Couple of caveats, if the L2 headers get stripped out the script will attempt to compensate and generate a temporary L2 header for the packet based on the type of traffic. If this happens then the script supports IPv4, IPv6 and MPLS.
Tuesday, 29 March 2011
JunOS "monitor traffic" to PCAP
I knocked up the following script to convert a JunOS "monitor traffic interface ..." output into a pcap file. You can generate a pcap directly from the shell on the Juniper but this was a quick and easy method our support and implementation guys could use.
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