Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Community Member

MPLS on FE between 7600 and 7500

I have a 7500 that connects to a 7600 using a PA-FE-TX interface and I'm using MPLS. When I set the MPLS mtu on the 7600 it requires me to adjust the interface MTU (6700 series switch card) as well (from 1500 to 1524). The 7500 will allow me to send the MPLS MTU to 1524, but it says that I can't adjust the interface MTU. Is there a way around this? I've searched the forum and didn't find a definitive answer. I'd like to adjust the 7500 if possible, but if not, then I could do the 7600.

Any help or guidance is appreciated.

Thanks!

5 REPLIES
Community Member

Re: MPLS on FE between 7600 and 7500

Could you provide more background. You might want to just stick with the 6700 verses the 7500. Meaning that the problem is with the older hardware.

Community Member

Re: MPLS on FE between 7600 and 7500

i'm not in a position to remove the 7500 - it's a PE device and the 7600 is the P router. Is this the information you were looking for?

Silver

Re: MPLS on FE between 7600 and 7500

Hi

You can probably solve this by configure "mtu 1524" and ip "ip mtu 1500" on 7600, and on 7500 "mpls mtu 1524"

This is what I did under a migration from 7200/7500 to 7600

/Mike

Community Member

Re: MPLS on FE between 7600 and 7500

Mike,

thanks for the tip! - we are trying it now in our lab.

-wes

Community Member

Re: MPLS on FE between 7600 and 7500

Thanks again for the tip - it worked great and we are now running in production.

163
Views
0
Helpful
5
Replies
CreatePlease to create content