Juniper IGP - CONFIGURATION GUIDE V11.1.X, Configuration Manual

Page: 52 / 454

Table 5: Default Administrative Distances for Route Sources (continued)
Default Distance Route Source
2 Internal access route
3 Access route
20 External BGP
110 OSPF
115 IS-IS
120 RIP
200 Internal BGP
255 Unknown
If the IP routing table contains several routes to the same prefix—for example, an
OSPF route and a RIP route—the route with the lowest administrative distance is
used for forwarding.
To set the administrative distance for BGP routes, see JUNOSe BGP and MPLS
Configuration Guide .
To set the administrative distance for RIP, IS-IS, and OSPF, use the following distance
commands in Router Configuration mode.
distance
■
Use to set an administrative distance for RIP or OSPF routes in the range 0–255.
■
For RIP routes, the default value is 120.
■
For OSPF routes, the default value is 110.
■
Example
host1(config)# router rip
host1(config-router)# distance 100
■
Use the no version to restore the default value.
■
See distance
distance ip
■
Use to set the administrative distance for IS-IS routes in the range 1–255.
■
Example
host1(config)# router isis
host1(config-router)# distance 80 ip
28 ■
IP Routing
JUNOSe 11.0.x IP, IPv6, and IGP Configuration Guide