Understand M40E Router Redundant Sfm Operation; Understand M160 Router Redundant Sfm Operation; Display Redundant Sfm Hardware Information - Juniper M Series Monitoring And Troubleshooting Manual
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- Configuration manual (35 pages)
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Understand M40e Router Redundant SFM Operation
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Understand M160 Router Redundant SFM Operation
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Display Redundant SFM Hardware Information
Purpose
Action
Sample Output
Copyright © 2012, Juniper Networks, Inc.
Monitoring Redundant SFMs on page 683
One or two SFMs can be installed into the midplane from the rear of the M40e router
chassis, as shown in
"Redundant SFMs Overview" on page
a time, with the optional second SFM in standby mode. Removing the standby SFM has
no effect on router function. If the active SFM fails or is removed from the chassis, what
happens depends on the number of SFMs installed:
If there is only one SFM, forwarding halts until the SFM is replaced and online.
If there are two SFMs, forwarding halts until the standby SFM boots and becomes
active.
It takes approximately 1 minute for the new SFM to become active. Synchronizing router
configuration information can take additional time, depending on the complexity of the
configuration.
Monitoring Redundant SFMs on page 683
Up to four SFMs can be installed into the midplane from the rear of the M160 router
chassis, as shown in
"Redundant SFMs Overview" on page
same time. A failure or taking an SFM offline has no effect on router function unless it is
the only SFM installed. If only one SFM is installed, forwarding halts until the SFM is
replaced and is back online. If two or more SFMs are installed, forwarding continues
uninterrupted.
Monitoring Redundant SFMs on page 683
To obtain information about the redundant SFM hardware.
To display redundant SFM hardware information, use the following command:
user@host> show chassis hardware
For M40e routers:
user@host> show chassis hardware
Hardware inventory:
Item
Version
Chassis
[...Output truncated...]
SFM 0 SPP
REV 07
Chapter 36: Monitoring Redundant SFMs
Part number
Serial number
710-001228
AF2247
685. Only one SFM is active at
685. All SFMs are active at the
Description
M40e
687
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