Cabletron Systems SmartSwitch 6000 User Manual page 14

Introduction
Active Trunk Links
The number of links participating in the trunking group.
If all the ports in the trunking group are the same speed and configured to the
same duplex mode, the equation is:
If the ports in the trunking group are different speeds, the equation is:
Multiple trunks can also be established between chassis-based switches, but only
one group of trunk ports will be active. The trunked ports do not necessarily need
to be on the same module. A Blocking state for all ports in the Group in Standby
will be reflected on the SmartTrunking Local Management screen. In some cases,
the INB backplane will block.
1-6
Path Cost x # of ports
Path Cost 1 + Path Cost 2 + Path Cost 3 + Path Cost n...
Trunking
(Active)
SmartSwitch 9000
Chassis
9H422-12
2
Blocked
The active path is determined by
the lowest combined path cost.
The higher path cost ports will be blocked.
Figure 1-3. A Redundant Standby Path for Trunking
1000
------
1000
------
SmartSwitch 9000
Chassis
9H422-12
1