OSPF NBMA Experiment (unicast, broadcast)

Under Frame Relay, the OSPF network type defaults to NBMA, which does not support broadcasting (in fact, it refers to multicast, because OSPF sends data via multicast) and only supports unicast.

The following experiment is under Frame Relay to enable the OSPF network type to support the default unicast, and to support the broadcast by modifying the network type (in fact, the multicast, because OSPF sends the message through multicast).

Here's the first way we're going to use the default unicast experiment, and the second experiment is broadcast (since you don't support broadcasting, then I'll let you support the broadcast "actually refers to multicast, because OSPF sends messages through multicast" No, OK? ）

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(Two experimental Frame relay map tables are the same)

First, using the default unicast mode, you need to manually specify the 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 port defaults to PPP, that is, the peer network type. therefore need to be modified into 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) (To select 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, Dead, Poll, 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, Dead, Poll, 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, Dead, Poll, 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

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

Second, NBMA does not support broadcasting by default (in fact, it refers to multicast), then I will let you support the broadcast mode (all do not need to specify peer), the specific experiment is as follows:

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 (establish frame Relay map to support broadcast table?) ）

FR Map IP 10.1.123.3 103 broadcast

IP address 10.1.123.1 255.255.255.0

OSPF Network-type broadcast (network type Modification)

#

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, Dead, Poll, 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, Dead, Poll, 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, Dead, Poll, 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

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

This article is from the "Five Corners" blog, please be sure to keep this source http://hi289.blog.51cto.com/4513812/1795376

OSPF NBMA Experiment (unicast, broadcast)