Avaya ERS 8600 Manual page 37

MLT / SMLT

Connectivity to NLB servers single homed to one ERS8600 in an IST pair will now function properly for SMLT
connected devices when using an nlb-mode of unicast or with arp multicast-mac-flooding enabled.
Configurations using nlb-mode of multicast were not affected. (Q02037778-01)

When the lowest member port of an SMLT is in an operationally down state during SMLT recovery, ARP
records would previously be programmed incorrectly during the database synchronization and cause
connectivity failures until the SMLT port was recovered. ARP records are now properly programmed for this
scenario. (Q02124545)

SLPP will now disable the correct SMLT port when a loop is detected on an SMLT link where the smlt-id
configured is not the same as the mlt-id value configured. (Q02089994)

On ERS8600, FDB and ARP entries will point correctly to SMLT after IST peer reboots. Previously entries
learnt on SMLT ports could very occasionally point incorrectly to the IST. (Q02091486)
RSMLT

With ICMP redirect enabled on RSMLT peer switches, packets destined to the RSMLT-peer's MAC address
will now be forwarded correctly and not dropped as ICMP-redirect packets. (Q02091034)

In RSMLT environments, ERS8600 will no longer add the RSMLT-peer's MAC address to its Router MAC
table. This will result in packets destined to the IP interface of RSMLT-peer to forward properly. (Q02091350)
SLPP

Previously SLPP would fail to detect a loop if the port uptime was between 24.8 and 49.7 days. After 49.7
days, and then again at 24.8 days, the same situation would repeat - the faulty state would cycle between
working to non-working, back to working, etc. based upon the days time period. This is now resolved. A work-
around to this situation previously is either a switch reset/re-boot, or port disable/enable prior to 24.8 days of
operation. (Q02113609)

For non-routed VLANs, SLPP will now use a source MAC address equal to the Base Mac Address of the
ERS8600 plus the ID of the VLAN. This will ensure that received SLPP packets are processed against the
correct non-routed VLAN when a loop is present in the network and avoid erroneous warning messages.
(Q02081719)
VLACP

ERS 8600 will now always bring down a port via VLACP within the configured timeout value when its VLACP
peer goes down. Previously one end of the link would take an extra timeout cycle before downing the port in
some scenarios. (Q02088710)

In scenarios where a port was taken down by VLACP and then the far end switch is rebooted or VLACP
recovered to recover the port, Persistent VLACP port flapping will no longer occur. (Q02088709)

On E-mode enabled switches in full mesh SMLT topologies, protocol traffic will now flow properly on the
second MLT link when the first MLT link is disabled. (Q02089615)
VRRP
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