NBMA帧中继实验

帧中继配置:

interface Serial1/1
encapsulation frame-relay

封装帧中继
 clock rate 64000
 frame-relay lmi-type q933a

设定本地接口类型为 q933a
 frame-relay intf-type dce

设置接口为 DCE端,必须配置始终速率
 frame-relay route 200 interface Serial1/2 201

设置有200接口来的信息都转发至 s1/2 的201接口
 frame-relay route 300 interface Serial1/3 301  

设置有300接口来的信息都转发至 s1/3 的301接口     
interface Serial1/2
 no ip address
 encapsulation frame-relay
 serial restart-delay 0
 clock rate 64000
 frame-relay lmi-type q933a
 frame-relay intf-type dce
 frame-relay route 201 interface Serial1/1 200 
interface Serial1/3
 no ip address
 encapsulation frame-relay
 clock rate 64000
 frame-relay lmi-type q933a
 frame-relay intf-type dce
 frame-relay route 301 interface Serial1/1 300

 

r1配置:

interface Loopback0
 ip address 1.1.1.1 255.0.0.0        
interface Serial1/1
 ip address 192.168.1.1 255.255.255.0
 encapsulation frame-relay
 ip ospf priority 100

设置本接口的优先级为100,为了让此接口选举为DR
 frame-relay map ip 192.168.1.2 200 broadcast

设置到 192.168.1.2 的信息 由本地接口200 发出
 frame-relay map ip 192.168.1.3 300 broadcast

设置到 192.168.1.3 的信息 由本地接口300 发出
 frame-relay lmi-type q933a

router ospf 100
 network 1.0.0.0 0.255.255.255 area 0
 network 192.168.1.0 0.0.0.255 area 0
 neighbor 192.168.1.2
 neighbor 192.168.1.3

因为不能发送广播,所有运行OSPF协议需要手工设定邻居,192.168.1.2,192.168.1.3

 

r2配置:

interface Loopback0
 ip address 2.2.2.2 255.0.0.0

interface Serial1/2
 ip address 192.168.1.2 255.255.255.0
 encapsulation frame-relay
 ip ospf priority 0

设置本接口的优先级为0,为了让此接口不参与选举DR,BDR
 frame-relay map ip 192.168.1.1 201 broadcast
 frame-relay map ip 192.168.1.3 201 broadcast
 frame-relay lmi-type q933a

router ospf 100
 network 2.0.0.0 0.255.255.255 area 0
 network 192.168.1.0 0.0.0.255 area 0

 neighbor 192.168.1.1

 

r3配置:

interface Loopback0
 ip address 3.3.3.3 255.0.0.0

interface Serial1/3
 ip address 192.168.1.3 255.255.255.0
 encapsulation frame-relay
 ip ospf priority 50

设置本接口的优先级为50,为了让此接口选举为BDR

interface Serial1/3
 ip address 192.168.1.3 255.255.255.0
 encapsulation frame-relay
 ip ospf priority 50
 frame-relay map ip 192.168.1.1 301 broadcast
 frame-relay map ip 192.168.1.2 301 broadcast
 frame-relay lmi-type q933a

router ospf 100
 network 3.0.0.0 0.255.255.255 area 0
 network 192.168.1.0 0.0.0.255 area 0
 neighbor 192.168.1.1

有错误欢迎请指正,谢谢!