error message on bgp

[PierrMinguy]

I try to configure BGP on ISR4431 routers, i got errors message :

Does someone can help me ?

*Jul 1 16:32:12.956: %TCP-6-BADAUTH: No MD5 digest from 74.113.75.22(179) to 74.113.75.25(39809) (RST) tableid - 0
*Jul 1 16:32:36.847: %TCP-6-BADAUTH: No MD5 digest from 74.113.75.22(179) to 74.113.75.25(47285) (RST) tableid - 0
*Jul 1 16:32:38.847: %TCP-6-BADAUTH: No MD5 digest from 74.113.75.22(179) to 74.113.75.25(47285) (RST) tableid - 0
*Jul 1 16:32:42.847: %TCP-6-BADAUTH: No MD5 digest from 74.113.75.22(179) to 74.113.75.25(47285) (RST) tableid - 0
*Jul 1 16:32:50.847: %TCP-6-BADAUTH: No MD5 digest from 74.113.75.22(179) to 74.113.75.25(47285) (RST) tableid - 0
*Jul 1 16:33:14.747: %TCP-6-BADAUTH: No MD5 digest from 74.113.75.22(179) to 74.113.75.25(34445) (RST) tableid - 0
*Jul 1 16:33:16.748: %TCP-6-BADAUTH: No MD5 digest from 74.113.75.22(179) to 74.113.75.25(34445) (RST) tableid - 0

Thanks

[Vinit Jain · Accepted solution]

Hello

These errors are caused due to  wrong or missing password configured for the BGP neighbor. Could you please check if both sides of the BGP neighbor in the log has the correct password configured.

Regards

Vinit

[PierrMinguy]

I had look at both side and its the same password.....

[Vinit Jain]

If both sides have the same password and you are still getting the error log, then we can check for the following:

- show ip bgp neigh (check the MSS value at the end of the output)

- show tcp brief (get the TCB value of the BGP session)

- show tcp tcb <tcb_value from above output>

This could give us some more clarification. 

This could also be a software defect causing such erorrs but again if your session is not flapping, then you can ignore these errors.

Regards

Vinit