Cisco Catalyst SD-WAN Troubleshooting Guide

Verify backward-compatible IP as disabled for site-to-site speed test

Updated: September 28, 2026

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Describes the verification needed for site-to-site speed test..

Procedure

To verify that the backward compatible IP has been disabled for site-to-site speed test, use the show running-config interface Loopback65529 command.

Example:

The following example shows the configuration before backward compatible ip is disabled:

vm5# show running-config interface Loopback65529
interface Loopback65529
 vrf forwarding 65529
 ip address 11.1.85.85 255.255.255.255 secondary
 ip address 10.1.85.85 255.255.255.255

The following example shows that only the 10.1.x.x IP address is configured at the loopback interface, implying the compatible IP has been disabled.

vm5# show running-config interface Loopback65529
interface Loopback65529
 vrf forwarding 65529
 ip address 10.1.85.85 255.255.255.255

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