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Configuring IP
The switch or routing switch selects the session table instead of the IP forwarding table for fast-path forwarding for
the following features:
• Policy-Based Routing (PBR)
• Layer 4 Quality-of-Service (QoS) policies
• IP access policies
To increase the size of the session table, see the “Configuring Basic Features” chapter of the Installation and
Getting Started Guide. The ip-qos-session parameter controls the size of the session table.
IP Route Exchange Protocols
HP ProCurve routing switches support the following IP route exchange protocols:
• Routing Information Protocol (RIP)
• Open Shortest Path First (OSPF)
• Border Gateway Protocol version 4 (BGP4)
All these protocols provide routes to the IP route table. You can use one or more of these protocols, in any
combination. The protocols are disabled by default. For configuration information, see the following:
• “Configuring RIP” on page 7-1
• “Configuring OSPF” on page 8-1
• “Configuring BGP4” on page 10-1
IP Multicast Protocols
HP ProCurve routing switches also support the following Internet Group Membership Protocol (IGMP) based IP
multicast protocols:
• Protocol Independent Multicast – Dense mode (PIM-DM)
• Protocol Independent Multicast – Sparse mode (PIM-SM)
• Distance Vector Multicast Routing Protocol (DVMRP)
For configuration information, see
“Configuring IP Multicast Protocols” on page 9-1.
NOTE: The HP 6208M-SX supports IGMP and can forward IP multicast packets. See the “Configuring Basic
Features” chapter of the Installation and Getting Started Guide.
IP Interface Redundancy Protocols
You can configure an HP ProCurve routing switch to back up an IP interface configured on another HP ProCurve
routing switch. If the link for the backed up interface becomes unavailable, the other routing switch can continue
service for the interface. This feature is especially useful for providing a backup to a network’s default gateway.
HP ProCurve routing switches support the following IP interface redundancy protocols:
• Virtual Router Redundancy Protocol (VRRP) – A standard router redundancy protocol based on RFC 2338.
You can use VRRP to configure HP routing switches and third-party routers to back up IP interfaces on other
HP routing switches or third-party routers.
• Virtual Router Redundancy Protocol Extended (VRRPE) – An HP extension to standard VRRP that adds
additional features and overcomes limitations in standard VRRP. You can use VRRPE only on HP routing
switches.
• Standby Router Protocol (SRP) – An HP router redundancy protocol developed before VRRP and VRRPE
that provides some of the features of VRRP and some of the features of VRRPE. You can use SRP only on
the HP 9304M, HP 9308M, and HP 6308M-SX routing switches.
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