Most of the traffic travels through the router via the data plane, but a RP must handle some things, like routing updates, or network management traffic, Control Plane Policing (CPP) (or CoPP for the 6500 implementation)), is a dedicated control plane and can be configured with MQC to provide filtering and policing.
</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">Router>en</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">Router#conf ter</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">Enter configuration commands, one per line. End with CNTL/Z.</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">Router(config)#hostname R2</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config)#int f1/0</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config-if)#ip add 10.1.12.2 255.255.255.0</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config-if)#no sh</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config-if)#exit</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config)#</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config)#</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config)#do ping 10.1.12.1</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">Type escape sequence to abort.</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">Sending 5, 100-byte ICMP Echos to 10.1.12.1, timeout is 2 seconds:</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">.!!!!</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">Success rate is 80 percent (4/5), round-trip min/avg/max = 8/58/116 ms</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config)#</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config)#</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config)#</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config)#</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config)#ip access-list ex 101</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config-ext-nacl)#permit icmp any any</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config-ext-nacl)#exit</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config)#class-map ICMP</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config-cmap)#ma access-group 101</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config-cmap)#exit</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config)#policy-map TEST</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config-pmap)#class ICMP</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config-pmap-c)#drop</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config-pmap-c)#exit</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config-pmap)#control-plane</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config-cp)#?</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">Control Plane configuration commands:</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">exit Exit from control-plane configuration mode</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">no Negate or set default values of a command</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">service-policy Configure QOS Service Policy</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config-cp)#service-policy in TEST</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config-cp)#do show pol</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">*Feb 28 00:53:03.359: %CP-5-FEATURE: Control-plane Policing feature enabled on</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">ontrol plane aggregate path</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">icy-map</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config-cp)#do show policy-map</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">Policy Map TEST</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">Class ICMP</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">drop</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config-cp)#no service-policy in TEST</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config-cp)#do deb ip icmp</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">ICMP packet debugging is on</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config-cp)#</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">*Feb 28 00:53:47.287: ICMP: echo reply sent, src 10.1.12.2, dst 10.1.12.1</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">*Feb 28 00:53:47.351: ICMP: echo reply sent, src 10.1.12.2, dst 10.1.12.1</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">*Feb 28 00:53:47.403: ICMP: echo reply sent, src 10.1.12.2, dst 10.1.12.1</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">*Feb 28 00:53:47.411: ICMP: echo reply sent, src 10.1.12.2, dst 10.1.12.1</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">*Feb 28 00:53:47.419: ICMP: echo reply sent, src 10.1.12.2, dst 10.1.12.1</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config-cp)#</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config-cp)#</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config-cp)#control-plane</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config-cp)#service-policy in TEST</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config-cp)#</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config-cp)#</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config-cp)#</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">*Feb 28 00:53:56.139: %CP-5-FEATURE: Control-plane Policing feature enabled on</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">ontrol plane aggregate path</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config-cp)#</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config-cp)#do deb ip packet</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">IP packet debugging is on</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">R2(config)#do show policy-map control-plane all</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">Control Plane</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">Service-policy input: TEST</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">Class-map: ICMP (match-all)</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">15 packets, 1710 bytes</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">5 minute offered rate 0 bps, drop rate 0 bps</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">Match: access-group 101</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">drop</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">Class-map: class-default (match-any)</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">14 packets, 1420 bytes</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">5 minute offered rate 0 bps, drop rate 0 bps</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">Match: any</div> <div id="_mcePaste" style="position: absolute; left: -10000px; top: 0px; width: 1px; height: 1px; overflow-x: hidden; overflow-y: hidden;">
So ICMP was silently dropped
You can use these amazing feature, to limit for exameple SYN destinated to the RP – Just a thought
Victor.-
Most of the traffic travels through the router via the data plane, but a RP must handle some things, like routing updates, or network management traffic, Control Plane Policing (CPP) (or CoPP for the 6500 implementation)), is a dedicated control plane and can be configured with MQC to provide filtering and policing.
Router Router#conf ter Enter configuration commands, one per line. End with CNTL/Z. Router(config)#hostname R2 R2(config)#int f1/0 R2(config-if)#ip add 10.1.12.2 255.255.255.0 R2(config-if)#no sh R2(config-if)#exit R2(config)# R2(config)# R2(config)#do ping 10.1.12.1 Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 10.1.12.1, timeout is 2 seconds: .!!!! Success rate is 80 percent (4/5), round-trip min/avg/max = 8/58/116 ms R2(config)# R2(config)#ip access-list ex 101 R2(config-ext-nacl)#permit icmp any any R2(config-ext-nacl)#exit R2(config)#class-map ICMP R2(config-cmap)#ma access-group 101 R2(config-cmap)#exit R2(config)#policy-map TEST R2(config-pmap)#class ICMP R2(config-pmap-c)#drop R2(config-pmap-c)#exit R2(config-pmap)#control-plane R2(config-cp)#? Control Plane configuration commands: exit Exit from control-plane configuration mode no Negate or set default values of a command service-policy Configure QOS Service Policy R2(config-cp)#service-policy in TEST *Feb 28 00:53:03.359: %CP-5-FEATURE: Control-plane Policing feature enabled on ontrol plane aggregate path R2(config-cp)#do show policy-map Policy Map TEST Class ICMP drop R2(config-cp)#no service-policy in TEST R2(config-cp)#do deb ip icmp ICMP packet debugging is on R2(config-cp)# *Feb 28 00:53:47.287: ICMP: echo reply sent, src 10.1.12.2, dst 10.1.12.1 *Feb 28 00:53:47.351: ICMP: echo reply sent, src 10.1.12.2, dst 10.1.12.1 *Feb 28 00:53:47.403: ICMP: echo reply sent, src 10.1.12.2, dst 10.1.12.1 *Feb 28 00:53:47.411: ICMP: echo reply sent, src 10.1.12.2, dst 10.1.12.1 *Feb 28 00:53:47.419: ICMP: echo reply sent, src 10.1.12.2, dst 10.1.12.1 R2(config-cp)# R2(config-cp)# R2(config-cp)#control-plane R2(config-cp)#service-policy in TEST R2(config-cp)# R2(config-cp)# R2(config-cp)# *Feb 28 00:53:56.139: %CP-5-FEATURE: Control-plane Policing feature enabled on ontrol plane aggregate path R2(config-cp)# R2(config-cp)#do deb ip packet IP packet debugging is on R2(config)#do show policy-map control-plane all Control Plane Service-policy input: TEST Class-map: ICMP (match-all) 15 packets, 1710 bytes 5 minute offered rate 0 bps, drop rate 0 bps Match: access-group 101 drop Class-map: class-default (match-any) 14 packets, 1420 bytes 5 minute offered rate 0 bps, drop rate 0 bps Match: any
ICMP was silently dropped
You can use these amazing feature, to limit for exameple SYN destinated to the Route Processor – Just a thought
