Cisco CRS-1 - Carrier Routing System Router Troubleshooting Guide

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Cisco IOS XR Troubleshooting Guide for the Cisco CRS-1 Router
OL-21483-02
Chapter 13 Troubleshooting Load Balancing
Configuration Examples for Troubleshooting Load Balancing
Troubleshooting Layer 2 Load Balancing Example
Table 13-2 shows the sample configuration that this section uses to describe the troubleshooting process
for Layer 2 load balancing. Two routers, Router A and Router B, connect back to back over three serial
Gigabit Ethernet interfaces that are grouped into a bundle.
Verifying the Bundle Status
The configuration in Table 1 3-2 shows that a bundle is configured. Enter the show bundle command to
verify the configuration:
RP/0/RP0/CPU0:RouterB# show bundle bundle-ether12
Fri Oct 24 02:31:14.331 PST DST
State: 0 - Port is Detached. 1 - Port is Waiting.
2 - Port is Attached. 3 - Port is Collecting.
4 - Port is Distributing.
Bundle-Ether12
Bandwidth (Kbps) Min active Max active
Effective Available MAC address Links B/W (Kbps) Links
---------- ---------- -------------- ----- ---------- -----
3000000 3000000 0015.6358.b902 1 1 32
Port State Port ID B/W (Kbps) MAC address
------------ ----- -------------- ---------- ---------------
Gi0/6/5/5 4 0x8000, 0x0005 1000000 0015.6358.be38
Gi0/6/5/6 4 0x8000, 0x0006 1000000 0015.6358.be39
Gi0/6/5/7 4 0x8000, 0x0007 1000000 0015.6358.be3a
This verifies that the bundle is active and is using the three expected interfaces (ports). If the bundle on
your system is not active, troubleshoot that problem first. It might not have the minimum number of
active links or minimum bandwidth to come up.
Table 13-2 Sample Configuration for Layer 2 Load Balancing
Router A Router B
interface Bundle-Ether12
description Connected to Router B
ipv4 address 10.12.48.1 255.255.255.0
!
interface GigabitEthernet0/6/5/5
bundle id 12 mode active
!
interface GigabitEthernet0/6/5/6
bundle id 12 mode active
!
interface GigabitEthernet0/6/5/7 bundle id
12 mode active
!
router ospf 200
!
area 0
!
interface GigabitEthernet0/6/5/5
interface GigabitEthernet0/6/5/6
interface GigabitEthernet0/6/5/7
interface Bundle-Ether12
description Connected to Router A
ipv4 address 10.12.48.2 255.255.255.0
!
interface GigabitEthernet0/6/5/5
bundle id 12 mode active
!
interface GigabitEthernet0/6/5/6
bundle id 12 mode active
!
interface GigabitEthernet0/6/5/7
bundle id 12 mode active
!
router ospf 200
area 0
!
interface GigabitEthernet0/6/5/5
interface GigabitEthernet0/6/5/6
interface GigabitEthernet0/6/5/7

Cisco CRS-1 - Carrier Routing System Router Specifications

General

Brand	Cisco
Model	CRS-1 - Carrier Routing System Router
Category	Network Router
Language	English