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
----------------------------------------------------------------------------