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Configuration considerations, Tie breaker rules – Brocade Multi-Service IronWare Routing Configuration Guide (Supporting R05.6.00) User Manual

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Multi-Service IronWare Routing Configuration Guide

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Configuration considerations

TABLE 63

IPv4 Route-map handling

TABLE 64

IPv6 Route-map handling

Configuration considerations

These are the things to consider while configuring the Brocade device:

Import configuration commands allow specifying a non-existing source VRF. Routes will be
imported dynamically when the source VRF is created.

If the route-map is empty, then no course of actions are applied while importing the routes.

If you change the configuration of a route-map, then all the VRFs which are configured to use
this route-map will be processed again.

Tie breaker rules

The rules in the sequence below apply to break the tie when the same routes are imported from
multiple VRFs including the local route:

If routes are originated from different protocols, then the protocol with the best administrative
distance will be used to break the tie.

If the routes’ origin (protocol) are the same, then the metric value will be used to break the tie.

Attributes used for filtering routes

Attributes set using a route map

IP address (Prefix list, Access list)

Next hop (Prefix list, Access list)

Metric value

Metric value

Nexthop

Tag type

Distance

Route type

Tag

BGP attributes (AS path, Community, Ext
community access list)

Interface type

Protocol type

Attributes used for filtering routes

Attributes set using a route map

IP address (Prefix list)

Next hop (Prefix list)

Metric value

Metric value

Nexthop

Tag type

Distance

Route type

Tag

BGP attributes (AS path, Community, Ext
community access list)

Interface type

Protocol type