Cisco IE-3000-8TC Software Configuration Manual page 443

Chapter 21 Configuring Resilient Ethernet Protocol
Command
Step 6
rep block port {id port-id | neighbor_offset |
preferred} vlan {vlan-list | all}
Step 7 rep preempt delay seconds
Step 8
rep lsl-age-timer value
Step 9 end
Step 10
show interface [interface-id] rep [detail]
Step 11 copy running-config startup config
Enter the no form of each command to return to the default configuration. Enter the show rep topology
privileged EXEC command to see which port in the segment is the primary edge port.
This example shows how to configure an interface as the primary edge port for segment 1, to send STCNs
to segments 2 through 5, and to configure the alternate port as the port with port ID 0009001818D68700
to block all VLANs after a preemption delay of 60 seconds after a segment port failure and recovery.
The interface is configured to remain up for 6000 milliseconds without receiving a hello from a neighbor.
Switch# configure terminal
Switch (conf)# interface gigabitethernet1/1
Switch (conf-if)# rep segment 1 edge primary
OL-13018-03
Purpose
(Optional) Configure VLAN load balancing on the primary edge
port, identify the REP alternate port in one of three ways, and
configure the VLANs to be blocked on the alternate port.
Enter the id port-id to identify the alternate port by port ID. The
•
port ID is automatically generated for each port in the segment.
You can view interface port IDs by entering the show interface
interface-id rep [detail] privileged EXEC command.
Enter a neighbor_offset number to identify the alternate port as
•
a downstream neighbor from an edge port. The range is from
–256 to 256, with negative numbers indicating the downstream
neighbor from the secondary edge port. A value of 0 is invalid.
Enter -1 to identify the secondary edge port as the alternate port.
See Figure 21-4 on page 21-5
numbering.
Because you enter this command at the primary edge port
Note
(offset number 1), you would never enter an offset value of 1
to identify an alternate port.
Enter preferred to select the regular segment port previously
•
identified as the preferred alternate port for VLAN load
balancing.
• Enter vlan vlan-list to block one VLAN or a range of VLANs.
• Enter vlan all to block all VLANs.
Note Enter this command only on the REP primary edge port.
(Optional) You must enter this command and configure a preempt
time delay if you want VLAN load balancing to automatically trigger
after a link failure and recovery. The time delay range is 15 to 300
seconds. The default is manual preemption with no time delay.
Enter this command only on the REP primary edge port.
Note
(Optional) Configure a time (in milliseconds) for which the REP
interface remains up without receiving a hello from a neighbor. The
range is from 3000 to 10000 ms in 500 ms increments; the default is
5000 ms (5 seconds).
Return to privileged EXEC mode.
Verify the REP interface configuration.
(Optional) Save your entries in the switch startup configuration file.
Cisco IE 3000 Switch Software Configuration Guide
Configuring REP
for an example of neighbor offset
21-11