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Routing Table Display Commands 139
display ip routing-table
ip_address
Syntax
display ip routing-table ip_address [ mask ] [ longer-match ] [
verbose ]
Interface Output interface, through which the data packet destined for the
destination network is sent
Vlinkindex Virtual link index
State Route state description:
ActiveU — The route is selected and is optimum
Blackhole — Blackhole route is similar to Reject route, but it will not
send the ICMP unreachable message to the source end
Delete — The route is deleted
Gateway — Identifies that the route is not an interface route
Hidden — The route exists, but it is unavailable temporarily for some
reasons (e.g., configured policy or interface is Down). Moreover, you
do not wish to delete it. Therefore, you need to hide it, so as to
restore it again later
Holddown — Holddown is one kind of route redistribution policy
adopted by some distance-vector (D-V) routing protocols (e.g., RIP),
through which these routing protocols can avoid the flooding of error
routes and deliver the routing unreachable message accurately. For
example, the RIP redistributes a certain route every a period of time
regardless of whether the actually found routes destined for the same
destination change. For more details, refer to the specific routing
protocols
Int — The route is discovered by interior gateway protocol (IGP)
NoAdvise — The routing protocol does not redistribute NoAdvise
route when it redistributes routes based on the policy
NotInstall — The routing protocol generally selects the route with the
highest precedence from its routing table, then places it in its core
routing table and redistributes it. Although the NotInstall route
cannot be placed in the core routing table, it is possibly that it is
selected and redistributed
Reject — Unlike the normal routes, the Reject route will discard the
packets that select it as their route, and the router will send ICMP
unreachable message to the source end. Reject route is usually used
for the network test
Retain — When the routes from the routing table are deleted, the
routes with Retain flag will not be deleted. Using this function you can
set Retain flag for some static routes, so that they can exist in the core
routing table
Static — The route with Static flag will not be cleared from the
routing table after you save it and reboot the router. Generally, the
static route configured manually in the router belongs to a Static
route
Unicast — Unicast route
Age Time to live
Cost Value of cost
Tag Tag of the route
Table 18 Output Description of the ip routing-table acl verbose Command
Field Description