Routing

Hello Experts

Can any one tell me when we need to give the "size" in "monitor traffic interface" command

Thanks 

Hello,

You can skip the "size" option if You are not interested in packet payload, only in IP/TCP/UDP header.

Otherwise - always specify "size" option _UNLESS_ all of Your interesting packets fit into default capture size 96 bytes, see below

aarseniev@mx480> monitor traffic interface fxp0 no-resolve 
verbose output suppressed, use <detail> or <extensive> for full protocol decode
Address resolution is OFF.
Listening on fxp0, capture size 96 bytes

HTH

Thanks

Alex

Hi Alex

Thanks for the reply. Could you please mention any example you know if header size is greater than 96 bytes?

Thanks 

Hello,

IPv6 is one example - with extension headers, the IPv6 header can grow beyond 96 bytes.

HTH

Thanks

Alex