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Field Description
Description of route state:
ActiveU An active unicast route, where “U” represents unicast.
Blackhole
A blackhole route is similar to a reject route, but no ICMP
unreachable message is sent to the source.
Delete A route is to be deleted.
Gateway An indirect route.
Hidden
An existing route that is temporarily unavailable for some reason (for
example, suppressed by a routing policy or down interface).
However, deletion is not expected. It is therefore hidden so that it
can recover later.
Holddown
Number of routes that are held down. Holddown is a route
advertisement policy that some D-V based routing protocols (for
example, RIP) use to avoid the spread of wrong routes but speed up
the correct spread of ICMP unreachable messages. A certain route
is advertised at intervals, no matter whether the currently discovered
route to the same destination changes. For details, refer to the
specific routing protocols.
Int A route discovered by IGP.
NoAdvise
A routing protocol does not advertise any NoAdvise route when
advertising routes in accordance with a routing policy.
NotInstall
A NotInstall route cannot be added to the core routing table, but may
be advertised. A route with the highest priority is generally selected
from the routing table, added to the core routing table, and then
advertised.
Reject
The routes marked with reject do not guide the router to forward
packets as a normal route does. The router discards the packets
matching reject routes and sends an ICMP unreachable message to
the source.
Reject routes are usually used for network tests.
Retain
The routes marked with retain will not be deleted when you delete
routes in the core routing table. You can mark static routes with
retain to make them stay in the core routing table.
Static
The routes marked with static will not be deleted from the routing
table after you perform a save operation and restart the router. The
routes manually configured on a router are marked with static.
State
Unicast A unicast route.
Age Lifetime of a route in the routing table, in the format of HH:MM:SS.
Cost Cost of a route.
display ip routing-table ip-address
Syntax
display ip routing-table ip-address [ mask | mask-length ] [ longer-match ] [ verbose ]
View
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