813 GLBP求助

godream

GLBP has been configured on the network. When the interface serial0/0/1 on router R1 goes down, how is
the traffic coming from Host1 handled?
A. The traffic coming from Host1 and Host2 is forwarded through router R2 with no disruption.
B. The traffic coming from Host2 is forwarded through router R2 with no disruption. Host1 sends an ARP
request to resolve the MAC address for the new virtual gateway.
C. The traffic coming from both hosts is temporarily interrupted while the switchover to make R2 active
occurs.
D. The traffic coming from Host2 is forwarded through router R2 with no disruption. The traffic from Host1
is dropped due to the disruption of the load balancing feature configured for the GLBP group.
Answer: A

求亲们讲解下，R1优先级是110，端口shutdown了下降到100，没有到95，为什么就不能成为AVF了呢？谢了！

godream

有人没的哦，求解释啊！

ffppzz

很简单啊，权重减10后，R1的FA0/0口依然是AVF，但是，因为R1的上行链路断了.思考一下，这种情况R1的AVG会做什么呢 ？它会把VMAC地址发给R2来替它转发流量，所以HOST1和HOST2发给R1的流量。最终会被R2来转发！！！所以答案是A

godream

ffppzz 发表于 2013-1-11 20:17
很简单啊，权重减10后，R1的FA0/0口依然是AVF，但是，因为R1的上行链路断了.思考一下，这种情况R1的AVG会做 ...

那这样的话，我们还用减少优先级来使R1不转发流量么？ 直接检查上行链路得了，断了直接放弃转发。
话说R1现在还是AVF，意思是它还要转发流量，如果他不转发流量了，那就不是AVF了，但是现在它符合AVF的条件，却因为上行链路短了，它就会放弃AVF角色?

唯爱

316098438

现在是R1的 s0/0/1 down了 R2接替成为AVG

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