Coyote Point Systems Equalizer Especificaciones descargar pdf (Pagina 261)

100

101

the request is not

examined.

balancing decisions can be

based on application specific

criteria through the use of

"Match Rules" on page 317.)

Addressi-

IPv4

IPv4 /

IPv6

IPv4 IPv4 / IPv6

IPv4 /

IPv6

Protocol-

Any TCP protocol.

Any TCP

protoco-

Any UDP

protocol.

HTTP HTTPS

Notes:

l The Layer 4 TCP and UDP clusters can use only IPv4 cluster addresses and can only be used with servers

that have IPv4 addresses.

l The Layer 7 TCP cluster is used to provide IPv6 addressing for Layer 4 protocols, and can support IPv4 and

IPv6 addressing for clusters and servers. The functionality is very much like Layer 4 TCP clusters. This

type of cluster should be used when IPv6 addressing is required for a TCP protocol other than HTTP or

HTTPS.

l L4 UDP clusters are appropriate for connectionless (stateless) applications, such as DNS, TFTP, Voice

over IP (VoIP), and streaming applications -- any application that exchanges short packets with many

clients, and where dropped packets are preferred to delayed packets (i.e., the highest possible network

performance is required). Layer 4 UDP clusters do not currently support IPv6 addressing.

l Layer 7 HTTPS clusters also provide SSL Offloading: all SSL certificate operations are performed by the

cluster, not by the servers behind the cluster, thus improving overall cluster performance.

After you decide on the cluster types you need, you'll then need to determine the additional settings and flags to be

used on the cluster and its server pools. For most configuration, it is often a good idea to start with the defaults and

make incremental changes as you examine traffic passing through your clusters.

Cluster Connection Timeouts

Layer 7 clusters (HTTP / HTTPS) and Layer 4 clusters (TCP / UDP) each use a different set of timeout parameters

as described below.

Note - Setting cluster timeouts to arbitrarily high values can have an adverse effect on cluster performance, and can

result in the cluster no longer processing traffic. We recommend that you start with default timeout values and adjust

the timeouts one by one, in small increments, until you get the timeout behavior that you desire.

HTTP and HTTPS Connection Timeouts

Connections to HTTP and HTTPS clusters are managed closely by Equalizer from the client request to the

response from the server. Equalizer needs to manage two connections for every Layer 7 connection request: the

client connection from which the request originates, and the connection to the server that is the final destination of

the request (as determined by the load balancing policy).

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