【文章內(nèi)容簡(jiǎn)介】 60。 Path cost to root bridge is 180Port 1 (Ethernet0/1) of bridge is Forwarding Spanning tree protocol is enabled The port is a RootPort Port path cost 180 Port priority 128 Designated bridge has priority 32768, MAC address Configured as a nonedge port Connected to a pointtopoint LAN segment Maximum transmission limit is 3 BPDUs per hello time Times: Hello Time 2, Max Age 20 Forward Delay 15, Message Age 0 sent BPDU: 9 TCN: 0, RST: 9, Config BPDU: 0 received BPDU: 3903 TCN: 0, RST: 3903, Config BPDU: 0你可以通過(guò)觀察所有這些端口的信息來(lái)描述這棵生成樹(shù)。還可以用“debug stp packet”命令來(lái)進(jìn)一步觀察STP生成的BPDU信息：以下是debug信息：SwitchAdebug stp packetSwitchAterminal debug*:Port0: Sent Packet*:Protocol Identifier: 0000Protocol Version ID: 02BPDU Type: 02Flags: 2cRoot Identifier: Root Path Cost: 0000Bridge Identifier: Port Identifier: Message Age: 0000Max Age: 1400Hello Time: 0200Forward Delay: 0f00Version 1 Length: 00改變交換機(jī)的一些配置參數(shù)，例如priority、path cost、hello time、max age、forward delay、bridge diameter。然后用上面的命令觀察生成樹(shù)的變化。用“show interface”命令觀察每臺(tái)交換機(jī)上trunk端口的VLAN注冊(cè)狀態(tài)。下面是GVRP注冊(cè)狀態(tài)的結(jié)果：SwitchC(config)show interface e0/10Ethernet0/10 is upHardware is Fast Ethernet, Hardware address is Autoduplex(Full), Autospeed(100M), 100_BASE_TXFlow control is disabledBroadcast maxratio is 100PVID is 1Mdi type: autoIt is a vlan trunking port, vlan(s) passing this port: 1(default vlan), 23vlan(s) allowed to pass this port: 1(default vlan), 24000It is not a monitor portIt doesn\39。t belong to a portaggregation28287 packets output 2210677 bytes, 13133 multicasts, 241 broadcasts, 0 pauses17511 packets input 1504252 bytes, 2373 multicasts, 240 broadcasts, 0 pauses0 FCS errors0 long framesSwitchC(config)show interface e0/9Ethernet0/9 is upHardware is Fast Ethernet, Hardware address is Autoduplex(Full), Autospeed(100M), 100_BASE_TXFlow control is disabledBroadcast maxratio is 100PVID is 1Mdi type: autoIt is a vlan trunking port, vlan(s) passing this port: 1(default vlan), 2, 4vlan(s) allowed to pass this port: 1(default vlan), 24000It is not a monitor portIt doesn\39。t belong to a portaggregation27603 packets output 2182362 bytes, 12321 multicasts, 357 broadcasts, 0 pauses18249 packets input 1537891 bytes, 3171 multicasts, 126 broadcasts, 0 pauses0 FCS errors0 long frames在SwitchB上注冊(cè)VLAN610，在SwitchD上注冊(cè)VLAN1115，在SwitchE上注冊(cè)VLAN1620。用“show interface”命令和“show vlan”命令來(lái)觀察每個(gè)trunk端口的VLAN注冊(cè)狀態(tài)。復(fù)習(xí)GVRP原理并說(shuō)明原因。，配置VLAN4的接口地址為 。試 著在PC機(jī)之間互相Ping，看是否能Ping通。然后在SwitchA上配置ACL來(lái)限制VLAN2和VLAN3內(nèi)的PC機(jī)相互通信。并在RouterA和SwitchA上啟動(dòng)OSPF。試著在任意一臺(tái)PC上PingRouterA接口S0的IP地址，測(cè)試PC機(jī)和RouterA之間的通信。用“show ip route”命令來(lái)觀察OSPF路由。配置如下：SwitchAshow runningconfigBuilding running configuration...Current configuration is :!hostname SwitchArulemap l3 net1tonet2 flowaction net1tonet2 deny acl net1tonet2 net1tonet2 net1tonet2accessgroup net1tonet2spanningtree enablelinkaggregation Ethernet0/1 to Ethernet0/2 ingressegresslinkaggregation Ethernet0/9 to Ethernet0/10 ingressegressgvrp enable!interface Aux0/0!vlan 1!vlan 2!vlan 3!vlan 4!interface Ethernet0/1 作者：admin 發(fā)布時(shí)間：2005418 9:51:18trunk allgvrp enable!interface Ethernet0/10trunk allgvrp enable!interface Ethernet0/11………………..interface Ethernet0/2trunk allgvrp enable!……………!interface Ethernet0/9trunk allgvrp enable!interface NULL0!interface VLANInterface1ip address !interface VLANInterface2ip address !interface VLANInterface3ip address !interface VLANInterface4ip address !!router ospfnetwork area network area network area network area !!!line aux 0no loginline vty 0 4!endRouterAshow runningconfig Now create configuration... Current configuration ! hostname RouterA ! interface Ethernet0 ip address ip ospf enable area ! interface Serial0 encapsulation ppp ! interface Serial1 encapsulation ppp ! interface Serial2 flowcontrol normal async mode dedicated encapsulation ppp ! exit router ospf enable ! end RouterAshow ip routeRouting Tables: Destination/Mask Proto Pref Metric Nexthop Interface OSPF 10 20 Ethernet0 OSPF 10 20 Ethernet0 OSPF 10 20 Ethernet0 Static 0 0 LoopBack0 Direct 0 0 LoopBack0 Direct 0 0 Ethernet0 Direct 0 0 LoopBack0在每臺(tái)交換機(jī)和RouterA上配置enable password和line login password，觀察他們能否相互Ping通，并試著從PC機(jī)和交換機(jī)上telnet到交換機(jī)或RouterA上。 作者：admin 發(fā)布時(shí)間：2005418 9:51:57你可以將每臺(tái)交換機(jī)的VLAN1接口配置如下：SwitchA的VLAN1接口：SwitchB的VLAN1接口：SwitchC的VLAN1接口：SwitchD的VLAN1接口：SwitchE的VLAN1接口：以下是SwitchA的配置，其余交換機(jī)的配置也是類似的：SwitchAshow runningconfigBuilding running configuration...Current co