Examine Routes in the Forwarding Table
Purpose
When you run into problems, such as connectivity problems, you may need to examine routes in the forwarding table to verify that the routing protocol process has relayed the correct information into the forwarding table.
Action
To display the set of routes installed in the forwarding table, enter the following Junos OS CLI operational mode command:
Sample Output
user@R2> show route forwarding-table Routing table: inet Internet: Destination Type RtRef Next hop Type Index NhRef Netif default perm 0 rjct 10 1 10.0.0.2/32 intf 0 10.0.0.2 locl 256 1 10.0.0.3/32 user 1 10.1.23.0 ucst 282 4 so-0/0/1.0 10.0.0.4/32 user 1 10.1.24.0 ucst 290 7 so-0/0/3.0 10.0.0.6/32 user 1 10.1.24.0 ucst 290 7 so-0/0/3.0 10.1.12.0/30 intf 1 ff.3.0.21 ucst 278 6 so-0/0/0.0 10.1.12.0/32 dest 0 10.1.12.0 recv 280 1 so-0/0/0.0 10.1.12.2/32 intf 0 10.1.12.2 locl 277 1 10.1.12.3/32 dest 0 10.1.12.3 bcst 279 1 so-0/0/0.0 10.1.23.0/30 intf 0 ff.3.0.21 ucst 282 4 so-0/0/1.0 10.1.23.0/32 dest 0 10.1.23.0 recv 284 1 so-0/0/1.0 10.1.23.1/32 intf 0 10.1.23.1 locl 281 1 10.1.23.3/32 dest 0 10.1.23.3 bcst 283 1 so-0/0/1.0 10.1.24.0/30 intf 0 ff.3.0.21 ucst 290 7 so-0/0/3.0 10.1.24.0/32 dest 0 10.1.24.0 recv 292 1 so-0/0/3.0 10.1.24.1/32 intf 0 10.1.24.1 locl 289 1 10.1.24.3/32 dest 0 10.1.24.3 bcst 291 1 so-0/0/3.0 10.1.36.0/30 user 0 10.1.23.0 ucst 282 4 so-0/0/1.0 10.1.46.0/30 user 0 10.1.24.0 ucst 290 7 so-0/0/3.0 100.100.1.0/24 user 0 10.1.12.0 ucst 278 6 so-0/0/0.0 100.100.2.0/24 user 0 10.1.12.0 ucst 278 6 so-0/0/0.0 100.100.3.0/24 user 0 10.1.12.0 ucst 278 6 so-0/0/0.0 100.100.4.0/24 user 0 10.1.12.0 ucst 278 6 so-0/0/0.0 [...Output truncated...]
Meaning
The sample output shows the network-layer prefixes and their next hops installed in the forwarding table. The output includes the same next-hop information as in the show route detail command (the next-hop address and interface name). Additional information includes the destination type, the next-hop type, the number of references to this next hop, and an index into an internal next-hop database. (The internal database contains additional information used by the Packet Forwarding Engine to ensure proper encapsulation of packets sent out an interface. This database is not accessible to the user.
For detailed information about the meanings of the various flags and types fields, see the Junos Routing Protocols and Policies Command Reference.
