Summarize Routes; Control Route Metrics - Dell Force10 MXL Blade Configuration Manual

Summarize Routes

Routes in the RIPv2 routing table are summarized by default, thus reducing the size of the routing table
and improving routing efficiency in large networks. By default, the
RIP mode is enabled and summarizes RIP routes up to the classful network boundary.
If you must perform routing between discontiguous subnets, disable automatic summarization. With
automatic route summarization disabled, subnets are advertised.
The
autosummary
summarization, use the
Note: If you enable the
summarized address.

Control Route Metrics

As a distance-vector protocol, RIP uses hop counts to determine the best route, but sometimes the shortest
hop count is a route over the lowest-speed link. To manipulate RIP routes so that the routing protocol
prefers a different route, you must manipulate the route by using the
Exercise caution when applying an
the command is modifying RIP advertisements before sending out those advertisements.
offset
The command also allows you to manipulate route metrics. Use the command to assign different
distance
weights to routes so that the ones with the lower weight or administrative distance assigned are preferred.
To set route metrics, use either of the following commands in ROUTER RIP mode:
Command Syntax
distance weight [ip-address mask
[access-list-name]]
offset-list access-list-name {in | out} offset
[interface]
command requires no other configuration commands. To disable automatic route
command in ROUTER RIP mode.
no autosummary
command on an interface, the system does not advertise the
ip split-horizon
offset
Command Mode
ROUTER RIP
ROUTER RIP
command to routers on a broadcast network, as the router using
Purpose
Apply a weight to all routes or a specific route and
ACL. Configure the following parameters:
• weight
•
ip-address mask
decimal format (A.B.C.D), and the mask in
slash format (/x).
•
access-list-name
ACL.
Apply an additional number to the incoming or
outgoing route metrics. Configure the following
parameters:
• prefix-list-name
prefix list to determine which incoming routes
will be modified
•
offset
• interface
interface.
command in ROUTER
autosummary
command.
offset
range: 1 to 255 (default is 120)
: the IP address in dotted
: name of a configured IP
: the name of an established
range: 0 to 16.
: the type, slot, and number of an
Routing Information Protocol (RIP) | 443