ospf_monitor.1m (2010 09)

ospf_monitor(1M) ospf_monitor(1M)

described AS boundary router.

5 Request the AS external link advertisements. They describe routes to destinations exter-

nal to the Autonomous System. For this type of request, the ls_id ﬁeld should be set to

the destination network’s IP address.

c Display cumulative log. This log includes input/output statistics for monitor request, hello,

data base description, link-state request, link-state update, and link-state ack packets. Area

statistics are provided which describe the total number of routing neighbors and number of

active OSPF interfaces. Routing table statistics are summarized and reported as the number of

intra-area routes, inter-area routes, and AS external data base entries.

e Display cumulative errors. This log reports the various error conditions which can occur

between OSPF routing neighbors and shows the number of occurrences for each.

h Display the next hop list. This list of valid next hops is mostly derived from the SPF calcula-

tion.

l [retrans]

Display the link-state database (except for ASE’s). This table describes the routers and net-

works making up the AS. If retrans is non-zero, the retransmit list of neighbors held by this

lsdb structure will be printed.

A [retrans]

Display the AS external data base entries. This table reports the advertising router, forward-

ing address, age, length, sequence number, type, and metric for each AS external route. If

retrans is non-zero, the retransmit list of neighbors held by this lsdb structure will be printed.

o [which] Display the OSPF routing table. This table reports the AS border routes, area border routes,

summary AS border routes, networks, summary networks, and AS external networks currently

managed via OSPF. If which is omitted, all of the above will be listed. If speciﬁed, the value of

which (between 1 and 63) speciﬁes that only certain tables should be displayed. The appropri-

ate value is determined by adding up the values for the desired tables from the following list:

1 Routes to AS border routers in this area.

2 Routes to area border routers for this area.

4 Summary routes to AS border routers in other areas.

8 Routes to networks in this area.

16 Summary routes to networks in other areas.

32 AS routes to non-OSPF networks.

I Display all interfaces. This report shows all interfaces conﬁgured for OSPF. Information

reported includes the area, interface IP address, interface type, interface state, cost, priority,

and the IP address of the DR and BDR for the network.

N Display all OSPF routing neighbors. Information reported includes the area, local interface

address, router ID, neighbor IP address, state, and mode.

V Display Gated version information.

AUTHOR

Rob Coltun of University of Maryland

Jeffrey C. Honig of Cornell University