Cisco Proprietary Protocol and Snort

[Jutichai Thongkrachai <thsecmaniac () gmail com>]

Hello,

My Snort keep telling me that it detect "snort_decoder: WARNING:
BAD-TRAFFIC Bad IP protocol" (Sid:450,Gid:116) hourly which come from my
Cisco Switch send Multicast Packet to the Network with its proprietary PIM
protocol (sparse-dense-mode).

I'm curious that my Snort cannot decode Cisco PIM Protocol. So,it detect as
"WARNING: BAD-TRAFFIC Bad IP protocol" Is it possible?

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