Juniper JUNOS - NETWORK OPERATION GUIDE REV1 User Manual

Replacing an SFM ! 593
Chapter 44: Monitoring Redundant SFMs
For M160 routers:
user@host> show chassis sfm
Temp CPU Utilization (%) Memory Utilization (%)
Slot State (C) Total Interrupt DRAM (MB) Heap Buffer
0 Online 41 3 0 64 17 46
1 Online 44 3 0 64 17 46
2 Online 44 3 0 64 17 46
3 Present 0 0 0 0 0 0
Packet scheduling mode: Disabled
What It Means The sample output confirms that the SFM online command has been initiated and
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
Purpose You can switch SFM mastership on M40e routers only. By default, the SFM in slot 0
(
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.
Action To switch SFM mastership, use the following CLI command:
user@host> request chassis sfm master switch <no-confirm>
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
Action To replace an SFM, follow these steps:
1. Have ready an antistatic mat for the SFM.
2. Attach an electrostatic discharge (ESD) wrist strap to your bare wrist, and
connect the wrist strap to one of the two ESD points on the chassis.
3. Remove the router rear component cover by loosening the screws on the
corners of the cover and pulling it straight out from the chassis.
4. Press the offline button on the SFM faceplate and hold it down until the red
FAIL
LED lights (about 5 seconds).

Juniper JUNOS - NETWORK OPERATION GUIDE REV1 Specifications

General

Brand	Juniper
Model	JUNOS - NETWORK OPERATION GUIDE REV1
Category	Software
Language	English