2018烽火硝烟——Cisco 6800IA莫名其妙的重启！

时间：2018-01-11 17:38:17 阅读：220 评论：0 收藏：0 [点我收藏+]

标签：switch ann ber 出现 minimum 时间内容 interface minimal

最近几次在用户现场排除故障都发现Cisco 6800IA莫名其妙的重启，查看日志消息如下（这是今天抓取的日志）：

Jan 11 11:27:22: %SATMGR-SW1-5-FABRIC_PORT_DOWN: SDP down on interface Te1/3/8, connected to FEX 101, uplink 52 (reason: SDP timeout)
Jan 11 11:27:22: %SATMGR-SW1-5-FEX_MODULE_OFFLINE: FEX 101, module 1 offline (reason: all fabric links down)
Jan 11 11:27:22: %SATMGR-SW1-5-FABRIC_PORT_DOWN: SDP down on interface Te1/3/7, connected to FEX 101, uplink 51 (reason: SDP timeout)
Jan 11 11:27:22: %OIR-SW1-6-INSREM: Switch 101 Physical Slot 1 - Module Type LINE_CARD removed
Jan 11 03:27:28.115: SW1: %HA_EM-6-LOG: Mandatory.go_fabriclinkstatus.tcl: GOLD EEM TCL policy for TestFEXFabricLinkStatus
Jan 11 11:27:28: %CONST_DIAG-SW1-6-RSL_LINK_DOWN: RSL link on module 3 port 7-8 is down
Jan 11 11:32:06: %SATMGR-SW1-5-FABRIC_PORT_UP: SDP up on interface Te1/3/8, connected to FEX 101, uplink 52
Jan 11 11:32:09: %SATMGR-SW1-5-ONLINE: FEX 101 online
Jan 11 11:32:09: %SATMGR-SW1-5-FEX_MODULE_ONLINE: FEX 101, module 1 online
Jan 11 11:32:09: %OIR-SW1-6-INSREM: Switch 101 Physical Slot 1 - Module Type LINE_CARD inserted
Jan 11 11:32:06.554: %LINK-3-UPDOWN: Interface Port-channel1, changed state to up (FEX-101)
Jan 11 11:32:07: %LINEPROTO-5-UPDOWN: Line protocol on Interface Port-channel1, changed state to up (FEX-101)
Jan 11 11:32:12: %SATMGR-SW1-5-FABRIC_PORT_UP: SDP up on interface Te1/3/7, connected to FEX 101, uplink 51
Jan 11 11:32:24: %DIAG-SW1-6-RUN_MINIMUM: Fex 101 Module 1: Running Minimal Diagnostics...
Jan 11 11:32:24: %DIAG-SW1-6-DIAG_OK: Fex 101 Module 1: Passed Online Diagnostics
Jan 11 11:32:25: %OIR-SW1-6-SP_INSCARD: Card inserted in Switch_number = 101, physical slot 1,interfaces are now online

检查6807XL和6800IA的连接端口、线缆，发现一切正常，检查核心的配置，也并没有发现什么特殊情况。

查看IOS版本，发现设备内的版本相对较老，从设备上线到现在一直没有升级过，难道是软件的BUG？于时决定对系统进行升级！升级步骤在这里不做说明了！

升级完成后一直到今天上午，6800IA都工作正常，没有重启过，然而就在今天中午又重启了一次，见鬼了！

之前问过度娘，可是度娘并没有给出什么有用的线索。没有办法只能去官网碰碰运气，没想到还真让瞎猫碰到了死耗子……下面是官网的一段内容！

C6800/IA: FEX may crash when a host port configured as SPAN destination
CSCuo88038
Description
Symptom:
In Catalyst 6800 / IA setup, when a host port is configured as SPAN destination, it may cause crash / reset the FEX.

Logs reported:
%SATMGR-SW1-5-FABRIC_PORT_DOWN: SDP down on interface , connected to FEX , uplink (reason: link down)
SATMGR-SW1-3-ERR_DUAL_ACTIVE_DETECT_INCAPABLE: channel group is no longer dual-active detection capable

Conditions:
Issue is seen only after configuring the host port as SPAN Destination port

Workaround:
Move the SPAN destination to the parent/controller switch.

上面那段大体意思是说：如果在做端口镜像的时候，把6800IA上的端口做为了目的端口，就会导致6800IA重启。

还真别说，这几次重启之前，我们都在6800IA上做过monitor session。此时心中有一万头小动物跑过……

在这里说明一下，并不是做完monitor session就会重启，今天是做完了一次抓包后，过了一段时间才重启的。

之前有一次同事在现场也是做了抓包操作，然后6800IA重启了，同事还说：不会是我抓包把它抓重启了吧？我说：它还没有那么金贵，不至于……。得了，现在终于知道就是抓包引起的了！6800IA你让我说你啥好？

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