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Chapter 20: Checking the Status of Routing Tables
Table 62. OSPF Link State DB table fields
Field
Sequence
LS Age
Checksum
LS DB Advertisement
Obtaining OSPF Area Aggregate Information
Obtain OSPF area aggregate information if you want details about the IP address and TOS
data that OSPF uses to determine the destination of packets. To access this information:
1.
If you are not in the Front Panel view, switch to it by clicking the CoreWatch main
window.
2.
Select the Monitor menu, choose Routing State, choose OSPF State, and then choose
OSPF Area Aggregate Table.
An OSPF Area Aggregate table similar to the following figure appears:
414
Indicates the sequence number of the link-state advertisement.
This field is used to detect old and duplicate link state
advertisements.
The larger the number the more recent the link-state
advertisement.
Indicates how old the link-state advertisement is. The value in
this field is given in seconds.
Indicates the checksum of the complete contents of the link-
state advertisement, except for the age field. The age field is
excluded so that a link-state advertisement's age can be
incremented without updating the checksum.
Contains the entire link-state advertisement including its
header.
Description
CoreWatch User's Manual
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