Switch Sfm Mastership; Replacing An Sfm - Juniper JUNOS - NETWORK OPERATION GUIDE REV1 Network Operation Manual

For M160 routers:
user@host> show chassis sfm
Temp
Slot State
Packet scheduling mode: Disabled
The sample output confirms that the SFM online command has been initiated and
What It Means
specifies to use the show chassis sfm CLI command to verify that the SFM is online.
The command output shows that the SFM is present and that the values for the SFM
status are 0 for approximately 5 seconds until the SFM is active.
Step 3: Switch SFM Mastership
You can switch SFM mastership on M40e routers only. By default, the SFM in slot 0
Purpose
( SFM0 ) is the master and the SFM in slot 1 ( SFM1 ) is the backup.
To change the default master SFM, include the sfm statement at the [edit chassis
redundancy] hierarchy level in the configuration. For more information, see the
JUNOS System Basics Configuration Guide.
To switch SFM mastership, use the following CLI command:
Action
Sample Output user@host> request chassis sfm master switch
warning: Traffic will be interrupted while the PFE is re-initialized
Toggle mastership between system forwarding module? [yes,no] (no) yes
Switch initiated, use "show chassis sfm" to verify
The following command output displays if you use the no-confirm option:
user@host> request chassis sfm master switch no-confirm
Switch initiated, use "show chassis sfm" to verify

Replacing an SFM

To replace an SFM, follow these steps:
Action
1. Have ready an antistatic mat for the SFM.
2. Attach an electrostatic discharge (ESD) wrist strap to your bare wrist, and
3. Remove the router rear component cover by loosening the screws on the
4. Press the offline button on the SFM faceplate and hold it down until the red FAIL
CPU Utilization (%)
(C)
0 Online 41
1 Online 44
2 Online 44
3 Present 0
user@host> request chassis sfm master switch <no-confirm>
connect the wrist strap to one of the two ESD points on the chassis.
corners of the cover and pulling it straight out from the chassis.
LED lights (about 5 seconds).
Memory Utilization (%)
Total Interrupt DRAM (MB) Heap
3 0 64
3 0 64
3 0 64
0 0
Chapter 44: Monitoring Redundant SFMs
Buffer
17 46
17 46
17 46
0 0 0
Replacing an SFM
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