3Com Switch 7757, Configuration Manual

Page: 321 / 940

OSPF Configuration Example 321
OSPF Configuration
Example
Configuring DR Election
Based on OSPF Priority
Network requirements
Four Switch 7750, SwitchA, SwitchB, SwitchC, and SwitchD, which run OSPF, are
on the same segment, as shown in Figure 73. Perform proper configurations to
make SwitchA and SwitchC become DR and BDR respectively. Set the priority of
SwitchA to 100 (the highest on the network) so that SwitchA is elected as the DR.
Set the priority of SwitchC to 2 (the second highest priority) so that SwitchC is
elected as the BDR. Set the priority of SwitchB to 0 so that SwitchB cannot be
elected as the DR. No priority is set for SwitchD so it has a default priority of 1.
Table 250 Display configuration
Operation Command Description
Display brief information about
one or all OSPF processes display ospf [ process-id ] brief You can execute the
display command in
any view.
Display OSPF statistics display ospf [ process-id ]
cumulative
Display OSPF LSDB information display ospf [ process-id ]
[ area-id ] lsdb [ brief | [ asbr |
ase | network | nssa | router |
summary [ ip-address |
verbose ] ] [ originate-router
ip-address | self-originate ] ]
Display OSPF peer information display ospf [ process-id ] peer
[ brief | statistics ]
Display OSPF next hop
information display ospf [ process-id ]
nexthop
Display OSPF routing table display ospf [ process-id ]
routing
Display OSPF virtual links display ospf [ process-id ] vlink
Display OSPF request list display ospf [ process-id ]
request-queue
Display OSPF retransmission list display ospf [ process-id ]
retrans-queue
Display the information about
OSPF ABR and ASBR display ospf [ process-id ]
abr-asbr
Display OSPF interface
information display ospf [ process-id ]
interface [ verbose |
interface-type interface-number
[ verbose ] ]
Display OSPF errors display ospf [ process-id ] error
Display OSPF ASBR summary
information display ospf [ process-id ]
asbr-summary [ ip-address
mask ]
Reset one or all OSPF processes reset ospf [ statistics ] { all |
process-id }
Use the reset
command in user view.