OSPF NBMA实验（单播广播）
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在帧中继下ospf网络类型默认为NBMA，不支持广播（其实指的是组播，因为ospf是通过组播来发送数据的），只支持单播。
以下实验是在帧中继下既能使ospf网络类型支持默认单播，又通过修改网络类型手段支持广播（其实指的组播，因为ospf是通过组播来发送报文的）。
以下我们第一种方式使用默认单播方式做的实验，第二种实验采用广播方式（既然你不支持广播，那么我让你支持广播【其实指的组播，因为ospf是通过组播来发送报文的】不就行了？）
（两个实验帧中继map表相同）
第一种，采用默认单播方式，需要手动指定peer
R1
[Huawei]dis cur conf ospf
[V200R003C00]
#
ospf 1
peer 10.1.123.2
peer 10.1.123.3
area 0.0.0.0
network 10.1.123.0 0.0.0.255
network 11.1.1.1 0.0.0.0
#
return
[Huawei]dis cur inter
[Huawei]dis cur interface s 1/0/0
[V200R003C00]
#
interface Serial1/0/0
link-protocol fr （s口默认为ppp，也就是p2p网络类型。因此需要修改成fr）
fr map ip 10.1.123.2 102
fr map ip 10.1.123.3 103
ip address 10.1.123.1 255.255.255.0
[Huawei]dis ospf inter s 1/0/0
OSPF Process 1 with Router ID 11.1.1.1
Interfaces
Interface: 10.1.123.1 (Serial1/0/0)（要选择DR、BDR、DROther）
Cost: 48 State: DROther Type: NBMA MTU: 1500
Priority: 1
Designated Router: 10.1.123.3
Backup Designated Router: 10.1.123.2
Timers: Hello 30 , Dead 120 , Poll 120 , Retransmit 5 , Transmit Delay 1
[Huawei]dis ospf peer bri
OSPF Process 1 with Router ID 11.1.1.1
Peer Statistic Information
----------------------------------------------------------------------------
Area Id Interface Neighbor id State
0.0.0.0 Serial1/0/0 22.1.1.1 Full
0.0.0.0 Serial1/0/0 33.1.1.1 Full
----------------------------------------------------------------------------
R2
[Huawei]dis cu conf ospf
[V200R003C00]
#
ospf 1
peer 10.1.123.1
peer 10.1.123.3
area 0.0.0.0
network 10.1.123.0 0.0.0.255
network 22.1.1.1 0.0.0.0
#
return
[Huawei]dis cu inter s 1/0/0
[V200R003C00]
#
interface Serial1/0/0
link-protocol fr
fr map ip 10.1.123.1 201
fr map ip 10.1.123.3 203
ip address 10.1.123.2 255.255.255.0
[Huawei]dis ospf inter s 1/0/0
OSPF Process 1 with Router ID 22.1.1.1
Interfaces
Interface: 10.1.123.2 (Serial1/0/0)
Cost: 48 State: BDR Type: NBMA MTU: 1500
Priority: 1
Designated Router: 10.1.123.3
Backup Designated Router: 10.1.123.2
Timers: Hello 30 , Dead 120 , Poll 120 , Retransmit 5 , Transmit Delay 1
[Huawei]
[Huawei]
[Huawei]dis ospf peer bri
OSPF Process 1 with Router ID 22.1.1.1
Peer Statistic Information
----------------------------------------------------------------------------
Area Id Interface Neighbor id State
0.0.0.0 Serial1/0/0 11.1.1.1 Full
0.0.0.0 Serial1/0/0 33.1.1.1 Full
----------------------------------------------------------------------------
R3
[Huawei-ospf-1]dis cu conf ospf
[V200R003C00]
#
ospf 1
peer 10.1.123.1
peer 10.1.123.2
area 0.0.0.0
network 10.1.123.0 0.0.0.255
network 33.1.1.1 0.0.0.0
#
return
[Huawei-ospf-1]dis cu int s 1/0/0
[V200R003C00]
#
interface Serial1/0/0
link-protocol fr
fr map ip 10.1.123.1 301
fr map ip 10.1.123.2 302
ip address 10.1.123.3 255.255.255.0
#
[Huawei]dis ospf inter s 1/0/0
OSPF Process 1 with Router ID 33.1.1.1
Interfaces
Interface: 10.1.123.3 (Serial1/0/0)
Cost: 48 State: DR Type: NBMA MTU: 1500
Priority: 1
Designated Router: 10.1.123.3
Backup Designated Router: 10.1.123.2
Timers: Hello 30 , Dead 120 , Poll 120 , Retransmit 5 , Transmit Delay 1
[Huawei]dis ospf peer bri
OSPF Process 1 with Router ID 33.1.1.1
Peer Statistic Information
----------------------------------------------------------------------------
Area Id Interface Neighbor id State
0.0.0.0 Serial1/0/0 11.1.1.1 Full
0.0.0.0 Serial1/0/0 22.1.1.1 Full
----------------------------------------------------------------------------
第二种，NBMA默认不支持广播（其实指的是组播），那么我就要让你支持广播方式（均不需指定peer），具体实验如下：
R1：
[Huawei]dis cur conf ospf
[V200R003C00]
#
ospf 1
area 0.0.0.0
network 10.1.123.0 0.0.0.255
network 11.1.1.1 0.0.0.0
#
return
[Huawei]dis current-configuration interface s1/0/0
[V200R003C00]
#
interface Serial1/0/0
link-protocol fr
fr map ip 10.1.123.2 102 broadcast （建立帧中继map支持广播表？）
fr map ip 10.1.123.3 103 broadcast
ip address 10.1.123.1 255.255.255.0
ospf network-type broadcast （网络类型修改）
#
return
[Huawei]dis ospf interface Serial 1/0/0
OSPF Process 1 with Router ID 11.1.1.1
Interfaces
Interface: 10.1.123.1 (Serial1/0/0)
Cost: 48 State: BDR Type: Broadcast MTU: 1500
Priority: 1
Designated Router: 10.1.123.3
Backup Designated Router: 10.1.123.1
Timers: Hello 10 , Dead 40 , Poll 120 , Retransmit 5 , Transmit Delay 1
[Huawei]dis ospf peer bri
OSPF Process 1 with Router ID 11.1.1.1
Peer Statistic Information
----------------------------------------------------------------------------
Area Id Interface Neighbor id State
0.0.0.0 Serial1/0/0 22.1.1.1 Full
0.0.0.0 Serial1/0/0 33.1.1.1 Full
----------------------------------------------------------------------------
R2：
[Huawei]dis cu conf ospf
[V200R003C00]
#
ospf 1
area 0.0.0.0
network 10.1.123.0 0.0.0.255
network 22.1.1.1 0.0.0.0
#
return
[Huawei]dis cu interface s 1/0/0
[V200R003C00]
#
interface Serial1/0/0
link-protocol fr
fr map ip 10.1.123.1 201 broadcast
fr map ip 10.1.123.3 203 broadcast
ip address 10.1.123.2 255.255.255.0
ospf network-type broadcast
#
return
[Huawei]dis ospf inter
[Huawei]dis ospf interface s1/0/0
OSPF Process 1 with Router ID 22.1.1.1
Interfaces
Interface: 10.1.123.2 (Serial1/0/0)
Cost: 48 State: DROther Type: Broadcast MTU: 1500
Priority: 1
Designated Router: 10.1.123.3
Backup Designated Router: 10.1.123.1
Timers: Hello 10 , Dead 40 , Poll 120 , Retransmit 5 , Transmit Delay 1
[Huawei]dis ospf peer bri
OSPF Process 1 with Router ID 22.1.1.1
Peer Statistic Information
----------------------------------------------------------------------------
Area Id Interface Neighbor id State
0.0.0.0 Serial1/0/0 11.1.1.1 Full
0.0.0.0 Serial1/0/0 33.1.1.1 Full
----------------------------------------------------------------------------
[Huawei]
R3：
[Huawei]dis cu config ospf
[V200R003C00]
#
ospf 1
area 0.0.0.0
network 10.1.123.0 0.0.0.255
network 33.1.1.1 0.0.0.0
#
return
[Huawei]dis cu inter s 1/0/0
[V200R003C00]
#
interface Serial1/0/0
link-protocol fr
fr map ip 10.1.123.1 301 broadcast
fr map ip 10.1.123.2 302 broadcast
ip address 10.1.123.3 255.255.255.0
ospf network-type broadcast
#
return
[Huawei]dis ospf inter s 1/0/0
OSPF Process 1 with Router ID 33.1.1.1
Interfaces
Interface: 10.1.123.3 (Serial1/0/0)
Cost: 48 State: DR Type: Broadcast MTU: 1500
Priority: 1
Designated Router: 10.1.123.3
Backup Designated Router: 10.1.123.1
Timers: Hello 10 , Dead 40 , Poll 120 , Retransmit 5 , Transmit Delay 1
[Huawei]dis ospf peer bri
OSPF Process 1 with Router ID 33.1.1.1
Peer Statistic Information
----------------------------------------------------------------------------
Area Id Interface Neighbor id State
0.0.0.0 Serial1/0/0 11.1.1.1 Full
0.0.0.0 Serial1/0/0 22.1.1.1 Full
----------------------------------------------------------------------------
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