Troubleshooting Layer 2 Load Balancing Example; Verifying The Bundle Status - Cisco CRS-1 - Carrier Routing System Router Troubleshooting Manual

Configuration Examples for Troubleshooting Load Balancing

Troubleshooting Layer 2 Load Balancing Example

Table 13-2
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.
Table 13-2
Router A
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

Verifying the Bundle Status

The configuration in
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.
Bundle-Ether12
Bandwidth (Kbps)
Effective
----------
Port
------------
Gi0/6/5/5
Gi0/6/5/6
Gi0/6/5/7
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.
Cisco IOS XR Troubleshooting Guide for the Cisco CRS-1 Router
13-246
shows the sample configuration that this section uses to describe the troubleshooting process
Sample Configuration for Layer 2 Load Balancing
Table 13-2
2 - Port is Attached. 3 - Port is Collecting.
4 - Port is Distributing.
Available MAC address
---------- --------------
3000000 3000000 0015.6358.b902
State Port ID
----- --------------
4 0x8000, 0x0005
4 0x8000, 0x0006
4 0x8000, 0x0007
Router B
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
shows that a bundle is configured. Enter the show bundle command to
Min active
Links
-----
1
B/W (Kbps)
----------
1000000
1000000
1000000
Chapter 13 Troubleshooting Load Balancing
Max active
B/W (Kbps) Links
---------- -----
1 32
MAC address
---------------
0015.6358.be38
0015.6358.be39
0015.6358.be3a
OL-21483-02