7-7
Cisco SCE8000 Software Configuration Guide, Rel 3.1.6S
OL-16479-01
Chapter 7 Configuring the Connection
Link Failure Reflection
Enabling and Disabling Link Failure Reflection on All Ports
•
•
How to Enable Link Failure Reflection on All Ports, page 7-7
•
How to Disable Link Failure Reflection on All Ports, page 7-7
The
link reflection on all ports
feature extends the link failure reflection feature. It allows the user to
determine whether all ports should be taken down if a single port link fails.
In certain topologies, when a failure state occurs on one link, the link state must be reflected to all ports
to signal any element using this SCE platform that the device is in a failure state, and therefore cannot
be used.
In
link reflection on all ports
mode, all ports of the SCE platform are forced down and the link state of
the first port is reflected on all the ports.
When recovering from the failure state, the forced down ports (the other link) are brought up only after
the first failed port (link) has recovered. In addition, the reflection algorithm will not try to reflect failure
for this link again for the next 15 seconds, to avoid link stability problems on auto-negotiation.
Options
The following options are available:
•
The
on-all-ports
keyword enables reflection of a link failure to all ports.
•
Use the
no
form of this command to disable failure reflection to all ports (the
on-all-ports
keyword
is not used in the
no
form of the command).
The default value is
disabled
.
How to Enable Link Failure Reflection on All Ports
Step 1
From the SCE(config if)# prompt, type
link failure-reflection on-all-ports
and press
Enter
.
Enables failure reflection to all ports.
How to Disable Link Failure Reflection on All Ports
Step 1
From the SCE(config if)# prompt, type
no link failure-reflection
and press
Enter
.
Disables failure reflection to all ports.
