User`s guide

AT-9108, AT-8518, AT-8525, and AT-8550 User’s Guide
9-21
OSPF Configuration Example
Figure 9-5 shows an example of an autonomous system using OSPF
routers. The details of this network follow.
Figure 9-5
OSPF Configuration Example
Area 0 is the backbone area. It is located at the headquarters and has
the following characteristics:
❑
2 internal routers (IR1 and IR2)
❑
2 area border routers (ABR1 and ABR2)
❑
Network number 10.0.x.x
❑
2 identified VLANs (HQ_10_0_2 and HQ_10_0_3)
LINK DISABLED
12345678
12345678
POWER
DIAG
234 567
1 8
GIGABIT ETHERNET SWITCH
ACTIVITY
LINK
1000BASE-X NETWORK PORTS
10/100BASE-T ETHERNET SWITCH
WITH GIGABIT ETHERNET
1000BASE-X NETWORK PORTS10/100BASE-TX MDI-X NETWORK PORTS
POWER
DIAG
ACTIVITY
LINK
1234
9101112
5678
13 14 15 16
12345678
910111213141516
LINK/ACTIVITY
LINKACTIVITY DISABLED
17R 17
18
18 17R 17
Area 0
IR 2
IR 1
ABR 1ABR 2
Area 5
Area 6 (stub)
Headquarters
Los Angeles
Chicago
Virtual link
10.0.1.1
10.0.1.2
10.0.2.2
10.0.2.1
10.0.3.2
10.0.3.1
H
Q
_
1
0
_
0
_
3
H
Q
_
1
0
_
0
_
2
160.26.25.1 160.26.26.1
C
h
i
_
1
6
0
_
2
6
_
2
6
160.26.25.2
L
A
_
1
6
1
_
4
6
_
2
161.48.2.2
161.48.2.1
160.26.26.2
LINK DISABLED
12345678
12345678
POWER
DIAG
234 567
1 8
GIGABIT ETHERNET SWITCH
ACTIVITY
LINK
1000BASE-X NETWORK PORTS
LINK DISABLED
12345678
12345678
POWER
DIAG
234 567
1 8
GIGABIT ETHERNET SWITCH
ACTIVITY
LINK
1000BASE-X NETWORK PORTS
LINK DISABLED
12345678
12345678
POWER
DIAG
234 567
1 8
GIGABIT ETHERNET SWITCH
ACTIVITY
LINK
1000BASE-X NETWORK PORTS
10/100BASE-T ETHERNET SWITCH
WITH GIGABIT ETHERNET
1000BASE-X NETWORK PORTS10/100BASE-TX MDI-X NETWORK PORTS
POWER
DIAG
ACTIVITY
LINK
1234
9101112
5678
13 14 15 16
12345678
910111213141516
LINK/ACTIVITY
LINKACTIVITY DISABLED
17R 17
18
18 17R 17
10/100BASE-T ETHERNET SWITCH
WITH GIGABIT ETHERNET
1000BASE-X NETWORK PORTS10/100BASE-TX MDI-X NETWORK PORTS
POWER
DIAG
ACTIVITY
LINK
1234
9101112
5678
13 14 15 16
12345678
910111213141516
LINK/ACTIVITY
LINKACTIVITY DISABLED
17R 17
18
18 17R 17
10/100BASE-T ETHERNET SWITCH
WITH GIGABIT ETHERNET
1000BASE-X NETWORK PORTS10/100BASE-TX MDI-X NETWORK PORTS
POWER
DIAG
ACTIVITY
LINK
1234
9101112
5678
13 14 15 16
12345678
910111213141516
LINK/ACTIVITY
LINKACTIVITY DISABLED
17R 17
18
18 17R 17