HP PROCURVE 6208M-SX Installation And Getting Started Manual Page 168

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HP routing switches are configured to be compliant with RFC 1583 OSPF V2 (RFC 1583) by default. You also can
configure HP routing switches to run the latest OPSF standard, RFC 2178.
See the "Configuring OSPF" chapter in the Advanced Configuration and Management Guide for information.
Border Gateway Protocol (BGP4) Routing
BGP4 allows you to configure HP routing switches to route traffic between Autonomous Systems (ASs) and to
maintain loop-free routing. BGP allows the routers within the AS to communicate even when those routers are
running different Interior Gateway Protocols (IGPs) such as RIP and OSPF.
The HP implementation of BGP4 supports many advanced BGP4 features including peer groups, confederations,
route reflection, and dynamic route refresh.
See the "Configuring BGP4" chapter in the Advanced Configuration and Management Guide for information.
IP Access and QoS Filters
You can control the IP traffic that the HP routing switch receives and forwards by defining IP access policies. An
IP access policy can filter on source IP address, destination IP address, UDP port number, or TCP port number.
For example, if you want to permit Telnet access only to specific IP addresses, you can create permit policies for
those IP addresses.
You also can use IP access policies to specify the Quality of Service (QoS) packets that certain Layer 4 session
should receive. A Layer 4 session is a combination of the source and destination addresses and the TCP or UDP
port number. For more information about QoS, see the "Quality of Service (QoS)" chapter in the Advanced
Configuration and Management Guide.
You assign policies to individual ports by defining access policy groups. An access policy group identifies a list of
policies and a set of ports to which the policies are applied. Access policies are applied in the order you list them
in the access policy group.
IP Route Filters
You can use IP route filters to control the following:
Routes learned (cached) by the routing switch. IP route filters applied to inbound traffic affect the routes that
the routing switch learns.
Routes advertised by the routing switch. Filters assigned to outbound traffic affect the routes that the routing
switch advertises.
You specify whether the filter is applied to incoming or outgoing traffic by adding individual filters to filter groups
and assigning the groups to specific ports.
For details on RIP filters and how to configure them, see the "Configuring RIP" chapter in the Advanced
Configuration and Management Guide.
You can control the RIP neighbors from which the routing switch learns RIP updates by defining RIP neighbor
filters. Neighbor filters either permit or deny RIP updates from the specified neighbor.
Policy-Based Routing
Policy-Based Routing (PBR) allows you to use ACLs and route maps to selectively modify and route IP packets
based on their source IP address.
You can configure the routing switch to perform the following types of PBR based on a packet's Layer 3 and Layer
4 information:
Select the next-hop gateway.
Specify the default next-hop IP address if there is no explicit next-hop selection for the packet.
Send the packet to the null interface (null0).
Software Overview
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