C
HAPTER
45
| IP Routing Commands
Open Shortest Path First (OSPFv2)
– 1070 –
EXAMPLE
Console#show ip ospf
Routing Process "ospf 1" with ID 192.168.1.3
Process uptime is 20 minutes
Conforms to RFC2328, and RFC1583Compatibility flag is disabled
Supports only single TOS(TOS0) routes
SPF schedule delay 5 secs, Hold time between two SPFs 10 secs
Refresh timer 10 secs
Number of incomming current DD exchange neighbors 0/5
Number of outgoing current DD exchange neighbors 0/5
Number of external LSA 0. Checksum 0x000000
Number of opaque AS LSA 0. Checksum 0x000000
LSDB database overflow limit is 20480
Number of LSA originated 1
Number of LSA received 0
Number of areas attached to this router: 1
Area 192.168.1.3
Number of interfaces in this area is 1(1)
Number of fully adjacent neighbors in this area is 0
Area has no authentication
SPF algorithm last executed 00:00:08.739 ago
SPF algorithm executed 1 times
Number of LSA 1. Checksum 0x007f09
Console#
Table 143: show ip ospf - display description
Field Description
Routing Process
with ID
OSPF process ID and router ID. The router ID uniquely identifies the router
in the autonomous system. By convention, this is normally set to one of the
router's IP interface addresses.
Process uptime The time this process has been running
Conforms to
RFC2328
Shows that this router is compliant with OSPF Version 2.
RFC1583
Compatibility
flag
Shows whether or not compatibility with the RFC 1583 (an earlier version
of OSPFv2) is enabled.
Supports only
single TOS
(TOS0) routes
Optional Type of Service (ToS) specified in OSPF Version 2, Appendix F.1.2
is not supported, so only one cost per interface can be assigned.
SPF schedule
delay
Delay between receiving a change to SPF calculation.
Hold time Sets the hold time between two consecutive SPF calculations.
Refresh timer The time between refreshing the LSA database.
Number of
current DD
exchange
neighbors
Number of neighbors currently exchanging database descriptor packets.
Number of
external LSA
The number of external link-state advertisements (Type 5 LSAs) in the link-
state database. These LSAs advertise information about routes outside of
the autonomous system.
Checksum The sum of the LS checksums of the external link-state advertisements
contained in the link-state database.
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