Specifications

Features in 291-15 31
Version 291-18
C613-10488-00 REV Q
Enhancements
CR Module Level Description
AR44x / AR450 AR7x5 AR750S / AR770S Rapier i Rapier w AT-8800 AT-8600 AT-8700XL AT-8948 / x900-48 AT-9900 AT-9800
CR00018895 SSH - Secure Shell (SSH) no longer requires a feature licence. SSH server and client
functionality now works when no feature licence is present.
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CR00020566
CR00021186
EPSR - This software version includes support for EPSR+ with enhanced multiple
link recovery. This enhancement enables an EPSR ring to recover from
simultaneous failure of multiple links or units, no matter where in the ring
these failures occur.
With enhanced recovery, if a ring has multiple points of failure, and then
one point recovers, the recovered point will start processing traffic even if
other points are still down. This keeps as much of the ring available as
possible.
To enable enhanced recovery, use one of the commands:
create epsr=<id> enhance=on
set epsr=<id> enhance=on
Note that you must enable enhanced recovery on the master node and
every transit node within the EPSR domain.
Enhanced recovery is disabled by default, to allow interoperation with other
implementations that are based on RFC 3619.
To disable enhanced recovery, use one of the commands:
create epsr=<id> enhance=off
set epsr=<id> enhance=off
To see whether it is enabled or disabled, use the command:
show epsr
and check the “Enhanced Recovery” field.
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