Huawei Quidway S3900 series Command Manual page 313

Command Manual – Routing Protocol
Quidway S3900 Series Ethernet Switches-Release 1510
Table 1-2 Description on the fields of the display ip routing-table acl command
Field
Destination
Mask
Protocol
Preference
Nexthop
Interface
State
Destination address
Mask
Routing protocol
Routing preference
Next hop address
Output interface, through which the data packets destined for the
destination network segment are sent
Route state description:
ActiveU
Blackhole
Delete
Gateway
Hidden
Holddown
Int
Huawei Technologies Proprietary
1-4
Chapter 1 Static Route Configuration
Description
This is an active unicast route.
"U" means "unicast".
Blackhole route is similar to
Reject route, except that a
Blackhole route sends no ICMP
unreachable message to the
source end.
The route is deleted
The route
reachable.
The route is hidden. That is, the
route exists, but it is hidden
because it is unavailable for the
moment due to some reason
(e.g., a configured policy or a
down interface) and is not
expected to be deleted, and it
can be restored later.
Holddown
redistribution policy adopted by
some distance-vector
routing protocols such as RIP.
Through Holddown, a routing
protocol can avoid the flooding
of error routes and deliver route
unreachable
accurately. It redistributes a
certain route every a period of
time regardless of whether the
actually found routes destined
for the same
change. For more details, refer
to the specific routing protocols.
The route is discovered by
interior gateway protocol (IGP).
Commands
is not directly
is a route
(D-V)
messages
destination