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Cisco ASR 901 Aggregation Services Router Command Reference Guide
OL-26031-07
Chapter 1 CLI Command Reference
rep segment
rep segment
Use the rep segment interface configuration command to enable Resilient Ethernet Protocol (REP) on
the interface and to assign a segment ID to it. Use the no form of this command to disable REP on the
interface.
rep segment segment-id [edge [no-neighbor] [primary]] [preferred]
no rep segment
Syntax Description
Defaults REP is disabled on the interface.
When REP is enabled on an interface, the default is for the port to be a regular segment port.
Command Modes Interface configuration
Command History
Usage Guidelines REP ports must be Layer 2 trunk ports.
A non-ES REP port can be either an IEEE 802.1Q trunk port or an ISL trunk port.
segment-id Assign a segment ID to the interface. The range is from 1 to 1024.
edge (Optional) Identify the interface as one of the two REP edge ports. Entering the edge
keyword without the primary keyword configures the port as the secondary edge
port. Each segment has only two edge ports.
Note You must configure two edge ports, including one primary edge port for each
segment.
no-neighbor (Optional) Enter no-neighbor to configure a port with no external REP neighbors as
an edge port. The port inherits all properties of edge ports, and you can configure
them the same as any edge port.
primary (Optional) On an edge port, specify that the port is the primary edge port. A segment
has only one primary edge port. If you configure two ports in a segment as the
primary edge port, for example ports on different switches, the REP selects one of
them to serve as the segment primary edge port. You can identify the primary edge
port for a segment by entering the show rep topology privileged EXEC command.
preferred (Optional) Specify that the port is the preferred alternate port or the preferred port
for VLAN load balancing.
Note Configuring a port as preferred does not guarantee that it becomes the
alternate port; it merely gives it a slight edge among equal contenders. The
alternate port is usually a previously failed port.
Release Modification
15.1(2)SNG Support for this command was introduced on the Cisco ASR 901 router.
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