Monitoring Routing Information
Purpose
Use the monitoring functionality to view the inet.0 routing table on the routing device.
Action
To view the routing tables in the J-Web interface, select Monitor > Routing > Route Information. Apply a filter or a combination of filters to view messages. You
can use filters to display relevant events.
To view the routing table in the CLI, enter the following commands
in the CLI interface:
- show route terse
- show route detail
Meaning
Table 1 describes the different filters, their functions, and the associated
actions.
Table 2 summarizes key output fields in the routing information display.
Table 1: Filtering Route Messages
Field
|
Function
|
Your Action
|
Destination Address
|
Specifies the destination address of the route.
|
Enter the destination address.
|
Protocol
|
Specifies the protocol from which the route
was learned.
|
Enter the protocol name.
|
Next hop address
|
Specifies the network layer address of the
directly reachable neighboring system (if applicable) and the interface
used to reach it.
|
Enter the next hop address.
|
Receive protocol
|
Specifies the dynamic routing protocol using
which the routing information was received through a particular neighbor.
|
Enter the routing protocol.
|
Best route
|
Specifies only the best route available.
|
Select the view details of the best route.
|
Inactive routes
|
Specifies the inactive routes.
|
Select the view details of inactive routes.
|
Exact route
|
Specifies the exact route.
|
Select the view details of the exact route.
|
Hidden routes
|
Specifies the hidden routes.
|
Select the view details of hidden routes.
|
Search
|
Applies the specified filter and displays
the matching messages.
|
To apply the filter and display messages,
click Search.
|
Table 2: Summary of Key Routing
Information Output Fields
Field
|
Values
|
Additional Information
|
Static Route Addresses
|
The list of static route addresses.
|
|
Protocol
|
Protocol from which the route was learned: Static, Direct, Local, or the name of a particular
protocol.
|
|
Preference
|
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 active.
|
|
State
|
Flags for this route.
|
There are many possible flags.
|
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.
|
|
Published: 2009-10-09
