使用测试的环回以太网接口
当必要时,环回可以用于查找问题用线卡、结构、网络处理器(NP),收发器或者光学转接路径。
有两主要的环回:内部和外部。
内部环路可以远程完成,但是不提供同样多信息。
必须在站点执行外部环路,但是给信息量。
下面的示例使用此接口:
RP/0/RSP0/CPU0:ASR9001-F# show run int tenGigE 0/0/1/1 interface TenGigE0/0/1/1 ipv4 address 10.100.101.1 255.255.255.0 !
内部回环
这是可以被执行,不用对远程站点的访问的基本测试。它能找到问题用CPU、结构路径、NP和收发器,但是找不到光学或传输问题。
配置环回
这影响数据流的
RP/0/RSP0/CPU0:ASR9001-F# configure RP/0/RSP0/CPU0:ASR9001-F(config)# int tenGigE 0/0/1/1 RP/0/RSP0/CPU0:ASR9001-F(config-if)# loopback internal RP/0/RSP0/CPU0:ASR9001-F(config-if)# commit RP/0/RSP0/CPU0:ASR9001-F(config-if)# end
clear counters
这清除在接口和控制器的计数器。
RP/0/RSP0/CPU0:ASR9001-F# clear counters tenGigE 0/0/1/1 Clear "show interface" counters on this interface [confirm]
ping本地IP
RP/0/RSP0/CPU0:ASR9001-F# ping 10.100.101.1 count 10000 size 1500 timeout 0 pings with timeout=0 may result in system instability and control protocol flaps resulting in traffic impact. DO you really want to continue[confirm with only 'y' or 'n'] [y/n] :y Type escape sequence to abort. Sending 10000, 1500-byte ICMP Echos to 10.100.101.1, timeout is 0 seconds: !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! [output omitted] !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Success rate is 100 percent (10000/10000), round-trip min/avg/max = 1/1/5 ms
检查接口计数器
RP/0/RSP0/CPU0:ASR9001-F# show interfaces tenGigE 0/0/1/1 TenGigE0/0/1/1 is up, line protocol is up Interface state transitions: 3 Hardware is TenGigE, address is 70e4.2217.ba65 (bia 70e4.2217.ba65) Layer 1 Transport Mode is LAN Internet address is 10.100.101.1/24 MTU 1514 bytes, BW 10000000 Kbit (Max: 10000000 Kbit) reliability 255/255, txload 0/255, rxload 0/255 Encapsulation ARPA, Full-duplex, 10000Mb/s, link type is force-up output flow control is off, input flow control is off loopback set (External), ARP type ARPA, ARP timeout 04:00:00 Last input 00:00:00, output 00:00:00 Last clearing of "show interface" counters 00:02:40 5 minute input rate 685000 bits/sec, 126 packets/sec 5 minute output rate 685000 bits/sec, 126 packets/sec 10003 packets input, 15140657 bytes, 0 total input drops 0 drops for unrecognized upper-level protocol Received 0 broadcast packets, 3 multicast packets 0 runts, 0 giants, 0 throttles, 0 parity 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 10003 packets output, 15140657 bytes, 0 total output drops Output 0 broadcast packets, 3 multicast packets 0 output errors, 0 underruns, 0 applique, 0 resets 0 output buffer failures, 0 output buffers swapped out 0 carrier transitions
检查控制器计数器
RP/0/RSP0/CPU0:ASR9001-F# show controllers tenGigE 0/0/1/1 stats Statistics for interface TenGigE0/0/1/1 (cached values): Ingress: Input total bytes = 15140657 Input good bytes = 15140657 Input total packets = 10003 Input 802.1Q frames = 0 Input pause frames = 0 Input pkts 64 bytes = 0 Input pkts 65-127 bytes = 0 Input pkts 128-255 bytes = 3 Input pkts 256-511 bytes = 0 Input pkts 512-1023 bytes = 0 Input pkts 1024-1518 bytes = 10000 Input pkts 1519-Max bytes = 0 Input good pkts = 10003 Input unicast pkts = 10000 Input multicast pkts = 3 Input broadcast pkts = 0 Input drop overrun = 0 Input drop abort = 0 Input drop invalid VLAN = 0 Input drop invalid DMAC = 0 Input drop invalid encap = 0 Input drop other = 0 Input error giant = 0 Input error runt = 0 Input error jabbers = 0 Input error fragments = 0 Input error CRC = 0 Input error collisions = 0 Input error symbol = 0 Input error other = 0 Input MIB giant = 0 Input MIB jabber = 0 Input MIB CRC = 0 Egress: Output total bytes = 15140657 Output good bytes = 15140657 Output total packets = 10003 Output 802.1Q frames = 0 Output pause frames = 0 Output pkts 64 bytes = 0 Output pkts 65-127 bytes = 0 Output pkts 128-255 bytes = 3 Output pkts 256-511 bytes = 0 Output pkts 512-1023 bytes = 0 Output pkts 1024-1518 bytes = 10000 Output pkts 1519-Max bytes = 0 Output good pkts = 10003 Output unicast pkts = 10000 Output multicast pkts = 3 Output broadcast pkts = 0 Output drop underrun = 0 Output drop abort = 0 Output drop other = 0 Output error other = 0
外部回环
此测验验证线路卡中央处理器(CPU)、结构路径、NP、收发器和光学。
此测验要求一个长度光缆物理的循环transmit (TX)信号到接收(Rx)端口。
配置环回
这影响数据流的
RP/0/RSP0/CPU0:ASR9001-F# configure RP/0/RSP0/CPU0:ASR9001-F(config)# interface tenGigE 0/0/1/1 RP/0/RSP0/CPU0:ASR9001-F(config-if)# loopback external RP/0/RSP0/CPU0:ASR9001-F(config-if)# commit RP/0/RSP0/CPU0:ASR9001-F(config-if)# end
clear counters
这清除在接口和控制器的计数器。
RP/0/RSP0/CPU0:ASR9001-F# clear counters Clear "show interface" counters on all interfaces [confirm]
ping本地IP
RP/0/RSP0/CPU0:ASR9001-F# ping 10.100.101.1 count 10000 size 1500 timeout 0 pings with timeout=0 may result in system instability and control protocol flaps resulting in traffic impact. DO you really want to continue[confirm with only 'y' or 'n'] [y/n] :y Type escape sequence to abort. Sending 10000, 1500-byte ICMP Echos to 10.100.101.1, timeout is 0 seconds: !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! [output omitted] !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! Success rate is 100 percent (10000/10000), round-trip min/avg/max = 1/1/5 ms
检查接口计数器
RP/0/RSP0/CPU0:ASR9001-F# show interfaces tenGigE 0/0/1/1 TenGigE0/0/1/1 is up, line protocol is up Interface state transitions: 7 Hardware is TenGigE, address is 70e4.2217.ba65 (bia 70e4.2217.ba65) Layer 1 Transport Mode is LAN Internet address is 10.100.101.1/24 MTU 1514 bytes, BW 10000000 Kbit (Max: 10000000 Kbit) reliability 255/255, txload 0/255, rxload 0/255 Encapsulation ARPA, Full-duplex, 10000Mb/s, link type is force-up output flow control is off, input flow control is off loopback set (Internal), ARP type ARPA, ARP timeout 04:00:00 Last input 00:00:00, output 00:00:00 Last clearing of "show interface" counters 00:00:32 5 minute input rate 504000 bits/sec, 52 packets/sec 5 minute output rate 504000 bits/sec, 52 packets/sec 10001 packets input, 15140219 bytes, 0 total input drops 0 drops for unrecognized upper-level protocol Received 0 broadcast packets, 1 multicast packets 0 runts, 0 giants, 0 throttles, 0 parity 0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort 10001 packets output, 15140219 bytes, 0 total output drops Output 0 broadcast packets, 1 multicast packets 0 output errors, 0 underruns, 0 applique, 0 resets 0 output buffer failures, 0 output buffers swapped out 0 carrier transitions
检查控制器计数器
RP/0/RSP0/CPU0:ASR9001-F# show controllers tenGigE 0/0/1/1 stats Statistics for interface TenGigE0/0/1/1 (cached values): Ingress: Input total bytes = 15140219 Input good bytes = 15140219 Input total packets = 10001 Input 802.1Q frames = 0 Input pause frames = 0 Input pkts 64 bytes = 0 Input pkts 65-127 bytes = 0 Input pkts 128-255 bytes = 1 Input pkts 256-511 bytes = 0 Input pkts 512-1023 bytes = 0 Input pkts 1024-1518 bytes = 10000 Input pkts 1519-Max bytes = 0 Input good pkts = 10001 Input unicast pkts = 10000 Input multicast pkts = 1 Input broadcast pkts = 0 Input drop overrun = 0 Input drop abort = 0 Input drop invalid VLAN = 0 Input drop invalid DMAC = 0 Input drop invalid encap = 0 Input drop other = 0 Input error giant = 0 Input error runt = 0 Input error jabbers = 0 Input error fragments = 0 Input error CRC = 0 Input error collisions = 0 Input error symbol = 0 Input error other = 0 Input MIB giant = 0 Input MIB jabber = 0 Input MIB CRC = 0 Egress: Output total bytes = 15140219 Output good bytes = 15140219 Output total packets = 10001 Output 802.1Q frames = 0 Output pause frames = 0 Output pkts 64 bytes = 0 Output pkts 65-127 bytes = 0 Output pkts 128-255 bytes = 1 Output pkts 256-511 bytes = 0 Output pkts 512-1023 bytes = 0 Output pkts 1024-1518 bytes = 10000 Output pkts 1519-Max bytes = 0 Output good pkts = 10001 Output unicast pkts = 10000 Output multicast pkts = 1 Output broadcast pkts = 0 Output drop underrun = 0 Output drop abort = 0 Output drop other = 0 Output error other = 0
参考资料
Cisco ASR 9000系列聚合服务路由器接口和硬件组件命令参考,版本4.3.x章节:以太网接口On命令Cisco ASR 9000系列路由器