Cisco SCE2020-4XGBE-SM - Enabling and Disabling Link Failure Reflection; How to Enable Link Failure Reflection; How to Disable Link Failure Reflection; Enabling and Disabling Link Failure Reflection on All Ports

7-12
Cisco SCE 2000 and SCE 1000 Software Configuration Guide
OL-7827-12
Chapter 7 Configuring the Connection
Enabling and Disabling Link Failure Reflection
Enabling and Disabling Link Failure Reflection
• How to Enable Link Failure Reflection, page 7-12
• How to Disable Link Failure Reflection, page 7-12
• Enabling and Disabling Link Failure Reflection on All Ports, page 7-12
• Configuring Link Failure Reflection in Linecard-Aware Mode (SCE 2000 only), page 7-13
In some topologies, link failure on one port must be reflected to the related port to allow the higher layer
redundancy protocol in the network to detect the failure and function correctly.
The link failure-reflection command determines the behavior of the system when there is a link
problem. The link failure-reflection command enables reflection of a link failure. Use the [no] form of
this command to disable failure reflection on the link.
The default value is disabled.
How to Enable Link Failure Reflection
Step 1 From the SCE(config if)# prompt, type link failure-reflection and press Enter.
Enables link failure-reflection.
How to Disable Link Failure Reflection
Step 1 From the SCE(config if)# prompt, type no link failure-reflection and press Enter.
Disables link failure-reflection.
Enabling and Disabling Link Failure Reflection on All Ports
• Options, page 7-13
• How to Enable Link Failure Reflection on All Ports, page 7-13
• How to Disable Link Failure Reflection on All Ports, page 7-13
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.
Note The link reflection on all ports feature cannot be used in a cascade mode, because in this mode one of
the links is used to provide redundancy.