Cabletron Systems SSR-ATM29-02, Руководство пользователя, Страница: 293 / 386

CoreWatch User’s Guide 293
Chapter 18: Checking the Status of Routing Tables
Priority Indicates the interface's priority. In multi-access networks,
this field is used in the designated router election
algorithm.
The value 0 signifies that the router is not eligible to
become the designated router on this particular network.
In the event of a tie in this value, routers use their router
ID as a tie breaker.
Transit Delay Indicates how many seconds it takes to transmit a link-
state update packet over the interface.
Retransmission Interval Indicates how many seconds elapse between link-state
advertisement retransmissions for adjacencies belonging
to this interface. The value in this field is also used when
retransmitting database description and link-state request
packets.
Hello Interval Indicates how often the SSR sends hello packets on the
interface. The value is in seconds and must be the same for
all routes attached to the network.
Router-Dead Interval Indicates how many seconds that a router's Hello packets
have not been seen before its neighboring routers declare
the router down.
The value of this field is a multiple of the Hello Interval
field's value, and it must be the same for all routers
attached to a common network.
Poll Interval Indicates how often Hello packets are sent after a
neighboring router becomes inactive because no Hello
packets have been seen and the time specified in the
Router-Dead Interval field has elapsed. If a neighboring
router has become inactive, it may still be necessary to
send Hello Packets to the dead neighbor.
The value of this field should be much larger than that
specified in the Hello Interval. For example, 2 minutes can
be specified for an X.25 Packet Data Network (PDN).
State Indicates the OSPF state of the interface. The value of this
field will be one of the following: Down, Loopback,
Waiting, Point-to-Point, DR Other, Backup, or DR.
Designated Router Lists the IP address of the designated router.
Table 51. OSPF Interface Table Fields (Continued)
Field Description