Member # 32102
posted May 24, 2012 11:29 AM
This terminology has me completely flummoxed. Going through the Cisco CoPPr documentation, they say and I quote -
"Control-plane transit subinterface— Subinterface that receives all control-plane IP traffic that is software switched by the route processor. This means packets not directly destined to the router itself but rather traffic traversing through the router. Non-terminating tunnels handled by the router is an example of this type of control-plane traffic. Control-plane Protection allows specific aggregate policing of all traffic received at this subinterface."
My understanding of this interface hitherto was anything that is PUNTED to the Routing Engine because of, say, lack of a CEF adjacency and need for an ARP request.
The thing that gets me is "non-terminating" tunnels. As far as my pea brain can understand, any non-terminating tunnel, ESP, GRE, IPinIP, etc. would still be completely CEF switched by the router.
What gives? Am I not understanding something here?
Any and all inputs appreciated.
Posts: 73 | From: US | Registered: Mar 2012
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