pMTU discovery relies on ICMP messages which can be filtered somewhere during the path, so this is not the best option. It is much better to set the MTU to 1400 manually. The 1400 is recommended by Cisco to make a room for encapsulation.
Regards, Piotr 2011/1/5 kamran shakil <[email protected]> > Again hello everyone, > > In DMVPN , while configuring tunnel interfaces, instead of using mtu of > 1400 , if i give the command path mtu-discovery ? would it be fine ? since i > saw a real network configured on dmvpn with this command under tunnel > interface " path mtu discovery" ~ > > > good day ~ > > kamran. > > > _______________________________________________ > For more information regarding industry leading CCIE Lab training, please > visit www.ipexpert.com > >
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