Monitoring Route Information

To view the inet.0 (IPv4) routing table in the J-Web interface, select Monitor>Routing>Route Information, or enter the following CLI commands:

show route terse
show route detail

Table 206 summarizes key output fields in the routing information display.

Table 206: Summary of Key Routing Information Output Fields

Field	Values	Additional Information
n destinations	Number of destinations for which there are routes in the routing table.
n routes	Number of routes in the routing table: active—Number of routes that are active. holddown—Number of routes that are in hold-down state (neither advertised nor updated) before being declared inactive. hidden—Number of routes not used because of routing policies configured on the .
Destination	Destination address of the route.
Protocol/ Preference	Protocol from which the route was learned: Static, Direct, Local, or the name of a particular protocol. The preference is the individual preference value for the route.	The route preference is used as one of the route selection criteria.
Next-Hop	Network layer address of the directly reachable neighboring system (if applicable) and the interface used to reach it.	If a next hop is listed as Discard, all traffic with that destination address is discarded rather than routed. This value generally means that the route is a static route for which the discard attribute has been set. If a next hop is listed as Reject, all traffic with that destination address is rejected. This value generally means that the address is unreachable. For example, if the address is a configured interface address and the interface is unavailable, traffic bound for that address is rejected. If a next hop is listed as Local, the destination is an address on the host (either the loopback address or Ethernet management port 0 address, for example).
Age	How long the route has been known.
State	Flags for this route.	There are many possible flags. For a complete description, see the Junos OS Interfaces Command Reference.
AS Path	AS path through which the route was learned. The letters of the AS path indicate the path origin: I — IGP. E — EGP. ? — Incomplete. Typically, the AS path was aggregated.