Routing > OSPF > Diagnostics
Routing
336
RM GUI HiSecOS EAGLE20/30
Release
3.0
09/2015
Buttons
Sequence Displays the value of the sequence field in an LSA.
The router examines the contents or the LS checksum field whenever the
LS sequence number field indicates that 2 instances of an LSA are the
same. If there is a difference, the router considers the instance with the
larger LS checksum to be most recent.
Age Displays the age of the link state advertisement in seconds.
When the router creates the LSA it sets the LS age to
0
. As the routers
transmit the LSA across the network they increment the age by the value
specified in "Transmit Delay [s]". If a router receives 2 LSAs for the same
segment having identical LS sequence numbers and LS checksums, then
the router examines the age of the LSAs. The router immediately accepts
LSA with MaxAge. Otherwise, the router accepts the LSA with the smaller
age.
Checksum Displays the contents of the checksum.
The field is a checksum of the complete contents of the LSA, except for the
age field. The age field of the advertisement increases as the routers
transmit the message across the network. Excluding the age field allows
routers to transmit the message without needing to update the checksum
field.
Button Meaning
Reload Updates the fields with the values that are saved in the volatile memory
(
RAM
) of the device.
Help Opens the online help.
Parameters Meaning
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