Ip Route Exchange Protocols - Brocade Communications Systems ICX 6650 Configuration Manual

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Each IP forwarding cache entry contains the IP address of the destination, and the IP address and
MAC address of the next-hop router interface to the destination. If the destination is actually an
interface configured on the Layer 3 Switch itself, as shown here, then next-hop information
indicates this. The port through which the destination is reached is also listed, as well as the VLAN
and Layer 4 QoS priority associated with the destination if applicable.
To display the IP forwarding cache, refer to
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 "Displaying and modifying system parameter
default settings" section in the Brocade ICX 6650 Platform and Layer 2 Switching Configuration
Guide.
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 "Displaying and modifying system
parameter default settings" section in the Brocade ICX 6650 Platform and Layer 2 Switching
Configuration Guide. The ip-qos-session parameter controls the size of the session table.

IP route exchange protocols

Brocade 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:
•
•
•
Brocade ICX 6650 Layer 3 Routing Configuration Guide
53-1002603-01
IP Address Next Hop
192.168.1.11 DIRECT
Layer 4 Quality-of-Service (QoS) policies
IP access policies
Routing Information Protocol (RIP)
Open Shortest Path First (OSPF)
Border Gateway Protocol version 4 (BGP4)
Chapter 3, "RIP (IPv4)"
Chapter 5, "OSPF version 2 (IPv4)"
Chapter 7, "BGP (IPv4)"
IP configuration overview
MAC
0000.0000.0000
"Displaying the forwarding cache"
Type Port Vlan Pri
PU n/a 0
on page 121.
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