
Configuring and Customizing IP
117356-E Rev 00
3-15
Using Site Manager
To disable or reenable support for route filters, complete the following tasks:
Configuring Equal-Cost Multipath Support for RIP and OSPF
By default, the IP routing table stores a single best RIP route and a single best
OSPF route to a given destination. If either protocol submits another route to the
same destination, IP compares the new route with the current route. If the new
route is better, IP replaces the current route with the new route. If not, IP discards
the new route.
IP equal-cost multipath (ECMP) support is a load-balancing feature that allows IP
to distribute traffic over multiple (up to five) equal-cost paths to the same
destination.
IP supports three methods of distribution for equal-cost routes:
• Round-robin distribution. IP forwards each packet to a different next hop until
it reaches the end of the list of available next hops; then it repeats the list.
Round-robin distribution makes full use of available resources but may cause
packets to be delivered out of order.
• Source-destination hash distribution based on the source and destination
address. IP forwards all packets with a given source and destination address to
the same next hop. This method increases the chances that the packets will be
delivered in order.
Site Manager Procedure
You do this System responds
1. In the Configuration Manager window,
choose
Protocols
.
The Protocols menu opens.
2. Choose
IP
. The IP menu opens.
3. Choose
Global
. The Edit IP Global Parameters window
opens.
4. Set the
Route Filter Support
parameter.
Click on
Help
or see the parameter
description on page A-24
.
5. Click on
OK
. You return to the Configuration Manager
window.
Komentáře k této Příručce