RFC 5635
Article 1
Article 2
Article 3
R2#sho cef interface fastEthernet 0/0
FastEthernet0/0 is up (if_number 3)
Corresponding hwidb fast_if_number 3
Corresponding hwidb firstsw->if_number 3
Internet address is 12.1.1.2/24
ICMP redirects are always sent
Per packet load-sharing is disabled
IP unicast RPF check is enabled
Input features: uRPF
IP policy routing is disabled
BGP based policy accounting on input is disabled
BGP based policy accounting on output is disabled
Hardware idb is FastEthernet0/0
Fast switching type 1, interface type 18
IP CEF switching enabled
IP CEF switching turbo vector
IP CEF turbo switching turbo vector
IP prefix lookup IPv4 mtrie 8-8-8-8 optimized
Input fast flags 0x4000, Output fast flags 0x0
ifindex 3(3)
Slot Slot unit 0 VC -1
IP MTU 1500
R2#show cef interface fastEthernet 1/0
FastEthernet1/0 is up (if_number 4)
Corresponding hwidb fast_if_number 4
Corresponding hwidb firstsw->if_number 4
Internet address is 23.1.1.2/24
ICMP redirects are always sent
Per packet load-sharing is disabled
IP unicast RPF check is disabled
IP policy routing is disabled
BGP based policy accounting on input is disabled
BGP based policy accounting on output is disabled
Hardware idb is FastEthernet1/0
Fast switching type 1, interface type 18
IP CEF switching enabled
IP CEF switching turbo vector
IP CEF turbo switching turbo vector
IP prefix lookup IPv4 mtrie 8-8-8-8 optimized
Input fast flags 0x0, Output fast flags 0x0
ifindex 4(4)
Slot Slot unit 0 VC -1
IP MTU 1500
R2#show ip traffic
IP statistics:
Rcvd: 378 total, 363 local destination
0 format errors, 0 checksum errors, 10 bad hop count
0 unknown protocol, 0 not a gateway
0 security failures, 0 bad options, 0 with options
Opts: 0 end, 0 nop, 0 basic security, 0 loose source route
0 timestamp, 0 extended security, 0 record route
0 stream ID, 0 strict source route, 0 alert, 0 cipso, 0 ump
0 other
Frags: 0 reassembled, 0 timeouts, 0 couldn't reassemble
0 fragmented, 0 fragments, 0 couldn't fragment
Bcast: 0 received, 0 sent
Mcast: 354 received, 363 sent
Sent: 372 generated, 35 forwarded
Drop: 1 encapsulation failed, 0 unresolved, 0 no adjacency
0 no route, 10 unicast RPF, 0 forced drop
0 options denied
Drop: 0 packets with source IP address zero
Drop: 0 packets with internal loop back IP address
0 physical broadcast
Reinj: 0 in input feature path, 0 in output feature path
ICMP statistics:
Rcvd: 0 format errors, 0 checksum errors, 0 redirects, 0 unreachable
0 echo, 0 echo reply, 0 mask requests, 0 mask replies, 0 quench
0 parameter, 0 timestamp, 0 timestamp replies, 0 info request, 0 other
0 irdp solicitations, 0 irdp advertisements
0 time exceeded, 0 info replies
Sent: 0 redirects, 0 unreachable, 0 echo, 0 echo reply
0 mask requests, 0 mask replies, 0 quench, 0 timestamp, 0 timestamp replies
0 info reply, 0 time exceeded, 0 parameter problem
0 irdp solicitations, 0 irdp advertisements
UDP statistics:
Rcvd: 0 total, 0 checksum errors, 0 no port 0 finput
!------------------------------ output ommitted ----------
R2#show ip traffic | include RPF
0 no route, 15 unicast RPF, 0 forced drop
R1#ping 3.3.3.3 source 111.111.111.111 .....
R2#show ip traffic | include RPF
0 no route, 20 unicast RPF, 0 forced drop
R2#sho ip interface fastEthernet 0/0
FastEthernet0/0 is up, line protocol is up
Internet address is 12.1.1.2/24
Broadcast address is 255.255.255.255
Address determined by setup command
MTU is 1500 bytes
Helper address is not set
Directed broadcast forwarding is disabled
Multicast reserved groups joined: 224.0.0.5 224.0.0.6
Outgoing access list is not set
Inbound access list is not set
Proxy ARP is enabled
Local Proxy ARP is disabled
Security level is default
Split horizon is enabled
ICMP redirects are always sent
ICMP unreachables are always sent
ICMP mask replies are never sent
IP fast switching is enabled
IP fast switching on the same interface is disabled
IP Flow switching is disabled
IP CEF switching is enabled
IP CEF switching turbo vector
IP CEF turbo switching turbo vector
IP multicast fast switching is enabled
IP multicast distributed fast switching is disabled
IP route-cache flags are Fast, CEF
Router Discovery is disabled
IP output packet accounting is disabled
IP access violation accounting is disabled
TCP/IP header compression is disabled
RTP/IP header compression is disabled
Policy routing is disabled
Network address translation is disabled
BGP Policy Mapping is disabled
Input features: uRPF, MCI Check
IPv4 WCCP Redirect outbound is disabled
IPv4 WCCP Redirect inbound is disabled
IPv4 WCCP Redirect exclude is disabled
IP verify source reachable-via RX, ACL 150
20 verification drops
5 suppressed verification drops
0 verification drop-rate
R2#
R2#
