Import Policies; Import-Source; Route-Filter - Cabletron Systems SmartSwitch 8-slot User's Reference Manual

Chapter 6: Routing Policy Configuration Guide
A default preference is assigned to each source from which the SSR routing process
receives routes. Preference values range from 0 to 255 with the lowest number
indicating the most preferred route.
The following table summarizes the default preference values for routes learned in
various ways. The table lists the CLI commands that set preference, and shows the
types of routes to which each CLI command applies. A default preference for each type
of route is listed, and the table notes preference precedence between protocols. The
narrower the scope of the statement, the higher precedence its preference value is
given, but the smaller the set of routes it affects.
Preference of
Direct connected networks
OSPF routes
Static routes from config
RIP routes
Point-to-point interface
Routes to interfaces that are
down
Aggregate/generate routes
OSPF AS external routes
BGP routes

Import Policies

Import policies control the importation of routes from routing protocols and their
installation in the routing databases (Routing Information Base and Forwarding
Information Base). Import Policies determine which routes received from other
systems are used by the SSR routing process. Every import policy can have up to two
components:

• Import-Source

• Route-Filter

6 - 2
Defined by CLI Command
ip-router global set interface
ospf
ip add route
rip set preference
ip-router global set interface
down-preference
aggr-gen
ospf set ase-defaults preference
bgp set preference
Default
0
10
60
100
110
120
130
150
170
SSR User Reference Manual