Specifications

Features in 291-12 48
Version 291-18
C613-10488-00 REV Q
CR00019989 Switching - A new command has been added to modify the operation of the switch
when a packet uses the default hardware multicast route. This usually
happens when the switch receives new unregistered multicast traffic. The
command syntax is:
SET SWItch DEFAultmrouteoperation={TRap|ROUte|DEFault}
The defaultmrouteoperation parameter specifies the operation to
perform on the first packet received for a multicast stream. If you specify
trap or default, the packet is copied to the CPU for processing, and is also
flooded to other ports in the VLAN. Under some circumstances, especially
when an L3 multicast routing protocol such as PIM is configured, the packet
may not be flooded correctly to other ports on the receiving upstream
VLAN. If you specify route, the packet is copied to the CPU and also routed
on the receiving upstream VLAN. In some circumstances this may change
the packet’s VLAN tag. The default is trap.
Important: Setting this command to route changes the default behaviour
of the switch hardware, may change the VLAN tag, and may cause issues
in private VLAN configurations. We recommend that you only change this
setting if clients on the receiving VLAN are not receiving the first packet of
a new multicast stream and this is affecting the multicast service.
To see the current setting, use the command show switch and check the
entry called “Def. Multicast Route Op”.
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CR00020024 Bridging - In Software Version 291-11, CR00019152 increased the maximum number
of bridge ports supported, but with the trade-off of reduced bridging
performance for small packets. This CR completes the enhancement by
restoring bridging performance to its earlier level.
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CR00020146 IP gateway - The upper limit on the number of entries in an IP filter has been increased
from 255 to 3072.
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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