Allied Telesis RAPIER I Change of Debug Command Syntax, Ethernet Protection Switching Ring Epsr

32 Switching Enhancements Release Note

Change of Debug Command Syntax

This Software Version includes a change in syntax for the enable switch debug and disable switch debug commands. To enable or disable debugging on the switch chip operations, you now use the dev option. Previously, this type of debugging was enabled or disabled using the m6 parameter. There is no change in the style or type of debugging information displayed.

To enable debugging of the switch chip operations, use the command:

enable switch debug=dev [other options]

To disable debugging of the switch chip operations, use the command:

disable switch debug=dev

Command Changes

The following table summarises the modified commands:

CommandChange

disable switch debug New dev option in debug parameter.

enable switch debug New dev option in debug parameter.

show switch debug New DEV option in output.

Enhanced Static Switch Filtering on Ports within a

Trunk Group

This Software Version ensures that traffic flow is not interrupted when a port within a trunk group goes link-down.

In previous Software Versions, when a port that is part of a trunk group goes link-down, the router or switch drops any traffic that is forwarded by a static switch filter out of that port.

In this Software Version, when a port that is part of a trunk group goes link-down, the router or switch modifies any static switch filters defined to forward traffic out of that port. It modifies the egress port for the switch filter entry to a port which is link-up within the trunk group. This ensures that traffic can flow without interruption despite the original port going link-down.

Command Changes

This expansion does not affect any commands.

Ethernet Protection Switching Ring (EPSR)

EPSR is a protection system employed to prevent loops and provide high resiliency within Ethernet ring based topologies. It offers:

■A rapid detection and recovery time (in the order of 50 ms, depending on configuration) if a link or node fails.

■A faster and more effective alternative to spanning tree based options when creating resilient ring networks.

Information about EPSR and its commands is shown in the EPSR chapter.

Software Version 2.8.1 C613-10477-00 REV B