Specifications

Clarifications and Known Behaviors
ExtremeWare 7.1.1 Release Notes 33
Cross module trunking is not supported on WDMi modules (PD2-176314520).
Cross-Module Trunking and Hitless Failover
For traffic load-shared across I/O modules, failover is not hitless; traffic loss occurs for approximately
four seconds (PD2-186133901).
Master Slot Must Be Active for CMT
The slot with the master load-sharing port must be populated and active when you configure a
cross-module load-sharing group. If the master slot is unavailable at configuration, cross-module
load-sharing traffic is not forwarded (PD2-175825901, PD2-175854401).
MSM-3 Log Might Be Out of Chronological Order
Log events are stored independently on the master and slave MSM-3. Thus, a failover might cause the
log to appear out of chronological order, or missing information. Concatenating the logs provides all log
information (PD2-172852704).
Source Addresses Might Age Out of FDB
If a MAC source address is exclusively sourced on a slave CMT slot, such as with a port-based
algorithm, the FDB entry might be aged out. To avoid this, use address-based load sharing on the
neighbor switch (PD2-170942776).
Do Not Use Static FDB Entries with CMT
Do not use static FDB entries with CMT. If the CMT master fails, static FDB entries are not transferred
to the group members (PD2-170942732, PD2-170942701).
G16X
3
Yes
G24T
3
Yes
F32Fi Yes
F48Ti Yes
F96Ti Yes
WDMi No
10GLRi Yes
MPLS No
ARM No
P3cMi Yes
P3cSi Yes
P12cMi Yes
P12cSi Yes
A3cMi Yes
A3cSi Yes
Table 9: Cross-module trunking module support (continued)
Module CMT Support