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  3. 思科EEM不会烧毁所有步骤
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思科EEM不会烧毁所有步骤

我有一个Cisco 887作为我们的主要路由器; 它被configuration为双栈。 尽pipe我们的ISP的IPv6configuration有一个小的“捕获” 在build立连接之后，我们必须为我们的前缀委派执行一个DHCPv6，告诉ISP的networking在哪里路由我们的assign / 56。

这工作正常，除非连接断开并恢复： 

Feb 5 08:54:15.194 ACST: Vi2 LCP: I TERMREQ [Open] id 3 len 4 Feb 5 08:54:15.194 ACST: Vi2 PPP DISC: Received LCP TERMREQ from peer Feb 5 08:54:15.194 ACST: PPP: NET STOP send to AAA. Feb 5 08:54:15.194 ACST: Vi2 PPP: Phase is TERMINATING

这对于IPv4来说并不是问题（仅需要3秒钟才能恢复，而且不常见），但是对于IPv6，思科无法发送新的PD请求，这意味着IPv6会停止路由，直到思科决定是时候发送另一个PD请求。

我们的ISP已经确定了这个问题，并且写了一个EEM来处理这个情况（解决方法，但是不过）。 参考[1]。 我们在887有EEM： 

 event manager applet MONITOR-IPV6-DHCP-APP event syslog pattern "DIALER-6-BIND" action 1.0 cli command "enable" action 1.1 cli command "clear ipv6 dhcp client Dialer1" action 2.0 syslog priority debugging msg "Refreshed IPv6 DHCP PD lease (Dialer rebind)" !

但是只有第一个命令（'enable'）似乎被执行： 

 Feb 5 08:54:15.194 ACST: Vi2 LCP: I TERMREQ [Open] id 3 len 4 Feb 5 08:54:15.194 ACST: Vi2 PPP DISC: Received LCP TERMREQ from peer Feb 5 08:54:15.194 ACST: PPP: NET STOP send to AAA. Feb 5 08:54:15.194 ACST: Vi2 PPP: Phase is TERMINATING Feb 5 08:54:15.194 ACST: Vi2 IPCP: Event[DOWN] State[Open to Starting] Feb 5 08:54:15.194 ACST: Vi2 IPCP: Event[CLOSE] State[Starting to Initial] Feb 5 08:54:15.198 ACST: Vi2 IPV6CP: Event[DOWN] State[Open to Starting] Feb 5 08:54:15.198 ACST: Vi2 IPV6CP: Event[CLOSE] State[Starting to Initial] Feb 5 08:54:15.198 ACST: Vi2 LCP: O TERMACK [Open] id 3 len 4 Feb 5 08:54:15.198 ACST: Vi2 LCP: Event[Receive TermReq] State[Open to Stopping] Feb 5 08:54:15.198 ACST: Di1 Deleted neighbor route from AVL tree: topoid 0, address 150.101.xxx.xxx Feb 5 08:54:15.198 ACST: Di1 IPCP: Remove route to 150.101.212.45 Feb 5 08:54:16.110 ACST: Vi2 PPP: Outbound ip packet dropped, line protocol not up Feb 5 08:54:17.182 ACST: Vi2 PPP: No remote authentication for call-out Feb 5 08:54:17.182 ACST: Vi2 LCP: Event[Timeout-] State[Stopping to Stopped] Feb 5 08:54:17.182 ACST: Vi2 LCP: Event[DOWN] State[Stopped to Starting] Feb 5 08:54:17.182 ACST: Vi2 PPP: Phase is DOWN Feb 5 08:54:17.186 ACST: %LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-Access2, changed state to down Feb 5 08:54:18.182 ACST: PPP: Alloc Context [85878D10] Feb 5 08:54:18.182 ACST: ppp13 PPP: Phase is ESTABLISHING Feb 5 08:54:18.182 ACST: Vi2 PPP: Using dialer call direction Feb 5 08:54:18.182 ACST: Vi2 PPP: Treating connection as a callout Feb 5 08:54:18.182 ACST: Vi2 PPP: Session handle[B3000015] Session id[13] Feb 5 08:54:18.182 ACST: Vi2 LCP: Event[OPEN] State[Initial to Starting] Feb 5 08:54:18.182 ACST: Vi2 PPP: No remote authentication for call-out Feb 5 08:54:18.182 ACST: Vi2 LCP: O CONFREQ [Starting] id 1 len 10 Feb 5 08:54:18.182 ACST: Vi2 LCP: MagicNumber 0x3640E9BC (0x05063640E9BC) Feb 5 08:54:18.182 ACST: Vi2 LCP: Event[UP] State[Starting to REQsent] Feb 5 08:54:18.234 ACST: Vi2 PPP: Outbound ip packet dropped, line protocol not up Feb 5 08:54:18.378 ACST: Vi2 LCP: I CONFREQ [REQsent] id 83 len 15 Feb 5 08:54:18.378 ACST: Vi2 LCP: AuthProto CHAP (0x0305C22305) Feb 5 08:54:18.378 ACST: Vi2 LCP: MagicNumber 0x36FC641E (0x050636FC641E) Feb 5 08:54:18.378 ACST: Vi2 LCP: O CONFACK [REQsent] id 83 len 15 Feb 5 08:54:18.378 ACST: Vi2 LCP: AuthProto CHAP (0x0305C22305) Feb 5 08:54:18.378 ACST: Vi2 LCP: MagicNumber 0x36FC641E (0x050636FC641E) Feb 5 08:54:18.378 ACST: Vi2 LCP: Event[Receive ConfReq+] State[REQsent to ACKsent] Feb 5 08:54:18.378 ACST: Vi2 LCP: I CONFACK [ACKsent] id 1 len 10 Feb 5 08:54:18.378 ACST: Vi2 LCP: MagicNumber 0x3640E9BC (0x05063640E9BC) Feb 5 08:54:18.378 ACST: Vi2 LCP: Event[Receive ConfAck] State[ACKsent to Open] Feb 5 08:54:18.398 ACST: Vi2 PPP: Phase is AUTHENTICATING, by the peer Feb 5 08:54:18.398 ACST: Vi2 LCP: State is Open Feb 5 08:54:18.398 ACST: Vi2 CHAP: I CHALLENGE id 140 len 33 from "vwzp-windsor" Feb 5 08:54:18.398 ACST: Vi2 CHAP: Using hostname from interface CHAP Feb 5 08:54:18.398 ACST: Vi2 CHAP: Using password from interface CHAP Feb 5 08:54:18.398 ACST: Vi2 CHAP: O RESPONSE id 140 len 59 from "[email protected]" Feb 5 08:54:18.682 ACST: Vi2 LCP: I CONFREQ [Open] id 1 len 19 Feb 5 08:54:18.682 ACST: Vi2 LCP: MRU 1492 (0x010405D4) Feb 5 08:54:18.682 ACST: Vi2 LCP: AuthProto CHAP (0x0305C22305) Feb 5 08:54:18.682 ACST: Vi2 LCP: MagicNumber 0xA38A8FBC (0x0506A38A8FBC) Feb 5 08:54:18.682 ACST: Vi2 PPP DISC: PPP Renegotiating Feb 5 08:54:18.682 ACST: PPP: NET STOP send to AAA. Feb 5 08:54:18.686 ACST: Vi2 LCP: Event[LCP Reneg] State[Open to Open] Feb 5 08:54:18.686 ACST: Vi2 LCP: Event[DOWN] State[Open to Starting] Feb 5 08:54:18.686 ACST: Vi2 PPP: Phase is DOWN Feb 5 08:54:18.686 ACST: PPP: Alloc Context [85878B48] Feb 5 08:54:18.686 ACST: ppp13 PPP: Phase is ESTABLISHING Feb 5 08:54:18.686 ACST: Vi2 PPP: Using dialer call direction Feb 5 08:54:18.690 ACST: Vi2 PPP: Treating connection as a callout Feb 5 08:54:18.690 ACST: Vi2 PPP: Session handle[59000016] Session id[13] Feb 5 08:54:18.690 ACST: Vi2 LCP: Event[OPEN] State[Initial to Starting] Feb 5 08:54:18.690 ACST: Vi2 PPP: No remote authentication for call-out Feb 5 08:54:18.690 ACST: Vi2 LCP: O CONFREQ [Starting] id 1 len 10 Feb 5 08:54:18.690 ACST: Vi2 LCP: MagicNumber 0x3640EBB9 (0x05063640EBB9) Feb 5 08:54:18.690 ACST: Vi2 LCP: Event[UP] State[Starting to REQsent] Feb 5 08:54:18.690 ACST: Vi2 LCP: I CONFREQ [REQsent] id 1 len 19 Feb 5 08:54:18.690 ACST: Vi2 LCP: MRU 1492 (0x010405D4) Feb 5 08:54:18.690 ACST: Vi2 LCP: AuthProto CHAP (0x0305C22305) Feb 5 08:54:18.690 ACST: Vi2 LCP: MagicNumber 0xA38A8FBC (0x0506A38A8FBC) Feb 5 08:54:18.690 ACST: Vi2 LCP: O CONFNAK [REQsent] id 1 len 8 Feb 5 08:54:18.690 ACST: Vi2 LCP: MRU 1500 (0x010405DC) Feb 5 08:54:18.690 ACST: Vi2 LCP: Event[Receive ConfReq-] State[REQsent to REQsent] Feb 5 08:54:18.710 ACST: Vi2 LCP: I CONFACK [REQsent] id 1 len 10 Feb 5 08:54:18.710 ACST: Vi2 LCP: MagicNumber 0x3640EBB9 (0x05063640EBB9) Feb 5 08:54:18.710 ACST: Vi2 LCP: Event[Receive ConfAck] State[REQsent to ACKrcvd] Feb 5 08:54:18.710 ACST: Vi2 LCP: I CONFREQ [ACKrcvd] id 2 len 19 Feb 5 08:54:18.710 ACST: Vi2 LCP: MRU 1500 (0x010405DC) Feb 5 08:54:18.710 ACST: Vi2 LCP: AuthProto CHAP (0x0305C22305) Feb 5 08:54:18.710 ACST: Vi2 LCP: MagicNumber 0xA38A8FBC (0x0506A38A8FBC) Feb 5 08:54:18.710 ACST: Vi2 LCP: O CONFACK [ACKrcvd] id 2 len 19 Feb 5 08:54:18.710 ACST: Vi2 LCP: MRU 1500 (0x010405DC) Feb 5 08:54:18.710 ACST: Vi2 LCP: AuthProto CHAP (0x0305C22305) Feb 5 08:54:18.710 ACST: Vi2 LCP: MagicNumber 0xA38A8FBC (0x0506A38A8FBC) Feb 5 08:54:18.710 ACST: Vi2 LCP: Event[Receive ConfReq+] State[ACKrcvd to Open] Feb 5 08:54:18.718 ACST: Vi2 PPP: Phase is AUTHENTICATING, by the peer Feb 5 08:54:18.718 ACST: Vi2 LCP: State is Open Feb 5 08:54:18.758 ACST: Vi2 CHAP: I CHALLENGE id 141 len 31 from "lns20.mel4" Feb 5 08:54:18.758 ACST: Vi2 CHAP: Using hostname from interface CHAP Feb 5 08:54:18.758 ACST: Vi2 CHAP: Using password from interface CHAP Feb 5 08:54:18.758 ACST: Vi2 CHAP: O RESPONSE id 141 len 59 from "[email protected]" Feb 5 08:54:18.926 ACST: Vi2 CHAP: I SUCCESS id 141 len 4 Feb 5 08:54:18.926 ACST: Vi2 PPP: Phase is FORWARDING, Attempting Forward Feb 5 08:54:18.926 ACST: Vi2 PPP: Queue IPCP code[1] id[1] Feb 5 08:54:18.930 ACST: Vi2 PPP: Phase is ESTABLISHING, Finish LCP Feb 5 08:54:18.930 ACST: Vi2 PPP: Phase is UP Feb 5 08:54:18.930 ACST: Vi2 IPCP: Protocol configured, start CP. state[Initial] Feb 5 08:54:18.930 ACST: Vi2 IPCP: Event[OPEN] State[Initial to Starting] Feb 5 08:54:18.930 ACST: Vi2 IPCP: O CONFREQ [Starting] id 1 len 10 Feb 5 08:54:18.930 ACST: Vi2 IPCP: Address 0.0.0.0 (0x030600000000) Feb 5 08:54:18.930 ACST: Vi2 IPCP: Event[UP] State[Starting to REQsent] Feb 5 08:54:18.930 ACST: Vi2 IPV6CP: Protocol configured, start CP. state[Initial] Feb 5 08:54:18.930 ACST: Vi2 IPV6CP: Event[OPEN] State[Initial to Starting] Feb 5 08:54:18.930 ACST: Vi2 IPV6CP: O CONFREQ [Starting] id 1 len 14 Feb 5 08:54:18.930 ACST: Vi2 IPV6CP: Interface-Id CEEF:48FF:xxxx:xxxx (0x010ACEEF48FFxxxxxxxx) Feb 5 08:54:18.930 ACST: Vi2 IPV6CP: Event[UP] State[Starting to REQsent] Feb 5 08:54:18.930 ACST: Vi2 PPP: Process pending ncp packets Feb 5 08:54:18.930 ACST: Vi2 IPCP: Redirect packet to Vi2 Feb 5 08:54:18.930 ACST: Vi2 IPCP: I CONFREQ [REQsent] id 1 len 10 Feb 5 08:54:18.930 ACST: Vi2 IPCP: Address 150.101.xxx.xxx (0x03069665D42C) Feb 5 08:54:18.930 ACST: Vi2 IPCP: O CONFACK [REQsent] id 1 len 10 Feb 5 08:54:18.930 ACST: Vi2 IPCP: Address 150.101.xxx.xxx (0x03069665D42C) Feb 5 08:54:18.930 ACST: Vi2 IPCP: Event[Receive ConfReq+] State[REQsent to ACKsent] Feb 5 08:54:18.934 ACST: %LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-Access2, changed state to up Feb 5 08:54:18.950 ACST: Vi2 IPCP: I CONFNAK [ACKsent] id 1 len 10 Feb 5 08:54:18.950 ACST: Vi2 IPCP: Address 59.167.xxx.xxx (0x03063BA7B47D) Feb 5 08:54:18.950 ACST: Vi2 IPCP: O CONFREQ [ACKsent] id 2 len 10 Feb 5 08:54:18.950 ACST: Vi2 IPCP: Address 59.167.xxx.xxx (0x03063BA7B47D) Feb 5 08:54:18.950 ACST: Vi2 IPCP: Event[Receive ConfNak/Rej] State[ACKsent to ACKsent] Feb 5 08:54:18.950 ACST: Vi2 IPV6CP: I CONFREQ [REQsent] id 1 len 14 Feb 5 08:54:18.950 ACST: Vi2 IPV6CP: Interface-Id 0224:14FF:FE9A:9A00 (0x010A022414FFFE9A9A00) Feb 5 08:54:18.950 ACST: Vi2 IPV6CP: O CONFACK [REQsent] id 1 len 14 Feb 5 08:54:18.950 ACST: Vi2 IPV6CP: Interface-Id 0224:14FF:FE9A:9A00 (0x010A022414FFFE9A9A00) Feb 5 08:54:18.950 ACST: Vi2 IPV6CP: Event[Receive ConfReq+] State[REQsent to ACKsent] Feb 5 08:54:18.950 ACST: Vi2 IPV6CP: I CONFACK [ACKsent] id 1 len 14 Feb 5 08:54:18.950 ACST: Vi2 IPV6CP: Interface-Id CEEF:48FF:xxxx:xxxx (0x010ACEEF48FFxxxxxxxx) Feb 5 08:54:18.950 ACST: Vi2 IPV6CP: Event[Receive ConfAck] State[ACKsent to Open] Feb 5 08:54:18.970 ACST: Vi2 IPCP: I CONFACK [ACKsent] id 2 len 10 Feb 5 08:54:18.970 ACST: Vi2 IPCP: Address 59.167.xxx.xxx (0x03063BA7B47D) Feb 5 08:54:18.970 ACST: Vi2 IPCP: Event[Receive ConfAck] State[ACKsent to Open] Feb 5 08:54:18.974 ACST: Vi2 IPV6CP: State is Open Feb 5 08:54:18.974 ACST: Vi2 IPCP: State is Open Feb 5 08:54:18.974 ACST: Vi2 DDR: dialer protocol up Feb 5 08:54:18.974 ACST: Di1 IPCP: Install negotiated IP interface address 59.167.xxx.xxx Feb 5 08:54:18.974 ACST: Di1 Added to neighbor route AVL tree: topoid 0, address 150.101.xxx.xxx Feb 5 08:54:18.978 ACST: Di1 IPCP: Install route to 150.101.xxx.xxx Feb 5 08:54:18.978 ACST: Vi2 DDR: dialer protocol up Feb 5 08:59:18.342 ACST: %PARSER-5-CFGLOG_LOGGEDCMD: User:admin logged command:!exec: enable

清除Dialer1上的DHCP客户端和syslog命令的（重要的）部分不会发生。 我已经和ISP谈过了，他们“不支持”思科，尽pipe我们从他们那里购买了路由器，并且他们进行了初始configuration。

[1] http://www.internode.on.net/support/guides/internet_access/ipv6/cisco_routers/

从日志中看，EEM脚本看起来并没有被执行。

它等待一个string， DIALER-6-BIND ，似乎没有出现。 但是，您可以修改EEM脚本以匹配此日志行： 

 %LINEPROTO-5-UPDOWN: Line protocol on Interface Virtual-Access2, changed state to up

EEM脚本将如下所示： 

 event manager applet MONITOR-IPV6-DHCP-APP event syslog pattern "Virtual-Access2, changed state to up" action 1.0 cli command "enable" action 1.1 cli command "clear ipv6 dhcp client Dialer1" action 2.0 syslog priority debugging msg "Refreshed IPv6 DHCP PD lease (Dialer rebind)"