UANTA COMPUTER INC.
Layer 2,3,IPv6+QoS Switch
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Layer 2,3,IPv6+QoS Network Switch User Manual Version 0.1
Page: 827/970
Network Address - The IP route prefix for the destination.
Subnet Mask - Also referred to as the subnet/network mask, this indicates the portion of
the IP interface address that identifies the attached network.
Next Hop IP Address - The outgoing router IP address to use when forwarding traffic to
the next router (if any) in the path towards the destination. The next router will always be
one of the adjacent neighbors or the IP address of the local interface for a directly
attached network.
Preference - Specifies a preference value for the configured next hop.
Command Buttons
Add Route - Go to a separate page where a route can be created.
11.2.3.8.5.
Configuring Router Route Preference
Use this panel to configure the default preference for each protocol (e.g. 60 for static
routes, 170 for BGP). These values are arbitrary values in the range of 1 to 255 and are
independent of route metrics. Most routing protocols use a route metric to determine the
shortest path known to the protocol, independent of any other protocol.
The best route to a destination is chosen by selecting the route with the lowest
preference value. When there are multiple routes to a destination, the preference values
are used to determine the preferred route. If there is still a tie, the route with the best
route metric will be chosen. To avoid problems with mismatched metrics (i.e. RIP and
OSPF metrics are not directly comparable) you must configure different preference
values for each of the protocols.
Configurable Data
Static - The static route preference value in the router. The default value is 1. The range
is 1 to 255.
OSPF Intra - The OSPF intra route preference value in the router. The default value is 8.
The range is 1 to 255. The OSPF specification (RFC 2328) requires that preferences
must be given to the routes learned via OSPF in the following order: intra < inter < type-1
< type-2.
OSPF Inter - The OSPF inter route preference value in the router. The default value is 10.
