组网不涉及
告警信息不涉及
现网两台S6825正常组建堆叠的情况下,两框均存在被MAD down的端口
display irf===============
MemberID Role Priority CPU-Mac Description
+1 Standby 32 xxxx-xxxx-xxxx ---
*2 Master 1 xxxx-xxxx-xxxx ---
--------------------------------------------------
<SW>dis mad verbose
Multi-active recovery state: Yes
Excluded ports (user-configured):
Excluded ports (system-configured):
IRF physical interfaces:
HundredGigE1/0/29
HundredGigE1/0/30
HundredGigE2/0/29
HundredGigE2/0/30
BFD MAD interfaces:
Twenty-FiveGigE1/0/24
Twenty-FiveGigE2/0/24
Route-Aggregation1001
MAD ARP disabled.
MAD ND disabled.
MAD LACP disabled.
MAD BFD enabled interface: Route-Aggregation1001
MAD status : Faulty
Member ID MAD IP address Neighbor MAD status
1 1.1.1.1/30 2 Faulty
2 1.1.1.2/30 1 Faulty
HundredGigE1/0/27
Current state: MAD ShutDown
Line protocol state: DOWN
IP packet frame type: Ethernet II, hardware address: 18c0-09ae-d5a6
Description: HundredGigE1/0/27 Interface
Bandwidth: 100000000 kbps
Loopback is not set
Media type is not sure, p
HundredGigE2/0/27
Current state: MAD ShutDown
Line protocol state: DOWN
IP packet frame type: Ethernet II, hardware address: 18c0-09af-1bb0
Description: HundredGigE2/0/27 Interface
Bandwidth: 100000000 kbps
Twenty-FiveGigE1/0/24
Current state: MAD ShutDown
Line protocol state: DOWN(LAGG)
Description: Twenty-FiveGigE1/0/24 Interface
1.设备上的异常点有两个,一是堆叠已经正常组建的情况下,两个槽位上的接口均被MAD down
梳理现场的操作日志来看,现场的操作顺序是先将slot1和slot2进行了组堆叠,然后对堆叠口进行了shutdown处理导致两框堆叠分裂,此时,堆叠分裂后slot2被MAD,置于recovery状态。后续又undo irf-port。后在slot2上配置irf端口,添加堆叠口,把slot2的堆叠口undo shutdown,再激活irf端口。最后再配置slot1的端口,添加堆叠口,undo shutdown ,然后重启slot1。
这个过程中,重启slot1是不合理的,因为slot2在之前的分裂中已经被mad down了,此时应该重启处于recovery的设备使其加入堆叠,但是现场实际重启的slot1,slot1以备设备角色加入到堆叠,会去同步当前主设备的状态,备机起来后会恢复成跟主机一致的MAD状态
二是slot1上做MAD的口,本应是系统保留接口,但是也被MADdown了,这是因为,堆叠分裂后,slot2上MAD模块收集聚合成员口时已经没有分裂出去的slot1的接口了,认为slot1上的成员物理口不再是保留接口,导致slot1加入堆叠后同步slot2的MAD模块后,slot1的MAD口也被mad down了
可以执行mad restore进行恢复
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