Layer 7 TCP Cluster Settings
Layer 7 TCP clusters are used to provide IPv6 addressing for generic Layer 4 protocols, and
can support IPv4 and IPv6 addressing for clusters and servers.
A key feature of EQ/OS 10 is that it is designed to allow L7 HTTP & HTTPS clusters to work with
IPv6. In addition a solution is available that makes L4 clusters
also
work with IPv6. Although
somewhat misleading in name, an L7 cluster is available for use with IPv6 called "L7 TCP". L7 TCP
really has very little to do with HTTP or HTTPS, however, and functions as an L4 cluster.
L4 TCP clusters have special code which deals with the fact that FTP involves two TCP connections
and IP addresses that are passed over the wire. The L4 code is able to rewrite those IP addresses.
The L7 TCP code cannot do that, so it is NOT recommended for FTP.
The L7 TCP cluster:
l
Cannot process match rules the way L7 HTTP & HTTPS clusters do.
l
Cannot examine or manipulate headers
l
Cannot do anything protocol-specific.
This type of cluster is essentially used to:
1. Get a TCP connection on the cluster
2. Pick a server
3. Connect the client to server
In general, the basic function of the Layer 7 TCP cluster is to provide IPv6 addressing for generic
Layer 4 protocols, and support IPv4 and IPv6 addressing for clusters and servers. The
functionality is very much like Layer 4 TCP cluster and should be used when IPv6 addressing is
required for a TCP protocol other than HTTP or HTTPS. (The Layer 4 TCP and UDP clusters can use
only IPv4 cluster addresses and can only be used with servers that have IPv4 addresses.)
For additional information on cluster types used with Equalizer refer to
for a
summary of cluster types.
The following are descriptions of the functionality and configuration parameters used with Layer 7
TCP Clusters. The figure below shows a Layer 7 TCP
Configuration Settings
screen.
Copyright © 2014 Coyote Point Systems, A Subsidiary of Fortinet, Inc.
All Rights Reserved.
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Equalizer Administration Guide
Summary of Contents for Equalizer GX Series
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