ospf网络类型
默认接口 特点
1.loopback loopback 32位主机路由
2.point-to-point serial/bri/fr's p2psub-if 组播/无dr
3.brocast ethernet 组播/有dr
4.nbma fr's physical/fr's mpsub-if 单播/有dr
5.p2mp 点到到多点 ------------------ 组播/无dr/32位
6.p2mp nbma 点到多点nbma ------------------单播/无dr/32位
实验:
1.loopback
r1:
int s0
ip add 12.1.1.1 255.255.255.0
no sh
int lo0
ip add 1.1.1.1 255.255.255.0
no sh
r2:
int s0
ip add 12.1.1.2 255.255.255.0
no sh
int lo0
ip add 2.2.2.2 255.255.255.0
r1:
router ospf 110
net 12.1.1.0 0.0.0.255 area 0
net 1.1.1.0 0.0.0.255 area 0
r2:
router ospf 110
net 12.1.1.0 0.0.0.255 area 0
net 1.1.1.0 0.0.0.255 area 0
show ip ospf interface (查看网络类型)
2.point-to-point
int lo0
ip ospf network point-to-point(还原真实的网络信息)
show ip ospf interface
3.brocast
r1:
int s0
ip ospf network broadcast
r2:
int s0
ip ospf network broadcast(广播型网络类型)
4.nbma
r1:
int s0
ip ospf network mon-broadcast
r2:
int s0
ip ospf network mon-broadcast(非广播)
r1:
router ospf 110
neighbor 12.1.1.2 (需要手工指邻居)
hello包时间每30秒周期。
5.p2mp 点到到多点
r1:
int s0
ip ospf network point-to-multipoint
r2:
int s0
ip ospf network point-to-multipoint
hello包时间每30秒周期。
不选dr,组播更新
到达对方32位的主机路由。
6.p2mp nbma 点到多点nbma
不选dr,单播更新,产生32位到达对方主机路由
r1:
int s0
ip ospf network point-to-multipoint non-broadcast
r2:
int s0
ip ospf network point-to-multipoint non-broadcast
网络类型对比
r1:
int s0
ip ospf network point-to-multipoint
r2:
int s0
ip ospf network point-to-point
ip ospf hello-interval 30(更改hello包30秒)
frame-relay:帧中继
1.二层网络技术
2.dlci号(本地意义)
3.基于pvc通道。
4.有连接
5.lmi本地管理接口(cisco/ansi/q933a)
local remote
active 正常 正常
inactive 正常 不正常
delete 不正常 不知道
6.map映射
自动(dynamic)
手工(static)实验:
将router 模拟成fr-switch:
1.将所有串口封装成帧中继。no sh.dce端配时钟
2.r2/r3模拟成fr-switch
3.在帧中继交换机接口指定lmi类型
4.接口帧中继交换机dce
5.接口打开pvc通道
r1:conf t
int s0
encapsulation frame-relay
no sh
r2:
int s0
clock rate 1000
en farme-relay
no sh
int s1
clck rate 1000
encapsulation frame-relay
no sh
r3:
int s0
en frame-relay
no sh
clock rate 1000
r4:
int s1
encapsulation fr
no sh
r5:
int s0
en frame-relay
r2:
frame-relay switching
r3:
frame-relay switching
r2:
int s0
frame-relay lmi-type cisco
cisco
ansi
q933a
frame-relay intf-type dce
frame-relay route 104(进来的dlci号) int s1 401(出去的dlci号)
int s1
frame-relay lmi-type ansi
frame-relay intf-type dce
frame-relay route 401 int ser 0 104
int e0
ip add 23.1.1.2 255.255.255.0
no sh
r3:
int e0
ip add 23.1.1.3 255.255.255.0
no sh
r2:
int tunnel 2
tunnel source 23.1.1.2
tunnel destination 23.1.1.3
r3:
int tunnel 3
tunnel source 23.1.13
tunnel destination 23.1.1.2
r2:
inter s0
frame-relay route 105 interface tunnel 2 100(任意取)
r3:
frame-relay lmi-type q933a
frame-relay intf-type dc
frame-relay route 501 interface tunnel 3 100
r2:
show frame-relay route(查看active没)
r1:
show frame-relay pvc(查看确认pvc好的)int s0
ip add 145.1.1.1 255.255.255.0
no sh
r4:
int s1
ip add 145.1.1.4 255.255.255.0
no sh
r5:
int s0
ip add 145.1.1.5 255.255.255.0
no sh
show frame-relay map
手工写:
r4:
int s1
frame-relay map ip 145.1.1.5 401 broadcast(支持微广播)show frame-relay map
r5:
int s0
frame-relay map 145.1.1.4 501 broadcast
r1:
int s0
frame-relay map ip 145.1.1.104(写静态map ping通自己)
前提:
hub & spoke
spoke端不能互访
实验:
r1:
int lo0
ip add 1.1.1.1 255.255.255.0
no sh
r4:
int lo0
ip add 4.4.4.4 255.255.255.0
no sh
r5:
int lo0
ip add 5.5.5.5 255.255.255.0
r1:
router ospf 110
network 145.1.1.0 0.0.0.255.area 0
net 1.1.1.0 0.0.0.255 area 0
r4:
router ospf 110
net 145.1.1.0 0.0.0.255 area 0
net 4.4.4.0 0.0.0.255 area 0
r5:
router ospf 110
net 145.1.1.0 0.0.0.255 area 0
net 5.5.5.0 0.0.0.255 area 0
不支持广播,手工neighbor邻居
nbma
手工neighbor
手工dr
手工map
r1:
neighbor 145.1.1.4
neighbro 145.1.1.5
int s0
ip ospf priority 2
r4:
int s1
ip ospf priority 0(把优先级设置为0不参与选举)
r5:
int s0
ip ospf priority 0
r4:
int s1
frame-relay map ip 145.1.1.5 401 broadcast
r5:
int s0
frame-relay map ip 145.1.1.4 501 brioadcast
修改为广播测试
自动neighbor
手工dr(hub)
手工map
r1:
int s0
ip ospf network broadcast
r4:
int s1
ip ospf network broadcast
r5:int s0
ip ospf network broadcast
点到多点nbma
需要手工neighbor
无dr
不需要手工map
r1:
int s0
ip ospf network point-to-multipoint non-broadcast
r4:
int s1
ip ospf network point-to-multipoint non-broadcast
r5:
int s0
ip ospf network point-to-multipoint non-broadcast
p2mp
自动neighbor
无dr
无map
p2p子接口
使用自结构
不同网段
双方网络类型一致