The MPLS-OPS Archive

[Abhishek Mittal <ask4mpls@yahoo.com>]

Hi Garry ,

 

Please check the IOS version and do the following activity if possible for you:

 

1> Check the Hardware including Flash / RAM

2> Upgrade the IOS o your PE (Cisco 7206) ( Any stable image from 12.2 and above)

3> If u are the valid cisco customer , logged your problem with Vendor/TAC

4> Use Ip Cef for MPLS on this box

5> Try to fix up MPLS stuff as per your requirements

6> Fix up the MTU size

 

And let us know the status ....

 

Thanks & Regards
Abhishek Mittal

Garry Glendown <garry@regio.net> wrote:

> Gupta, Shailendra wrote:
> > Do you also have Fast Ethernet Port on this? If yes, whether that allows 
> > change of MTU.
>
> Yes it does. No it doesn't.
>
> switch1.ffm4(config)#int fa0/1
> switch1.ffm4(config-if)#mtu 1512
> % Interface FastEthernet0/1 does not support user settable mtu.
>
> > Please search CCO & I am sure this limitation & possible resolution must 
> > be listed on the site. In Between, I also doubt that "Telenet" would 
> > pose any such MTU related issue, being small byte packet(<1500 Bytes]. 
>
> The problem occured e.g. during WWW access ... I just used telnet to 
> port 80 for some testing ...
>
> I also just noticed that the router I'm running as PE also doesn't 
> support an MTU bigger than 1500 ... though the output puzzles me a bit:
>
> active-gw(config)#int fa5/0
> active-gw(config-if)#mtu
>  ?
> <64-17944> MTU size in bytes
>
> active-gw(config-if)#mtu 1512
> % Interface FastEthernet5/0 does not support user settable mtu.
>
> This is a 7206 w/ 12.0(7)S ...
>
> If I understand the MPLS reading I did correctly, I will need to have an 
> MTU of at least 1508 or 1512 in order to allow MPLS due to label and 
> label stacking (want to do MPLS VPN) ...
>
> Any ideas?
>
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