
9-1
Chapter 9
Configuring IP Policies
This chapter provides an overview of IP policies and describes the Site Manager
windows you use and the parameters you set to create accept and announce
policies for RIP, OSPF, BGP-3, BGP-4, and EGP.
This chapter contains the following sections:
• IP Routing Table - page 9-1
• Configuring Accept Policies - page 9-5
• Configuring Announce Policies - page 9-21
IP Routing Table
Every IP router maintains a table of current routing information. The routing table
manager receives routing updates from the network through the Internet protocols
running on the router. Periodically, the routing table manager issues routing
updates through the protocols. Figure 9-1 shows a router configured with all of the
Internet protocols supported by Bay Networks: OSPF, RIP, BGP-3, BGP-4, and
EGP. The arrows indicate the direction of flow of routing information between the
network and the protocols running on the router, between the protocols and the
routing table manager, and between the routing table manager and the routing
table.
Note:
The parameters you set when you construct IP accept and announce
policies are a superset of the parameters you set when you construct import
and export filters. We currently support both IP accept and announce policies
and import and export filters. In a future release, support for import and
export filters will be dropped.
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