2011.11.2 try
(TRY)
进展：
section 3 ipv6组播 做完，比较简单。
section 4 高级特性，进行中
问题注：
1）这一部分的验证需要搭建一些外部环境，并将设备桥接到网卡，
2）具体需要搭建的外部环境是：
桥接虚拟网络到网卡
radius server，
tacacs+ server
3）4。2部分没有外部环境敲入会导致链路down，可以暂时跳过。
4）搭建桥接并不难，只是需要一些时间测试验证。搭建外部服务器软件，没有可供参考的验证过的详细步骤之前可能 需要更多的测试时间，没有时间和条件的话可以先掠过，平时工作中留意这方面。
明日计划：
v1基本做完。周五做备份保证周六前全部做完。
周末回头仔细验证v1以及手边其他事情
附录组播效果：
4#ping ff08::4000:4000 repeat 10
~ 3249 Output Interface: f0/1
~ 3250 % Invalid interface. Use full interface name without spaces (e.g. Serial0/1)
~ 3251 Output Interface: fastethernet0/1.24
~ 3252 Type escape sequence to abort.
~ 3253 Sending 10, 100-byte ICMP Echos to FF08::4000:4000, timeout is 2 seconds:
~ 3254 Packet sent with a source address of FC01:DB8:74:9:C2AF:38FF:FE1C:1
~ 3255
~ 3256 Reply to request 0 received from FC01:DB8:74:A:C2B0:38FF:FE1C:0, 168 ms
~ 3257 Reply to request 1 received from FC01:DB8:74:A:C2B0:38FF:FE1C:0, 44 ms
~ 3258 Reply to request 2 received from FC01:DB8:74:A:C2B0:38FF:FE1C:0, 48 ms
~ 3259 Reply to request 3 received from FC01:DB8:74:A:C2B0:38FF:FE1C:0, 8 ms
~ 3260 Reply to request 4 received from FC01:DB8:74:A:C2B0:38FF:FE1C:0, 20 ms
~ 3261 Reply to request 5 received from FC01:DB8:74:A:C2B0:38FF:FE1C:0, 48 ms
~ 3262 Reply to request 6 received from FC01:DB8:74:A:C2B0:38FF:FE1C:0, 44 ms
~ 3263 Reply to request 7 received from FC01:DB8:74:A:C2B0:38FF:FE1C:0, 16 ms
~ 3264 Reply to request 8 received from FC01:DB8:74:A:C2B0:38FF:FE1C:0, 24 ms
~ 3265 Reply to request 9 received from FC01:DB8:74:A:C2B0:38FF:FE1C:0, 28 ms
~ 3266 Success rate is 100 percent (10/10), round-trip min/avg/max = 8/44/168 ms
~ 3267 10 multicast replies and 0 errors.