On 7/2/07, Vincent De Keyzer <[EMAIL PROTECTED]> wrote: > > How do I change the MTU to fix it? The frame circuit is in a Telco's > > area I don't normally work in. > > Well, you don't really have to change the MTU - you'd rather ask the telco > why you can't ping with large packets. > > Normally you should get something like this: > > Router#ping 172.20.2.14 size 1500 df-bit
Vincent, This would be necessary if you have the PMTUD enabled. Last time I tried, the PMTUD was disabled by default, hence the MSS used was 536, if my memory serves me well. Scott, You can check if it is enabled by doing "sh run | inc path-mtu". Although I'd first configure the "terminal length 3" (or similar tiny number, YMMV) - this will cause the telnet traffic to come in very small segments - so then for the starters you should be able to slowly page through the entire config, and see what is done there and for what reasons, before doing any rough movements :-) if the tiny pager trick works, then you could do some further diagnostics via the logging buffered. cheers, andrew _______________________________________________ cisco-nsp mailing list cisco-nsp@puck.nether.net https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/