Cabletron Systems SmartSwitch 8-slot, User'S Reference Manual

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Chapter 6: Routing Policy Configuration Guide
6 - 2 SSR User Reference Manual
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.
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
Preference of Defined by CLI Command Default
Direct connected networks ip-router global set interface 0
OSPF routes ospf 10
Static routes from config ip add route 60
RIP routes rip set preference 100
Point-to-point interface 110
Routes to interfaces that are
down ip-router global set interface
down-preference 120
Aggregate/generate routes aggr-gen 130
OSPF AS external routes ospf set ase-defaults preference 150
BGP routes bgp set preference 170