[c-nsp] Giants and mtu-size

Arne Larsen / Region Nordjylland arla at rn.dk
Fri Oct 31 02:42:15 EDT 2008


Hi Folks.

Could someone give a hint at what I need to look at.
I've got several tag-switching interfaces that got giant in the counters.
We are using jumbo ( mtu 9216 ) frames on Gigabit Ethernet interfaces and the mtu for mpls ip is 1546. Negotiation is off on all interfaces.
I know that giants is packets that are discarded because they exceed the medium's maximum packet size. But how can I verify the right mtu size.

/Arne


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