3Com 3C16630A User Manual page 69

Main Unit ID:
Main Port ID:
Media Type:
Link State:
Standby Unit ID:
Standby Port ID:
Media Type:
Link State:
Pair State : Operational
Active Port :
Pair Enable :
Figure 3-23 Port Resilience Screen
Rules for setting up resilient links
A resilient pair cannot be set up through the VT100 screens if one or
either of the ports is a secure port.
You can set up a resilient link pair to use ports on the same unit, or on
different units in the stack to prevent the loss of both links should a
single unit fail. This applies to fiber and twisted pair transceiver module
ports, but NOT to AUI ports with external transceivers fitted.
The resilient link pair can be set up only on fiber or twisted pair media
types, although the main and standby links can be both media types.
The standby port must be configured so that it is Disabled on Boot.
This ensures that a loop will not be created when the unit boots up.
This means that a standby port can be configured only on a Hub 10 or
an FMS II unit, and that the Disable on Boot switch (see
page 2-3) on the unit must be set to 'Disable'. Refer to the unit's user
manual for instructions on how to set the switch.
The resilient link pair must only be defined at one end of the link.
A resilient link pair can only be set up if neither of the ports already
form part of another resilient link.
DUA1663-0BAA03
3Com SuperStack II Port Resilience
1
5
Fiber
Available
[3
[4
Twisted Pair
Available
Main
Enable
APPLY
Standby Links Available
Unit ID
]
]
DELETE CANCEL
Repeater Management
Port ID
2
3
2
2
2
3
3
3
4
4
4
Figure 2-1
3-41
1
1
2
3
4
4
5
12
2
3
10
on