*Jan 19 01:36:50.859: %BGP-4-BGP_LABELS_NOT_SUPPORTED: BGP neighbor 2001:DB8:100::171 does not support sending labels

[Marc du]

Hello

How can i solve the below error

*Jan 19 01:36:50.859: %BGP-4-BGP_LABELS_NOT_SUPPORTED: BGP neighbor 2001:DB8:100::171 does not support sending labels

thanks all

[Georg Pauwen]

Hello,

without having seen your configuration, check if the below applies:

Cisco IOS Release 15.0(1)S3a

The following behavior changes are introduced in Cisco IOS Release 15.0(1)S3a:

There is a new BGP error message.
Old Behavior: No error message is generated when BGP neighbors are configured with both an IPv6 address and MPLS send labels (via the neighbor send-label command or via a template). Sending MPLS labels to IPv6 peers is not supported.
New Behavior: An error message is generated when BGP neighbors are configured with both an IPv6 address and MPLS send labels. An example of the error message is as follows:
%BGP-4-BGP_LABELS_NOT_SUPPORTED: BGP neighbor 2001:DB8:1::2 does not support sending labels

[Marc du]

Hi

yes its  ios version 15

what can i do to solve ,

[Georg Pauwen]

Hello,

the solution would be to remove the 'neighbor IPv6-address send-label' command, provided you have that configured. If you do not have the command explicitly configured, it could be applied through a template. What is the output of 'show sdm prefer' ?

[Marc du]

I need to let 6PE working

[Georg Pauwen]

Hello,

to avoid confusion, can you post the configuration of your router ?

[Marc du]

if having multiple topology for ipv4/ipv6 , how can i send label to ipv6 neighbor ( 128 bit format) while i m getting the below errors

*Jan 19 01:36:50.859: %BGP-4-BGP_LABELS_NOT_SUPPORTED: BGP neighbor 2001:DB8:100::171 does not support sending labels

thanks

[Georg Pauwen]

Hello,

check the BGP neighbor f label advertising has been enabled:

show ip bgp neighbors

Check for this line:

ipv4 MPLS Label capability: advertised