Replacing A Standby/Active Cpm-Imm Node With Another Cpm-Imm Node - Nokia 7210 Configuration Manual

7210 SAS-M, T, R6, R12, Mxp, Sx, S Basic System
Configuration Guide
5.7.1 Replacing a Standby/Active CPM-IMM Node with
When replacing a node, the SD card used to boot the replacement node must contain
a version of the boot.tim and both.tim images that match that of the active CPM. If
the versions do not match, the bootup will not be successful.
If a VC is configured with only a single CPM-IMM node and that node fails, the entire
VC is down, including the IMM-only nodes. The IMM-only nodes reboot if they do not
hear from the active CPM node after some time.
If the stacking ports are not connected together to form a ring connecting all the
nodes of the VC, any failure in the VC (whether a link or a node failure) will isolate
some nodes off of the VC, affecting all the services on those nodes. In addition, if the
uplink is through one of the nodes that has been isolated or has failed, services using
the uplink for the entire VC are affected. The procedure here assumes a ring of
stacking ports is configured.
In the following scenario, it is assumed that a CPM-IMM node has failed and needs
to be replaced. It is assumed that a redundant CPM node is configured and another
CPM-IMM node is currently active. The replacement node might be a new node from
the factory or a node that has been previously used as an IMM node.
Step 1. Use the MAC address or slot number to determine whether the failed node
Step 2. Disconnect the stacking port on the failed node and complete the stacking
Step 3. On the active CPM, remove the configuration of the failed CPM-IMM node
Step 4. On the active CPM, add the configuration of the new CPM-IMM node as
Step 5. Save the BOF for the configuration to take effect immediately.
Step 6. If the replacement node is an existing IMM-only node, follow these steps.
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• downgrade a CPM-IMM node to an IMM-only node
Another CPM-IMM Node
is CPM-A or CPM-B. The node to be added as a CPM-IMM node must be
configured based on which one failed. For the purposes of this example, it
is assumed that CPM-B (the standby CPM) has failed.
ring.
(CPM-B) from the BOF using the bof no vc-stack-node command.
CPM-B to the BOF using the bof vc-stack-node command.
i. Remove the IMM-only node configuration from the configuration file of
the active CPM using the config system vc-stack no vc-stack-node
command.
ii. Connect to the console of the IMM-only node.
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