Nortel 5000 Series Release Notes page 35

Change Request
Number
Q01738603
Q01738540
Q01653932
Q01452496
Q01370981
Q01446613
Q01252555
Copyright © 2008., Nortel Networks
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Description
In the preceding figure, 86xx has two routes to reach PC2. The first route is
to 55xx-a and then 55xx-c. The second route is to 55xx-b and then 55xx-c. If
8600 uses second route, the traffic from PC1 will never reach PC2.
To force the 86xx to take the first route, you must configure VRRP with
Backup/Master enabled on both SMLT switches.
Then static route with the best cost to the VRRP must be added to 86xx to
make sure 86xx always chooses 55xx-a as the next hop to reach PC2.
If you use the non-EAP phone feature in Layer 3 mode with DHCP Relay, it
may disrupt Layer 3 connectivity. Nortel recommends that you deploy this
feature only in Layer 2 mode.
A hardware limitation means that once you program the filter, it blocks all IPs
that are not allowed. The switch does not show which IP was dropped.
When you enable IPSG on a list of ports, it is enabled one port at a time. In
addition, IPSG will try to setup IP filters with binding entries currently defined
for the port. In the case of a trunk, DHCP binding entries are defined only for
the first member of the trunk.
Workaround: Once you enable IPSG on all trunk ports, administratively
disabled and enabled all trunk ports to force DHCP Snooping and IPSG to
update all IP entries to all trunk ports.
Do not administratively disable port mirrored ports in MSTP mode.
Dynamic passive devices that redo DHCP may be displayed as a PC.
The total number of allowed EAP and non-EAP MACs must not exceed 32.
You can login after SNAS receives all port info from the switch.
Nortel Ethernet Routing Switch 5000 Series
Release Notes — Release 6.0
NN47200-400 04.01 Standard
6.0 12 December 2008
Known issues 35