Cisco BPX 8620 Installation And Configuration Manual page 284

Configuring Trunks
The following are the parameters that you can change without first deleting the trunk:
• Restrict Control Card traffic ("PCC restrict")
Pass sync
•
Loop clock
•
Statistical reserve
•
Idle Code (reconfigurable for trunk and line)
•
Cable type/length
•
Virtual trunk type
•
• Link type
HCS Masking
•
Payload Scrambling
•
Frame Scrambling
•
Traffic classes
•
Recv Impedance
•
Cost of Trunk
•
Deroute Delay Time
•
• Incremental CDV
Trunk Receive Rate—On IGX platforms, configurable after a trunk has been added.
•
• Trunk Transmit Rate—On BPX platforms, configurable after a trunk has been added.
F4 AIS Detection—This parameter modifies the value on one end of the trunk but does not
•
automatically modify the value on the other end of the trunk.
For the cnftrk parameter definitions, refer to the Cisco WAN Switching Command Reference, Release
9.3.30.
To change the applicable parameters without deleting the trunk, use the following procedure.
Step 1 Execute the cnftrk command at both ends of the trunk to reconfigure parameters.
Step 2 Execute the addtrk command at only one end of the trunk to add the trunk.
Switch software triggers a reroute of connections only if a change to a parameter results in too few
resources to support the current load of connections.
If you attempt to change one of the trunk parameters, the other endpoint is updated by switch software.
It is not necessary to change both endpoints' parameters.
The following are the parameters that cannot be changed after adding a trunk by using the addtrk
command:
Virtual trunk type
•
Link type
•
HCS Masking
•
Payload Scrambling
•
Cisco BPX 8600 Series Installation and Configuration
18-4
Chapter 18 Configuring Trunks and Adding Interface Shelves
Release 9.3.30, Part Number 78-12907-01 Rev. E0, May 2005