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17-11
Cisco ME 3400 Ethernet Access Switch Software Configuration Guide
OL-9639-06
Chapter 17 Configuring Resilient Ethernet Protocol
Configuring REP
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 gigabitethernet0/1
Switch (conf-if)# rep segment 1 edge primary
Switch (conf-if)# rep stcn segment 2-5
Switch (conf-if)# rep block port 0009001818D68700 vlan all
Switch (conf-if)# rep preempt delay 60
Switch (conf-if)# rep lsl-age-timer 6000
Switch (conf-if)# end
This example shows how to configure the VLAN blocking configuration shown in Figure 17-4. The
alternate port is the neighbor with neighbor offset number 4. After manual preemption, VLANs 100 to
200 are blocked at this port, and all other VLANs are blocked at the primary edge port E1 (Gigabit
Ethernet port 0/1).
Switch# configure terminal
Switch (conf)# interface gigabitethernet0/1
Switch (conf-if)# rep segment 1 edge primary
Switch (conf-if)# rep block port 4 vlan 100-200
Switch (conf-if)# end
Figure 17-4 Example of VLAN Blocking
Setting Manual Preemption for VLAN Load Balancing
If you do not enter the rep preempt delay seconds interface configuration command on the primary edge
port to configure a preemption time delay, the default is to manually trigger VLAN load balancing on
the segment. Be sure that all other segment configuration has been completed before manually
preempting VLAN load balancing. When you enter the rep preempt segment segment-id command, a
confirmation message appears before the command is executed because preemption can cause network
disruption.
E2E1
4
201891
Alternate port (offset 4)
blocks VLANs 100-200
Primary edge port E1
blocks all VLANs except
VLANs 100-200