7210 SAS-MXP, R6, R12, S, SX, T BASIC SYSTEM
CONFIGURATION GUIDE RELEASE 22.9.R1
Virtual chassis
Step 7. If the replacement node is a new node, follow these steps:
a. Physically connect the new node into the VC ring (the stacking ports are connected to form a
ring so that an alternate path always exists).
b. Reboot the node.
c. Connect to the console of the new node.
d. Power on the node.
e. On boot up, interrupt the boot process and configure the node as CPM-IMM node by
configuring the following boot loader parameters:
• specify cpm-imm for vc-stack-node-type
• specify the slot number and MAC address of each CPM-IMM node in the bof vc-stack-
node command
Step 8. Save the BOF and allow the boot to proceed.
The node comes up as a standby CPM node and talks to the active CPM to start the HA
synchronization process. The master LED on the standby CPM will be blinking. The master LED
on the active CPM will glow steady.
Expected outcome
Services are not interrupted during the preceding process because the active CPM (CPM-A) is present
and has not been rebooted (assuming the active CPM has an uplink to the network). If one of the IMM-only
nodes was converted to a CPM-IMM node, the services on that IMM are affected as the node is rebooted
to effect the change to a CPM-IMM node.
5.7.2 Replacing an IMM-only node with another node
About this task
In this scenario, it is assumed that the IMM-only node has failed and needs to be replaced. The
replacement node can be a new node from the factory or a node that has been previously used as an IMM
node in another VC. In the former case, the procedure is similar to adding a node received from factory;
see First time manual boot of nodes in the stack starting at step 9.
The SD card used to boot the node must contain a version of the TiMOS image (boot.tim) that matches
that of the active CPM. If the version do not match, the boot will not be successful.
If a ring of stacking ports is not configured, any failure in the stack (either a link or node failure) will isolate
some nodes off of the stack, affecting all the services on those nodes. In addition, if the uplink is available
through one of the nodes that is now isolated or failed, services using the uplink for the entire VC are
affected.
The following procedure assumes a ring is configured and that the replacement node had been previously
used as an IMM node in another VC:
Procedure
Step 1. Disconnect the stacking port of the failed IMM-only node.
Step 2. Connect to the console of the active CPM node.
Step 3. On the active CPM node, use the no vc-stack-node command to remove the failed IMM-only
node configuration from the configuration file of the active CPM.
3HE 18197 AAAB TQZZA
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