Troubleshooting Ospf Configuration - 3Com Switch 4800G 24-Port Configuration Manual

Switch 4800g family 24-port, pwr 24-port, 48-port, pwr 48-port, 24-port sfp

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Product manual (13 pages)

Datasheet (8 pages)

Configuration manual (27 pages)

Table of Contents

Troubleshooting OSPF

Configuration

No OSPF Neighbor

Relationship Established

<SwitchB> system-view

[SwitchB] acl number 2000

[SwitchB-acl-basic-2000] rule 10 permit source 192.1.1.1 0.0.0.0

[SwitchB-acl-basic-2000] quit

[SwitchB] interface vlan-interface 100

[SwitchB-Vlan-interface100] ip address 192.1.1.2 255.255.255.0

[SwitchB-Vlan-interface100] ospf dr-priority 0

[SwitchB-Vlan-interface100] quit

[SwitchB] router id 2.2.2.2

[SwitchB] ospf 100

[SwitchB-ospf-100] enable link-local-signaling

[SwitchB-ospf-100] enable out-of-band-resynchronization

[SwitchB-ospf-100] graceful-restart help 2000

[SwitchB-ospf-100] area 0

[SwitchB-ospf-100-area-0.0.0.0] network 192.1.1.0 0.0.0.255

[SwitchB-ospf-100-area-0.0.0.0] quit

3 Configure Switch C

<SwitchC> system-view

[SwitchC] interface vlan-interface 100

[SwitchC-Vlan-interface100] ip address 192.1.1.3 255.255.255.0

[SwitchC-Vlan-interface100] ospf dr-priority 2

[SwitchC-Vlan-interface100] quit

[SwitchC] router id 3.3.3.3

[SwitchC] ospf 100

[SwitchC-ospf-100] enable link-local-signaling

[SwitchC-ospf-100] enable out-of-band-resynchronization

[SwitchC-ospf-100] area 0

[SwitchC-ospf-100-area-0.0.0.0] network 192.1.1.0 0.0.0.255

[SwitchC-ospf-100-area-0.0.0.0] quit

4 Verify the configuration

# After the configurations on Switch A, Switch B and Switch C are completed and

the switches are running steadily, perform OSPF GR on Switch A.

<SwitchA> reset ospf 100 process graceful-restart

No OSPF neighbor relationship can be established.

If the physical link and lower layer protocols work well, check OSPF parameters

configured on interfaces. Two neighbors must have the same parameters, such as

the area ID, network segment and mask (a P2P or virtual link may have different

network segments and masks), network type. If the network type is broadcast or

NBMA, at least one interface must have a router priority higher than 0.

Processing steps

1 Display OSPF neighbor information using the display ospf peer command.

2 Display OSPF interface information using the display ospf interface command.