 172.16.225.250 (172.16.225.250) 56(84) bytes of data.

64 bytes from 172.16.225.250: icmp_seq=1 ttl=255 time=0.303 ms

64 bytes from 172.16.225.250: icmp_seq=2 ttl=255 time=0.267 ms

64 bytes from 172.16.225.250: icmp_seq=3 ttl=255 time=0.289 ms

64 bytes from 172.16.225.250: icmp_seq=4 ttl=255 time=0.335 ms

64 bytes from 172.16.225.250: icmp_seq=5 ttl=255 time=0.291 ms

--- 172.16.225.250 ping statistics ---

5 packets transmitted, 5 received, 0% packet loss, time 4000ms

rtt min/avg/max/mdev = 0.267/0.297/0.335/0.022 ms

[root@localhost ~]#

7.4.4 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.

Note that we include only the commands that effect the area of the device that we configured.

We do not include the entire device configuration.

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