Information Technology Reference
In-Depth Information
Example 8-9 shows the output of the
show ip ospf database
command and the
show ip route
command, as executed on Router 7 from Figure 8-6. There is only a database for Area 10. ABRs
maintain a database for each connected area, as shown in Router 3 output. A router connected
to the backbone with a virtual link, such as Router 10 in Figure 8-6, maintains databases for its
physically connected areas, and for area 0, which is connected only through the virtual link. The
Router 7 routing table includes all routes, as does the Router 3 routing table. Later in this
chapter, area 10 is configured as a stub area and the number of routes are significantly reduced.
Output from
show ip ospf database
and
show ip route
on Router 7 in Figure 8-6
Example 8-9
Router7#show ip ospf database
OSPF Router with ID (192.16.100.5) (Process ID 100)
Router Link States (Area 10)
Link ID ADV Router Age Seq# Checksum Link count
192.16.100.4 192.16.100.4 1594 0x8000000E 0xADE9 2
192.16.100.5 192.16.100.5 1593 0x80000007 0xB5EB 4
Summary Net Link States (Area 10)
Link ID ADV Router Age Seq# Checksum
192.16.100.2 192.16.100.4 1122 0x80000001 0xEAD6
192.16.100.3 192.16.100.4 1122 0x80000001 0x631D
192.16.100.4 192.16.100.4 56 0x80000004 0x6C5A
192.16.100.16 192.16.100.4 1137 0x8000000B 0xE5D3
192.16.100.32 192.16.100.4 840 0x80000001 0x4029
192.16.100.240 192.16.100.4 322 0x80000003 0xF79C
Summary ASB Link States (Area 10)
Link ID ADV Router Age Seq# Checksum
192.16.100.2 192.16.100.4 322 0x80000001 0xD2EE
Type-5 AS External Link States
Link ID ADV Router Age Seq# Checksum Tag
10.0.0.0 192.16.100.2 329 0x80000001 0xBEC8 0
Router7#show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, ia - IS-IS inter area
* - candidate default, U - per-user static route, o - ODR
P - periodic downloaded static route
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