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本文档介绍如何解决由于Catalyst 9000交换机上的堆栈问题导致的意外重新加载。
Cisco建议您了解这些主题。
本文档中的信息基于以下软件和硬件版本:
本文档还可与以下硬件和软件版本一起使用:
本文档中的信息都是基于特定实验室环境中的设备编写的。本文档中使用的所有设备最初均采用原始(默认)配置。如果您的网络处于活动状态,请确保您了解所有命令的潜在影响。
堆栈重置原因在下表中描述。
| 重置原因 | 描述 |
|---|---|
|
堆栈合并 |
当至少两个堆叠成员声称是堆叠的活动交换机时,将观察到此情况。当堆栈环断开或堆栈发现协议(SDP)消息因堆栈电缆损坏而丢失时,可以看到这种情况。 |
|
由于不兼容而导致堆栈合并 |
与堆栈合并相同。在半环堆栈配置中更常见。 |
|
主用和备用均丢失 |
当主用交换机丢失时,如果备用交换机由于任何原因无法承担主用角色,则会重新加载所有其他堆叠成员并使用此重置原因。在半环配置中配置堆栈时也可以看到这种情况。 |
|
堆栈电缆身份验证失败 |
通常由于堆叠电缆或堆叠端口故障而出现。也可能是因为软件问题导致的。 |
|
堆栈适配器身份验证失败 |
通常由于堆叠电缆、堆叠适配器或堆叠端口故障而出现。也可能是因为软件问题导致的。 |
验证堆栈的所有成员的最后重新加载原因。
show version
show switch show logging onboard switch <switch number> uptime detail
在命令show version输出中,您可以确定每个堆叠成员的不同重置原因。
switch#show version <omitted output> Last reload reason: stack merge <-- Switch 1 Reason
<omitted output> Switch Ports Model SW Version SW Image Mode ------ ----- ----- ---------- ---------- ---- * 1 53 C9300-48P 17.3.5 CAT9K_IOSXE INSTALL 2 53 C9300-48P 17.3.5 CAT9K_IOSXE INSTALL 3 53 C9300-48P 17.3.5 CAT9K_IOSXE INSTALL Switch 02 --------- Switch uptime : 13 hours, 47 minutes Base Ethernet MAC Address : aa:aa:aa:aa:aa:aa Motherboard Assembly Number : 11-11111-11 Motherboard Serial Number : AAAAAAAAAAA Model Revision Number : F0 Motherboard Revision Number : C0 Model Number : C9300-48P System Serial Number : AAAAAAAAAAB Last reload reason : stack merge due to incompatiblity <-- Switch 2 Reason Switch 03 --------- Switch uptime : 50 minutes Base Ethernet MAC Address : bb:bb:bb:bb:bb:bb Motherboard Assembly Number : 22-22222-22 Motherboard Serial Number : BBBBBBBBBBA Model Revision Number : E0 Motherboard Revision Number : C0 Model Number : C9300L-48P System Serial Number : BBBBBBBBBBB Last reload reason : lost both active and standby <-- Switch 3 Reason
命令show switch输出显示堆栈成员的当前角色。
switch#show switch
Switch/Stack Mac Address : xxxx.xxxx.xxxx - Local Mac Address
Mac persistency wait time: Indefinite
H/W Current
Switch# Role Mac Address Priority Version State
-------------------------------------------------------------------------------------
*1 Active xxxx.xxxx.xxxx 15 V01 Ready
2 Standby aaaa.aaaa.aaaa 14 V01 Ready
3 Member bbbb.bbbb.bbbb 13 V01 Ready
使用下一命令可查看上次重新加载原因记录。
switch#show logging onboard switch 1 uptime detail -------------------------------------------------------------------------------- UPTIME SUMMARY INFORMATION -------------------------------------------------------------------------------- First customer power on : 11/15/2019 22:46:33 Total uptime : 0 years 0 weeks 6 days 20 hours 15 minutes Total downtime : 0 years 46 weeks 5 days 23 hours 42 minutes Number of resets : 10 Number of slot changes : 0 Current reset reason : stack merge <-- Current reset timestamp : 10/15/2020 05:44:01 <-- Current slot : 1 Chassis type : 95 Current uptime : 0 years 0 weeks 0 days 13 hours 0 minutes -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- UPTIME CONTINUOUS INFORMATION -------------------------------------------------------------------------------- Time Stamp | Reset | Uptime MM/DD/YYYY HH:MM:SS | Reason | years weeks days hours minutes -------------------------------------------------------------------------------- <omitted output> 10/15/2020 05:44:01 stack merge 0 0 0 1 0 <-- -------------------------------------------------------------------------------- switch#show logging onboard switch 2 uptime detail -------------------------------------------------------------------------------- UPTIME SUMMARY INFORMATION -------------------------------------------------------------------------------- First customer power on : 11/21/2019 17:46:08 Total uptime : 0 years 0 weeks 6 days 23 hours 21 minutes Total downtime : 0 years 46 weeks 0 days 1 hours 36 minutes Number of resets : 14 Number of slot changes : 1 Current reset reason : stack merge due to incompatiblity <-- Current reset timestamp : 10/15/2020 05:44:03 Current slot : 2 Chassis type : 95 Current uptime : 0 years 0 weeks 0 days 13 hours 0 minutes -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- UPTIME CONTINUOUS INFORMATION -------------------------------------------------------------------------------- Time Stamp | Reset | Uptime MM/DD/YYYY HH:MM:SS | Reason | years weeks days hours minutes -------------------------------------------------------------------------------- <omitted output> 10/15/2020 05:44:03 stack merge due to incompatiblity 0 0 0 1 0 <-- -------------------------------------------------------------------------------- switch#show logging onboard switch 3 uptime detail -------------------------------------------------------------------------------- UPTIME SUMMARY INFORMATION -------------------------------------------------------------------------------- First customer power on : 08/13/2019 23:46:07 Total uptime : 0 years 38 weeks 5 days 11 hours 54 minutes Total downtime : 0 years 22 weeks 3 days 7 hours 45 minutes Number of resets : 37 Number of slot changes : 3 Current reset reason : lost both active and standby <-- Current reset timestamp : 10/15/2020 18:56:09 Current slot : 3 Chassis type : 95 Current uptime : 0 years 0 weeks 0 days 0 hours 30 minutes -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- UPTIME CONTINUOUS INFORMATION -------------------------------------------------------------------------------- Time Stamp | Reset | Uptime MM/DD/YYYY HH:MM:SS | Reason | years weeks days hours minutes -------------------------------------------------------------------------------- <omitted output> 10/15/2020 18:56:09 lost both active and standby 0 0 0 0 35 <-- --------------------------------------------------------------------------------
注意:错误“堆栈电缆身份验证失败”和“堆栈适配器身份验证失败”通常不允许受影响的交换机完全启动。因此,无法收集任何命令以进行进一步分析。按照列出的步骤检查相应的部分。
根据Catalyst 9200和9300交换机的硬件安装指南,必须确保堆叠符合堆叠电缆设置,并确保堆叠电缆设置正确。
堆栈电缆必须采用以下方式:
..
这样,堆栈设置就类似于这些映像。
Catalyst 9200L和9200

Catalyst 9300

插入堆栈适配器和/或堆栈电缆时,请使用以下说明:
Catalyst 9200L和9200
1.确保正确插入堆栈适配器。思科徽标必须位于顶部。
2.确保用手牢固地拧紧堆叠电缆。


Catalyst 9300L
1.确保正确插入堆栈适配器。思科徽标必须位于顶部。
2.确保用手牢固地拧紧堆叠电缆。


Catalyst 9300

在大多数情况下,由于堆栈电缆、堆栈适配器或堆栈端口损坏,会触发本文档中显示的意外重新加载。无论运行的软件版本如何,如果堆叠部件安装不正确,您都可能会受到此问题的影响。
验证“确认堆叠电缆设置”(Confirm Stack Cable Setup)和“安装堆叠电缆”(Install Stack Cables)部分后,使用以下命令检查堆叠电缆的运行状况:
show switch neighbors
show switch stack-ring speed
show switch stack-ports summary
show switch stack-ports detail
在本示例中,有一个由三台Catalyst 9300交换机组成的堆叠。命令show switch neighbors输出显示连接到每个堆叠成员的交换机:
switch#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 2 3
2 3 1
3 1 2 如果堆栈电缆不存在、插入错误或有故障,则会显示None而不是堆栈成员:
switch#show switch neighbors
Switch # Port 1 Port 2
-------- ------ ------
1 2 None <--
2 3 1
3 None 2 <--该命show switch stack-ring speed令可为您提供堆栈环状态:
switch#show switch stack-ring speed
Stack Ring Speed : 480G <--
Stack Ring Configuration: Full <--
Stack Ring Protocol : StackWise
如果由于任何原因堆栈环断开,输出如下所示:
switch#show switch stack-ring speed
Stack Ring Speed : 240G <--
Stack Ring Configuration: Half <--
Stack Ring Protocol : StackWise
警告:在正常的堆栈环配置中,永远不可能看到半状态。尽管堆叠工作正常,但它会损失一半的带宽和冗余。
正常的show switch stack-ports summary命令输出如下所示。
注意:交换机1的堆叠端口1显示了两个链路更改。这是正常现象。
switch#show switch stack-ports summary Sw#/Port# Port Status Neighbor Cable Length Link OK Link Active Sync OK #Changes to LinkOK In Loopback ------------------------------------------------------------------------------------------------------------------- 1/1 OK 2 50cm Yes Yes Yes 2 No 1/2 OK 3 100cm Yes Yes Yes 1 No 2/1 OK 3 50cm Yes Yes Yes 1 No 2/2 OK 1 50cm Yes Yes Yes 1 No 3/1 OK 1 100cm Yes Yes Yes 1 No 3/2 OK 2 50cm Yes Yes Yes 1 No
如果输出显示特定端口上有许多摆动,则可能是堆栈不稳定的信号。这种情况可能会触发堆栈合并。如果Unknown堆栈未正确布线,可以看到状态。
switch#show switch stack-ports summary Sw#/Port# Port Status Neighbor Cable Length Link OK Link Active Sync OK #Changes to LinkOK In Loopback ------------------------------------------------------------------------------------------------------------------- 1/1 OK 2 50cm Yes Yes Yes 16 No
<-- 16 flaps on switch 1 stack port 1 facing switch 2 1/2 OK 3 100cm Yes Yes Yes 1 No 2/1 OK 3 50cm Yes Yes Yes 1 No 2/2 OK 1 Unknown Yes Yes Yes 16 No
<-- Cable length 'unknown', 16 flaps on switch 2 stack port 2 facing switch 1 3/1 OK 1 100cm Yes Yes Yes 1 No 3/2 OK 2 50cm Yes Yes Yes 1 No
当发现过多的链路更改时,下一步是检查命令show switch stack-ports detail并重点关注计数CRC Errors器。接口上递增的CRC表示该端口上接收的数据包格式不正确。以下条件适用:
switch#show switch stack-ports detail
1 is OK Loopback No
Cable Length 100cm Neighbor 2
Link Ok Yes Sync Ok Yes Link Active Yes
Changes to LinkOK 16
Five minute input rate 1110 bytes/sec
Five minute output rate 47 bytes/sec
24798951 bytes input
737941 bytes output
CRC Errors
Data CRC 459731 <-- CRCs
Ringword CRC 35156 <-- CRCs
InvRingWord 54951 <-- CRCs
PcsCodeWord 35481 <-- CRCs
1/2 is OK Loopback No
Cable Length 100cm Neighbor 3
Link Ok Yes Sync Ok Yes Link Active Yes
Changes to LinkOK 1
Five minute input rate 164 bytes/sec
Five minute output rate 67 bytes/sec
0 bytes input
0 bytes output
CRC Errors
Data CRC 0
Ringword CRC 0
InvRingWord 0
PcsCodeWord 0
2/1 is OK Loopback No
Cable Length 50cm Neighbor 3
Link Ok Yes Sync Ok Yes Link Active Yes
Changes to LinkOK 0
Five minute input rate 0 bytes/sec
Five minute output rate 0 bytes/sec
0 bytes input
0 bytes output
CRC Errors
Data CRC 0
Ringword CRC 0
InvRingWord 0
PcsCodeWord 0
2/2 is OK Loopback No
Cable Length 50cm Neighbor 1
Link Ok Yes Sync Ok Yes Link Active Yes
Changes to LinkOK 16
Five minute input rate 30 bytes/sec
Five minute output rate 1093 bytes/sec
480028 bytes input
0 bytes output
CRC Errors
Data CRC 0 <-- No CRCs
Ringword CRC 0 <-- No CRCs
InvRingWord 0 <-- No CRCs
PcsCodeWord 0 <-- No CRCs
3/1 is OK Loopback No
Cable Length 100cm Neighbor 1
Link Ok Yes Sync Ok Yes Link Active Yes
Changes to LinkOK 1
Five minute input rate 0 bytes/sec
Five minute output rate 0 bytes/sec
81387545 bytes input
29294666 bytes output
CRC Errors
Data CRC 0
Ringword CRC 0
InvRingWord 0
PcsCodeWord 0
3/2 is OK Loopback No
Cable Length 100cm Neighbor 2
Link Ok Yes Sync Ok Yes Link Active Yes
Changes to LinkOK 1
Five minute input rate 1030 bytes/sec
Five minute output rate 0 bytes/sec
480028 bytes input
0 bytes output
CRC Errors
Data CRC 0
Ringword CRC 0
InvRingWord 0
PcsCodeWord 0
注意:此命show switch stack-ports detail令在Cisco IOS XE版本17.3.x及更高版本中可用。要检查早期版本上的CRC错误计数器,请使用旧版命令。
以0结尾的命令是堆栈端口1的CRC计数器,以1结尾的命令是堆栈端口2的CRC计数器。必须为所有堆栈成员输入这些命令。
show platform hardware fed switch <switch number> fwd-asic register read register-name SifRacDataCrcErrorCnt-0 show platform hardware fed switch <switch number> fwd-asic register read register-name SifRacRwCrcErrorCnt-0 show platform hardware fed switch <switch number> fwd-asic register read register-name SifRacInvalidRingWordCnt-0 show platform hardware fed switch <switch number> fwd-asic register read register-name SifRacPcsCodeWordErrorCnt-0
show platform hardware fed switch <switch number> fwd-asic register read register-name SifRacDataCrcErrorCnt-1
show platform hardware fed switch <switch number> fwd-asic register read register-name SifRacRwCrcErrorCnt-1
show platform hardware fed switch <switch number> fwd-asic register read register-name SifRacInvalidRingWordCnt-1
show platform hardware fed switch <switch number> fwd-asic register read register-name SifRacPcsCodeWordErrorCnt-1
注意:show switch stack-ports summary必#Changes至少两次检查命令输出中的LinkOK计数器和show switch stack-ports detail命令输出中的CRC计数器,以验证其中是否存在增量。静态计数器验证稳定的堆栈链路,而任何这些计数器的增量都验证堆栈链路不稳定。
出现堆栈问题时会显示这些日志。
Aug 9 21:54:22.911: %STACKMGR-6-STACK_LINK_CHANGE: Switch 1 R0/0: stack_mgr: Stack port 1 on Switch 1 is down
Aug 9 21:54:23.011: %STACKMGR-6-STACK_LINK_CHANGE: Switch 1 R0/0: stack_mgr: Stack port 1 on Switch 1 is up
Aug 9 21:54:35.096: %STACKMGR-6-STACK_LINK_CHANGE: Switch 1 R0/0: stack_mgr: Stack port 1 on Switch 1 is down
Aug 9 21:54:35.197: %STACKMGR-6-STACK_LINK_CHANGE: Switch 1 R0/0: stack_mgr: Stack port 1 on Switch 1 is up
Aug 9 21:54:40.334: %STACKMGR-6-STACK_LINK_CHANGE: Switch 2 R0/0: stack_mgr: Stack port 2 on Switch 2 is down
Aug 9 21:54:40.434: %STACKMGR-6-STACK_LINK_CHANGE: Switch 2 R0/0: stack_mgr: Stack port 2 on Switch 2 is up
半环场景中的堆叠端口摆动会导致堆叠拆分和交换机删除。在此场景中,半环中有六台交换机的堆叠。交换机1和6之间的堆栈链路不存在,并且交换机5和6之间的堆栈链路不断摆动。这会导致从堆叠中删除交换机成员6。
Apr 9 19:13:25.665: %STACKMGR-6-STACK_LINK_CHANGE: Switch 5 R0/0: stack_mgr: Stack port 1 on Switch 5 is up
Apr 9 19:13:42.513: %STACKMGR-4-SWITCH_REMOVED: Switch 2 R0/0: stack_mgr: Switch 6 has been removed from the stack.
Apr 9 19:13:42.588: %STACKMGR-4-SWITCH_REMOVED: Switch 1 R0/0: stack_mgr: Switch 6 has been removed from the stack.
Apr 9 19:13:42.827: %STACKMGR-4-SWITCH_REMOVED: Switch 5 R0/0: stack_mgr: Switch 6 has been removed from the stack.
Apr 9 19:13:42.999: %STACKMGR-4-SWITCH_REMOVED: Switch 4 R0/0: stack_mgr: Switch 6 has been removed from the stack.
Apr 9 19:13:43.031: %STACKMGR-4-SWITCH_REMOVED: Switch 3 R0/0: stack_mgr: Switch 6 has been removed from the stack.
Apr 9 19:13:47.666: %STACKMGR-6-STACK_LINK_CHANGE: Switch 5 R0/0: stack_mgr: Stack port 1 on Switch 5 is down
Apr 9 19:25:57.715: %STACKMGR-6-STACK_LINK_CHANGE: Switch 5 R0/0: stack_mgr: Stack port 1 on Switch 5 is up
Apr 9 19:26:15.817: %STACKMGR-4-SWITCH_REMOVED: Switch 2 R0/0: stack_mgr: Switch 6 has been removed from the stack.
Apr 9 19:26:15.946: %STACKMGR-4-SWITCH_REMOVED: Switch 1 R0/0: stack_mgr: Switch 6 has been removed from the stack.
Apr 9 19:26:16.290: %STACKMGR-4-SWITCH_REMOVED: Switch 5 R0/0: stack_mgr: Switch 6 has been removed from the stack.
Apr 9 19:26:16.450: %STACKMGR-4-SWITCH_REMOVED: Switch 3 R0/0: stack_mgr: Switch 6 has been removed from the stack.
Apr 9 19:26:16.457: %STACKMGR-4-SWITCH_REMOVED: Switch 4 R0/0: stack_mgr: Switch 6 has been removed from the stack.
Apr 9 19:26:21.717: %STACKMGR-6-STACK_LINK_CHANGE: Switch 5 R0/0: stack_mgr: Stack port 1 on Switch 5 is down
Apr 9 19:38:31.766: %STACKMGR-6-STACK_LINK_CHANGE: Switch 5 R0/0: stack_mgr: Stack port 1 on Switch 5 is up
由于堆栈端口中出现过多的CRC错误,导致出现高硬件中断。
Jun 9 09:28:06.723: %SIF_MGR-1-FAULTY_CABLE: Switch 1 R0/0: sif_mgr: High hardware interrupt seen on switch 1
Jun 9 09:29:06.724: %SIF_MGR-1-FAULTY_CABLE: Switch 1 R0/0: sif_mgr: High hardware interrupt seen on switch 1
Jun 9 09:30:06.725: %SIF_MGR-1-FAULTY_CABLE: Switch 1 R0/0: sif_mgr: High hardware interrupt seen on switch 1
Jun 9 09:31:06.726: %SIF_MGR-1-FAULTY_CABLE: Switch 1 R0/0: sif_mgr: High hardware interrupt seen on switch 1
Jun 9 09:33:06.727: %SIF_MGR-1-FAULTY_CABLE: Switch 1 R0/0: sif_mgr: High hardware interrupt seen on switch 1
Jun 9 09:34:06.728: %SIF_MGR-1-FAULTY_CABLE: Switch 1 R0/0: sif_mgr: High hardware interrupt seen on switch 1
此类问题会阻止交换机启动,因show此命令不可行。
当交换机由于此问题而重新加载时,会显示堆栈电缆身份验证失败。
Waiting for 120 seconds for other switches to boot Switch is in STRAGGLER mode, waiting for active Switch to boot Active Switch has booted up, starting discovery phase ################### *** Stack cable authentication failed for cable inserted on stack port 2 on switch 1 *** <-- Reloading chassis because cable auth failed on stack_port 0# Chassis 1 reloading, reason - stack cable authentication failed reload fp action requested rp processes exit with reload switch code Jul 5 10:43:33.520: %PMAN-3-PROCESS_NOTIFICATION: R0/0: pvp:
System report /crashinfo/system-report_local_20201015-165033-Universal.tar.gz (size: 176 KB) generated
重新加show version载后输入命令。
switch#show version <omitted output> Last reload reason: Reload Command <-- switch 1
<omitted output> Switch 02 --------- Switch uptime : 60 minutes Base Ethernet MAC Address : aa:aa:aa:aa:aa:aa Motherboard Assembly Number : 11-11111-11 Motherboard Serial Number : AAAAAAAAAAA Model Revision Number : F0 Motherboard Revision Number : C0 Model Number : C9300-48P System Serial Number : AAAAAAAAAAB Last reload reason : Reload slot command Switch 03 --------- Switch uptime : 56 minutes Base Ethernet MAC Address : bb:bb:bb:bb:bb:bb Motherboard Assembly Number : 22-22222-22 Motherboard Serial Number : BBBBBBBBBBA Model Revision Number : E0 Motherboard Revision Number : C0 Model Number : C9300L-48P System Serial Number : BBBBBBBBBBB Last reload reason : stack cable authentication failure <--
switch#show logging onboard switch 3 uptime detail -------------------------------------------------------------------------------- UPTIME SUMMARY INFORMATION -------------------------------------------------------------------------------- First customer power on : 08/13/2019 23:46:07 Total uptime : 0 years 38 weeks 5 days 11 hours 54 minutes Total downtime : 0 years 22 weeks 3 days 7 hours 45 minutes Number of resets : 37 Number of slot changes : 3 Current reset reason : stack cable authentication failur <-- Current reset timestamp : 10/15/2020 18:56:09 Current slot : 3 Chassis type : 95 Current uptime : 0 years 0 weeks 0 days 0 hours 56 minutes -------------------------------------------------------------------------------- -------------------------------------------------------------------------------- UPTIME CONTINUOUS INFORMATION -------------------------------------------------------------------------------- Time Stamp | Reset | Uptime MM/DD/YYYY HH:MM:SS | Reason | years weeks days hours minutes -------------------------------------------------------------------------------- 10/15/2020 18:56:09 stack cable authentication failur 0 0 0 0 35 <-- --------------------------------------------------------------------------------
Stack adapter authentication failed 当交换机由于此软件缺陷而重新加载时,看起来是这样的。
Both links down, not waiting for other switches Switch number is X
*** Stack adapter authentication failed on stack port <1|2> on switch X *** <-- Stack Adapter Auth Fail : SIF_SERDES_CABLE_WESTBOUND
也可以像这样。
Both links down, not waiting for other switches Switch number is X
*** Stack adapter authentication failed on stack port <1|2> on switch X *** <--
Stack Adapter Auth Fail : SIF_SERDES_CABLE_EASTBOUND
注意:如果在交换机上发现堆栈适配器/电缆身份验证失败,则预期相应的交换机单独重新加载,而不是整个堆栈。
要通过后续测试组合将问题隔离到堆栈电缆、堆栈适配器或交换机本身,请完成以下步骤:
注意:Last reload reason:stack cable authentication failure有一个众所周知的bug。验证您未遇到此Bug,以防仅出现一次,并且您有Catalyst 9300L交换机。
Cisco Bug ID CSCvu25094 - 9300L crash due - stack cable authentication failure - reload reason only once.(由于9300L崩溃 — 堆栈电缆身份验证失败 — 重新加载原因仅一次。)
| 版本 | 发布日期 | 备注 |
|---|---|---|
3.0 |
07-Nov-2024
|
更新了“简介”、“链接”、“替换文本”、“语法”和“格式”。 |
1.0 |
24-Aug-2022
|
初始版本 |
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