Ip Route Exchange Protocols; Ip Multicast Protocols - Dell PowerConnect B-FCXs Configuration Manual

26
Overview
NOTE
You cannot add static entries to the IP forwarding cache, although you can increase the number of
entries the cache can contain. Refer to the section
default settings"
Layer 4 session table
The Layer 4 session provides a fast path for forwarding packets. A session is an entry that contains
complete Layer 3 and Layer 4 information for a flow of traffic. Layer 3 information includes the
source and destination IP addresses. Layer 4 information includes the source and destination TCP
and UDP ports. For comparison, the IP forwarding cache contains the Layer 3 destination address
but does not contain the other source and destination address information of a Layer 4 session
table entry.
The Layer 2 Switch or Layer 3 Switch selects the session table instead of the IP forwarding table for
fast-path forwarding for the following features:
•
•
To increase the size of the session table, refer to the section
parameter default settings"
session table.

IP route exchange protocols

Layer 3 Switches support the following IP route exchange protocols:
•
•
•
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, refer to
the following:
•
•
•

IP multicast protocols

Layer 3 Switches also support the following Internet Group Membership Protocol (IGMP) based IP
multicast protocols:
•
•
For configuration information, refer to
790
on page 321.
Layer 4 Quality-of-Service (QoS) policies
IP access policies
on page 321. The ip-qos-session parameter controls the size of the
Routing Information Protocol (RIP)
Open Shortest Path First (OSPF)
Border Gateway Protocol version 4 (BGP4)
Chapter 28, "Configuring RIP (IPv4)"
Chapter 29, "Configuring OSPF Version 2 (IPv4)"
Chapter 30, "Configuring BGP4 (IPv4)"
Protocol Independent Multicast – Dense mode (PIM-DM)
Protocol Independent Multicast – Sparse mode (PIM-SM)
"Displaying and modifying system parameter
"Displaying and modifying system
Chapter 25, "Configuring IP Multicast
PowerConnect B-Series FCX Configuration Guide
Protocols".
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