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24 Patch Release Note
Patch 86251-05 for Software Release 2.5.1
C613-10356-00 REV F
TCP did not send a TCP Reset message under some circumstances, for
example when the Telnet server was disabled. This issue has been resolved.
If ingress filtering was supported within trunk groups, ports with ingress
filtering enabled were erroneously added to the trunk group. This issue has
been resolved.
Some change actions, and the resending of prune messages were not
operating correctly. This issue has been resolved.
The test facility was not testing switch ports. This issue has been resolved.
Availability
Patches can be downloaded from the Software Updates area of the Allied
Telesyn web site at www.alliedtelesyn.co.nz/support/updates/patches.html
. A
licence or password is not required to use a patch.
Static IGMP
This section describes an enhancement to the Internet Group Management
Protocol (IGMP), which is supplied as a patch on Software Releases 2.5.1 for
Rapier i Series switches.
It is possible to have a network segment that either has no multicast group
members, or has a host that is unable to report its group membership with
IGMP. In such cases, no multicast traffic is sent to the network segment. This
enhancement provides a mechanism for the user to pull down multicast traffic
to the segment.
Currently the switch forwards multicast data on a dynamic basis to hosts who
have joined the multicast group. This enhancement allows the user to instruct
the switch to forward multicast data over a specified interface and port, as
shown in Figure 2 on page 25. This capability is essential for sending multicast
traffic to hosts that cannot report their group membership with IGMP. It plays
an important role in video over ADSL applications.
Figure 2 on page 25 illustrates a switch forwarding the multicast stream to a
set-top box after a user specifies that group 224.1.1.1 multicast data should be
forwarded out of port 4 of VLAN1.
Unlike conventional IGMP membership, this user-specified static membership
never times out.
The user will also be able to filter some IGMP debug messages by source IP
address and group destination address.
PCR: 02527 Module: TCP Network affecting: No
PCR: 02552 Module: SWI Network affecting: No
PCR: 02574 Module: DVMRP Network affecting: No
PCR: 02581 Module: TM Network affecting: No