我们有一个 ME-3600，我们看到一个奇怪的问题。该设备有一个在全网状城域以太网中使用的 SVI。SVI 用于管理，也是路由协议的对等源。由于没有（明显的）原因，SVI 出现故障，它只绑定到一个接口，我们没有看到物理接口出现故障。我们尝试将 SVI 固定到另一个接口以保持其正常运行，这将使 SVI 保持正常运行，但我们仍然会看到所有路由协议反弹。
装置：
problemchild uptime is 5 weeks, 2 days, 11 hours, 47 minutes
System returned to ROM by power-on
System restarted at 19:01:24 MST Fri Feb 13 2015
System image file is "flash:/me360x-universalk9-mz.153-3.S1a/me360x-universalk9-mz.153-3.S1a.bin"
Last reload reason: Reload Command
License Level: AdvancedMetroIPAccess
License Type: Permanent
Next reload license Level: AdvancedMetroIPAccess
cisco ME-3600X-24FS-M (PowerPC8572) processor (revision A0) with 983040K/65528K bytes of memory.
相关日志消息：
Mar 19 20:51:32.090 MDT: %LDP-5-GR: GR session 10.255.10.63:0 (inst 93): completed graceful recovery
Mar 19 20:51:32.102 MDT: %LDP-5-GR: GR session 10.255.10.47:0 (inst 94): completed graceful recovery
Mar 19 20:51:32.102 MDT: %LDP-5-GR: GR session 10.255.10.50:0 (inst 95): completed graceful recovery
Mar 20 03:28:22.614 MDT: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan105, changed state to down
Mar 20 03:28:22.630 MDT: %OSPF-5-ADJCHG: Process 1, Nbr 10.255.0.17 on Vlan105 from 2WAY to DOWN, Neighbor Down: Interface down or detached
Mar 20 03:28:22.630 MDT: %OSPF-5-ADJCHG: Process 1, Nbr 10.255.0.33 on Vlan105 from FULL to DOWN, Neighbor Down: Interface down or detached
Mar 20 03:28:22.634 MDT: %OSPF-5-ADJCHG: Process 1, Nbr 10.255.0.49 on Vlan105 from FULL to DOWN, Neighbor Down: Interface down or detached
....continued....
Mar 20 03:28:50.091 MDT: %BGP_SESSION-5-ADJCHANGE: neighbor 10.255.0.2 VPNv4 Unicast topology base removed from session BGP Notification sent
Mar 20 03:28:52.815 MDT: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan105, changed state to up
Mar 20 03:28:57.611 MDT: %OSPF-5-ADJCHG: Process 1, Nbr 10.255.0.33 on Vlan105 from LOADING to FULL, Loading Done
Mar 20 03:28:57.875 MDT: %OSPF-5-ADJCHG: Process 1, Nbr 10.255.0.49 on Vlan105 from LOADING to FULL, Loading Done
Mar 20 03:29:08.727 MDT: %LDP-5-NBRCHG: LDP Neighbor 10.255.0.33:0 (1) is UP
Mar 20 03:29:08.727 MDT: %LDP-5-NBRCHG: LDP Neighbor 10.255.0.49:0 (2) is UP
Mar 20 03:29:08.727 MDT: %LDP-5-NBRCHG: LDP Neighbor 10.255.0.17:0 (3) is UP
接口细节：
problemchild#sh vlan id 105
VLAN Name Status Ports
---- -------------------------------- --------- -------------------------------
105 xxxxxxxxx active Gi0/24
problemchild#sh run int gi0/24
interface GigabitEthernet0/24
description metroE circuit
switchport trunk allowed vlan 1,105,144,145,170
switchport mode trunk
mtu 1522
bandwidth 40000
service-policy output xxx-OUT
end
problemchild#sh run int vl105
interface Vlan105
description EVC mgmt interface
mtu 1522
bandwidth 40000
ip address 10.15.0.22 255.255.254.0
ip ospf message-digest-key 1 md5 xxxx
ip ospf priority 0
ip ospf mtu-ignore
mpls ip
end
problemchild#sh int gi0/24
GigabitEthernet0/24 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet, address is 24b6.5732.2098 (bia 24b6.5732.2098)
Description: metroE circuit
MTU 1522 bytes, BW 40000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 76/255, rxload 32/255
Encapsulation ARPA, loopback not set
Keepalive not set
Full-duplex, 1000Mb/s, media type is SX
input flow-control is off, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input never, output 00:00:00, output hang never
Last clearing of "show interface" counters 5w2d
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 1785964
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 5020000 bits/sec, 1398 packets/sec
5 minute output rate 12010000 bits/sec, 2241 packets/sec
1820442136 packets input, 922204069899 bytes, 0 no buffer
Received 58765981 broadcasts (58764761 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 58764761 multicast, 0 pause input
0 input packets with dribble condition detected
1422024326 packets output, 852355101625 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
输出策略图：
problemchild#sh policy-map int gi0/24
GigabitEthernet0/24
Service-policy output: xxx-OUT
Class-map: class-default (match-any)
1402564353 packets, 839023628650 bytes
5 minute offered rate 3498000 bps, drop rate 0000 bps
Match: any
Traffic Shaping
Average Rate Traffic Shaping
Shape 40000 (kbps)
Output Queue:
Default Queue-limit 49152 bytes
Tail Packets Drop: 418017
Tail Bytes Drop: 373661094
Service-policy : All_Agency_CBWFQ
Class-map: xxxx_Q1 (match-any)
0 packets, 0 bytes
5 minute offered rate 0000 bps, drop rate 0000 bps
Match: precedence 5
Match: dscp cs5 (40) 41 42 43 44 45 ef (46) 47
police:
cir 9950000 bps, bc 310937 bytes
conform-action transmit
exceed-action drop
conform: 0 (packets) 0 (bytes)
exceed: 0 (packets) 0 (bytes)
conform: 0 bps, exceed: 0 bps
Strict Priority
Queue-limit 32000 bytes
Queue-limit current-queue-depth 0 bytes
Output Queue:
Default Queue-limit 49152 bytes
Tail Packets Drop: 0
Tail Bytes Drop: 0
Class-map: xxxx_Q2 (match-any)
0 packets, 0 bytes
5 minute offered rate 0000 bps, drop rate 0000 bps
Match: precedence 4
Match: precedence 6
Match: precedence 7
Match: dscp cs4 (32) 33 af41 (34) 35 af42 (36) 37 af43 (38) 39
Match: dscp cs6 (48) 49 50 51 52 53 54 55
Match: dscp cs7 (56) 57 58 59 60 61 62 63
Bandwidth 8950 (kbps)
Queue-limit 32000 bytes
Exp-weighted-constant 9
Random_detect prec
4 6 7 28000 32000 bytes 10
Queue-limit current-queue-depth 0 bytes
Output Queue:
Default Queue-limit 49152 bytes
Tail Packets Drop: 0
Tail Bytes Drop: 0
Class-map: xxxx_Q3 (match-any)
1022048 packets, 301438609 bytes
5 minute offered rate 0000 bps, drop rate 0000 bps
Match: precedence 2
Match: precedence 3
Match: dscp cs2 (16) 17 af21 (18) 19 af22 (20) 21 af23 (22) 23
Match: dscp cs3 (24) 25 af31 (26) 27 af32 (28) 29 af33 (30) 31
Bandwidth 8950 (kbps)
Queue-limit 32000 bytes
Exp-weighted-constant 9
Random_detect prec
2 3 28000 32000 bytes 10
Queue-limit current-queue-depth 0 bytes
Output Queue:
Default Queue-limit 49152 bytes
Tail Packets Drop: 0
Tail Bytes Drop: 0
Class-map: xxxx_Q4 (match-any)
779962 packets, 76289466 bytes
5 minute offered rate 0000 bps, drop rate 0000 bps
Match: precedence 0
Match: precedence 1
Match: dscp default (0) 1 2 3 4 5 6 7
Match: dscp cs1 (8) 9 af11 (10) 11 af12 (12) 13 af13 (14) 15
Bandwidth 11950 (kbps)
Queue-limit 64000 bytes
Exp-weighted-constant 9
Random_detect prec
0 1 58000 64000 bytes 10
Queue-limit current-queue-depth 0 bytes
Output Queue:
Default Queue-limit 49152 bytes
Tail Packets Drop: 0
Tail Bytes Drop: 0
Class-map: class-default (match-any)
1400762343 packets, 838645900575 bytes
5 minute offered rate 3496000 bps, drop rate 0000 bps
Match: any