> Nilesh is right I think , in juniper you specify only payload size ,
> in cisco you specify full frame size (ip header+icmp header+Payload)
If you specify the MTU on the physical interface it definitely
includes L2 overhead. For example, this is a GigE link with 4470
IP MTU:
ge-0/2/0 {
mtu 4484;
unit 0 {
family inet {
address a.b.c.d/30;
}
family iso;
family mpls;
}
}
And "show interfaces" shows the IP etc MTU. Extract:
[email protected]> show interfaces ge-0/2/0
Physical interface: ge-0/2/0, Enabled, Physical link is Up
Logical interface ge-0/2/0.0 (Index 77) (SNMP ifIndex 300)
Protocol inet, MTU: 4470
Protocol iso, MTU: 4467
Protocol inet6, MTU: 4470
Protocol mpls, MTU: 4458
Steinar Haug, Nethelp consulting, [email protected]
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