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Cisco IE 3000 Switch Software Configuration Guide
OL-13018-03
Chapter 21 Configuring Resilient Ethernet Protocol
Configuring REP
•
REP sends all LSL PDUs in untagged frames on the native VLAN. The BPA message sent to the
Cisco multicast address is sent on the administration VLAN, which is VLAN 1 by default.
•
You can configure how long a REP interface remains up without receiving a hello from a neighbor.
You can use the
rep lsl-age-time
r
value
interface configuration command to set the time from 3000
ms to 10000 ms. The LSL hello timer is then set to the age-timer value divided by three. In normal
operation, three LSL hellos are sent before the age timer on the peer switch expires and checks for
hello messages.
•
REP ports cannot be configured as one of these port types:
–
SPAN destination port
–
Tunnel port
–
Access port
•
REP is supported on EtherChannels, but not on an individual port that belongs to an EtherChannel.
•
There is a maximum of 64 REP segments per switch.
Configuring the REP Administrative VLAN
To avoid the delay introduced by relaying messages in software for link-failure or VLAN-blocking
notification during load balancing, REP floods packets at the hardware flood layer (HFL) to a regular
multicast address. These messages are flooded to the whole network, not just the REP segment. You can
control flooding of these messages by configuring an administrative VLAN for the whole domain.
Follow these guidelines when configuring the REP administrative VLAN:
•
If you do not configure an administrative VLAN, the default is VLAN 1.
•
There can be only one administrative VLAN on a switch and on a segment. However, this is not
enforced by software.
•
The administrative VLAN cannot be the RSPAN VLAN.
Beginning in privileged EXEC mode, follow these steps to configure the REP administrative VLAN:
This example shows how to configure the administrative VLAN as VLAN 100 and verify the
configuration by entering the
show interface rep detail
command on one of the REP interfaces:
Switch#
configure terminal
Switch (conf)#
rep admin vlan 100
Switch (conf-if)#
end
Command
Purpose
Step 1
configure terminal
Enter global configuration mode.
Step 2
rep admin vlan
vlan-id
Specify the administrative VLAN. The range is 2 to 4094.
The default is VLAN 1. To set the admin VLAN to 1,
enter the
no rep admin vlan
global configuration
command.
Step 3
end
Return to privileged EXEC mode.
Step 4
show interface
[
interface-id
]
rep detail
Verify the configuration on one of the REP interfaces.
Step 5
copy running-config startup config
(Optional) Save your entries in the switch startup
configuration file.
Содержание IE 3000
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