在CISCO 3550上配置fallback bridging

时间:2007-02-07 16:59:04 来源:http://matthewyin.blog.51cto.com 作者:cj231210 点击:次出处:技术无忧

关键字：CISCO 3550

配置fallback bridge.。交换机的f0/1启用三层端口并连接到R1。F0/3和f0/4划分到VLAN 6中并分别连R3和R4。

SWITCH

conf t
ip routing
bridge 1 protocol vlan-bridge                       /*创建一个bridge group
no bridge 1 acquire                                       /*启用交换机停止转发到动态学习到的MAC地址的帧，仅仅转发到井台配置的MAC地址的帧。
int f 0/1
no switchport
ip ad 10.10.10.7 255.255.255.0
no shut
bridge-group 1                                              /*把f0/1加入到group 1中
exit
vlan 6
exit
int range f 0/3 -4
switchport mode access
switchport access vlan 6
exit
int vlan 6
ip ad 10.10.11.7 255.255.255.0
bridge-group 1                                             /*把interface vlan 6加入到group1中
exit
bridge 1 aging-time 100                            /*设置age time为100s, default 300s
bridge 1 hello-time 3                                  /*设置hello time 为3s, defautl:2
bridge 1 max-age 150                               /*设置max time 为150 s , default 30
bridge 1 forward-time 50                          /*设置forward time 为50s，default: 20
bridge 1 address 0000.9614.53e0 forward f0/1 /*静态配置转发缓存

bridge 1 priority 100 /*设置group的优先级

校验

sw1#sh span

Bridge group 1
Spanning tree enabled protocol vlan-bridge
Root ID    Priority    100
             Address     0013.1ab4.fe00
             This bridge is the root
             Hello Time   3 sec Max Age 150 sec Forward Delay 50 sec

Bridge ID Priority    100
             Address     0013.1ab4.fe00
             Hello Time   3 sec Max Age 150 sec Forward Delay 50 sec
             Aging Time 100

Interface        Role Sts Cost      Prio.Nbr Type
---------------- ---- --- --------- -------- --------------------------------
Fa0/1            Desg FWD 500        32.35   P2p
Vl6              Desg FWD 4         128.36   P2p

sw1#sh bridge 1
Br Group    Mac Address       State      Type        Ports
--------    -----------       -----      ----        -----
   1        0000.9614.53e0    Forward    STATIC      Fa0/1

show bridge 1下面还有一些条目，因为使用了no bridge 1 acquire命令，状态被置为discard。这里就不再贴上了

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