3Com Switch 4800G 24-Port Configuration Manual page 456

456 C 34: IP 6 OSPF
HAPTER V
Configuring OSPFv3 DR
Election
3 C
V ONFIGURATION
Type : IA
NextHop : FE80::F40D:0:93D0:1
4 Configure Area 2 as a totally stub area
# Configure Switch C, the ABR, to make Area 2 as a totally stub area.
[SwitchC-ospfv3-1-area-0.0.0.2] stub no-summary
# Display OSPFv3 routing table information on Switch D. You can find route
entries are reduced. All non direct routes are removed except the default route.
[SwitchD] display ospfv3 routing
E1 - Type 1 external route,
E2 - Type 2 external route,
OSPFv3 Router with ID (4.4.4.4) (Process 1)
------------------------------------------------------------------------
*Destination: ::/0
Type : IA
NextHop : FE80::F40D:0:93D0:1
*Destination: 2001:2::/64
Type : I
NextHop : directly-connected
Network requirements
In the following figure:
The priority of Switch A is 100, the highest priority on the network, so it will be
■
the DR.
The priority of Switch C is 2, the second highest priority on the network, so it
■
will be the BDR.
The priority of Switch B is 0, so it cannot become the DR.
■
RouterD has the default priority 1.
■
Network diagram
Figure 145 Network diagram for OSPFv3 DR election configuration
Switch A
Vlan -int100
2001 ::1/64
Vlan -int100
2001 ::3/64
Switch C
Configuration procedure
1 Configure IPv6 addresses for interfaces (omitted)
2 Configure OSPFv3 basic functions
IA - Inter area route,
* - Seleted route
Switch B
Vlan -int200
2001 ::2/64
Vlan -int200
2001 ::4/64
Switch D
Cost : 4
Interface: Vlan400
I - Intra area route
Cost : 11
Interface: Vlan400
Cost : 1
Interface: Vlan400