在Cisco的路由器上一般对接口的操作有show interfaces和show ip interface，这两个命令在功能上有着很大的不同，具体的比较如下：

router#qwareroute#show interface s0
Serial0 is up, line protocol is up
Hardware is HD64570
MTU 1500 bytes, BW 256 Kbit, DLY 20000 usec, rely 255/255, load 1/255
Encapsulation FRAME-RELAY IETF, loopback not set, keepalive set (10 sec)
LMI enq sent 203097, LMI stat recvd 203087, LMI upd recvd 0, DTE LMI up
LMI enq recvd 0, LMI stat sent 0, LMI upd sent 0
LMI DLCI 0 LMI type is ANSI Annex D frame relay DTE
FR SVC disabled, LAPF state down
Broadcast queue 0/64, broadcasts sent/dropped 33820/0, interface broadcasts 0
Last input 00:00:00, output 00:00:00, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/4 (size/max/drops); Total output drops: 0
Queueing strategy: weighted fair
Output queue: 0/1000/0 (size/max total/drops)
Conversations 0/41/64 (active/max active/threshold)
Reserved Conversations 0/0 (allocated/max allocated)
5 minute input rate 1000 bits/sec, 1 packets/sec
5 minute output rate 0 bits/sec, 1 packets/sec
2069239 packets input, 779029158 bytes, 4 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
4 input errors, 4 CRC, 0 frame, 0 overrun, 0 ignored, 1 abort
1603933 packets output, 190108898 bytes, 0 underruns
0 output errors, 0 collisions, 6 interface resets
0 output buffer failures, 0 output buffers swapped out
0 carrier transitions
DCD=up DSR=up DTR=up RTS=up CTS=up

router#show ip interface
Serial0 is up, line protocol is up
Internet protocol processing disabled
Serial0.1 is up, line protocol is up
Internet address is a.b.c.d/30
Broadcast address is 255.255.255.255
Address determined by non-volatile memory
MTU is 1500 bytes
Helper address is not set
Directed broadcast forwarding is enabled
Outgoing access list is not set
Inbound access list is 101
Proxy ARP is enabled
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 enabled
IP multicast fast switching is enabled
Router Discovery is disabled
IP output packet accounting is disabled
IP access violation accounting is disabled
TCP/IP header compression is disabled
Probe proxy name replies are disabled
Gateway Discovery is disabled
Policy routing is disabled
Network address translation is disabled

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