Allied Telesis AR44xS series manual Module Level, MLD Snooping, Pim

Features in 276-04 11

CR Module Level Description

AR44xS/ AR450S

AR7x5

AR750S

Rapier i

AT-8800

AT-8600

AT-8700XL

AT-8948

AT-9900

AT-9800

CR00011490	MLD,	2	The following issues occurred:
	MLD Snooping		■ an MLDv2 Report message parsing issue meant that sometimes the router or
			switch recognised only the first multicast group address in the message.
			■ if the robustness, qinterval or qrinterval were changed, groups’ initial
			timeout period was sometimes set to 260 instead of being calculated by using
			the following formula from RFC 3810:
			robustness * qinterval + qrinterval
			■ the Other Querier Timeout—the timeout period for registration of the “All
			Router” group—was not calculated by using the following formula from
			RFC 3810:
			robustness * qinterval + qrinterval/2
			■ When robustness, qinterval or qrinterval were set to non-default values,
			the timeout values (or MA timers) of newly reported multicast address groups
			were not updated to reflect these changed values.
			■ MLD & MLD Snooping groups were sometimes incorrectly set with a timer
			value that was inconsistent with the internally maintained individual port
			timers. Therefore, registered groups could lose port members temporarily.
			These issues have been resolved. This CR also included enhancements to MLD
			and MLD Snooping; see “Enhancements to MLD and MLD Snooping
			(CR00011490)” on page 65.
CR00011638	PIM 6	2	Occasionally, PIM6 Sparse Mode did not elect the router or switch as the BSR
			when no other PIM neighbour was present.
			This issue has been resolved. When no other BSR candidates are present, the
			router or switch correctly becomes the BSR.

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Version 276-05

C613-10474-00 REV D