Nokia 7210 SAS-M User Manual

Virtual Chassis
240
7210 SAS-M, T, R6, R12, Mxp, Sx, S Basic System
Configuration Guide
3HE 16132 AAAB TQZZA Edition: 01
• In the boot loader context, the imm-only nodes wait to receive VC management
messages from the active CPM, when the active CPM has booted up. When the
imm-only nodes receive VC management messages that contain their MAC
address and slot number, they proceed to boot up using the TiMOS image
(both.tim). A local copy of the TiMOS image is used if it matches the version
available on the active CPM; otherwise, the imm-only nodes retrieve the newer
version from the active CPM. The imm-only nodes do not participate in the CPM
election process.
• In the TiMOS context, the cpm-imm nodes go through the CPM election
arbitration process to elect the active CPM node. The active CPM node then
initializes the chassis manager and initiates a HA reconcile process with the
standby CPM node.
If both the cpm-imm nodes come up as active, which is detected by both nodes
receiving each other's VC management messages claiming themselves to be active,
the node with the higher slot number reboots itself.
5.7 Replacing and Upgrading a Node in a VC
This section describes how to:
• replace a CPM-IMM node or IMM-only node
• upgrade an existing IMM-only node to a CPM-IMM node
• downgrade a CPM-IMM node to an IMM-only node
5.7.1 Replacing a Standby/Active CPM-IMM Node with
Another CPM-IMM Node
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.

Nokia 7210 SAS-M Specifications

General

Brand	Nokia
Model	7210 SAS-M
Category	Cell Phone
Language	English