gre/ipsec fragment

vaba · ‎02-09-2008

i have configure gre/ipsec, and i want to see if my router fragment.

My config on tunnel interface is:

interface Tunnel2

ip address 192.168.y.y 255.255.255.0

no ip proxy-arp

ip mtu 1476

ip virtual-reassembly

ip tcp adjust-mss 1400

tunnel source FastEthernet1

tunnel destination x.x.x.x

I use ip mtu 1476, and ip tcp adjust-mss 1400, i want to use any show command on IOS, but i don't no which

didyap · ‎02-15-2008

There is no command to show the fragmentation status on the router. You can use the interface counters using "sh interface" command to check the dropped packets status. Following link may help you for MSS and MTU related issues

http://www.cisco.com/en/US/tech/tk827/tk369/technologies_white_paper09186a00800d6979.shtml

carl_j_meza · ‎02-16-2008

Try 'show ip traffic'