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17-120 Riverstone Networks RS Switch Router User Guide Release 8.0
Traffic Engineering MPLS Configuration
IS-IS IGP Shortcuts Example
Refer to the example routing network shown in Figure 17-23. On R1, packets for the destination 53.1.0.0/16 (on R4)
use the gateway IP address 153.1.1.12 as the immediate next-hop. In the routing table display on R1 shown below, the
entry for destination 53.1.0.0/16 is shown in bold:
To enable IGP shortcuts on the router R1, enter the following command:
R1#
ip show routes
Destination Gateway Owner Netif
----------- ------- ----- -----
10.61.0.0/16 directly connected - en0
12.12.12.12 153.1.1.12 ISIS_L1 to-R2
15.15.15.15 153.1.1.12 ISIS_L1 to-R2
26.26.26.26 153.1.1.12 ISIS_L1 to-R2
27.0.0.0/8 153.1.1.12 ISIS_L1 to-R2
53.1.0.0/16 153.1.1.12 ISIS_L1 to-R2
55.1.0.0/16 153.1.1.12 ISIS_L1 to-R2
92.1.0.0/16 153.1.1.12 ISIS_L1 to-R2
95.1.0.0/16 153.1.1.12 ISIS_L1 to-R2
96.1.0.0/16 153.1.1.12 ISIS_L1 to-R2
97.1.0.0/16 153.1.1.12 ISIS_L1 to-R2
101.1.0.0/16 153.1.1.12 ISIS_L1 to-R2
102.1.0.0/16 153.1.1.12 ISIS_L1 to-R2
103.1.0.0/16 153.1.1.12 ISIS_L1 to-R2
104.1.0.0/16 153.1.1.12 ISIS_L1 to-R2
113.113.113.113 113.113.113.113 - lo0
124.124.124.124 Unnumbered - LSP1
126.126.126.126 153.1.1.12 ISIS_L1 to-R2
127.0.0.1 127.0.0.1 - lo0
134.141.0.0/16 10.61.1.1 Static en0
153.1.0.0/16 directly connected - to-R2
185.1.0.0/16 153.1.1.12 ISIS_L1 to-R2
186.0.0.0/8 153.1.1.12 ISIS_L1 to-R2
187.1.0.0/16 153.1.1.12 ISIS_L1 to-R2
192.1.1.0/24 153.1.1.12 ISIS_L1 to-R2
195.1.0.0/16 153.1.1.12 ISIS_L1 to-R2
R1(config)# ip-router global set install-lsp-routes on
R1(config)# isis set igp-shortcuts enable