Configuring a Health-Check Ping

The health-check ping will be associated with an ESI group, along with servers, so that controller will send ICMP echo requests to each server in the group and mark the server down if the controller does not hear from the server. The health-check parameters used in this example are:

Frequency—30 seconds. (The default is 5 seconds.)

Retry-count—3. (The default is 2.)

Timeout—2 seconds. (The default is 2 seconds.)

Use these CLI commands to configure a health-check ping method:

esi ping profile_name

frequency seconds retry-count count timeout seconds

Configuring ESI Servers

Here are the ESI server CLI configuration tasks:

Configure server mode to be NAT.

Configure the trusted IP address (the server IP address to which packets should be redirected).

To redirect to a different port than the original destination port in the packet, configure an alternate destination port.

Use these CLI commands to configure an ESI server and identify its associated attributes:

esi server server_identity dport destination_tcp/udp_port mode {bridge nat route}

trusted-ip-addr ip-addr[health-check]

Configure an ESI Group, Add the Health-Check Ping and ESI Servers

Use these CLI commands to configure an ESI server group, identify its associated ping health-check method, and associate a server with this group:

esi group name

ping profile_name server server_identity

Using the ESI Group in a Session Access Control List

Use these CLI commands to define the redirection filter for sending traffic to the ESI server.

ip access-list session policy

user any svc-http redirect esi-group group direction both

CLI Configuration Example 1

esi ping externalcp_ping frequency 30 retry-count 3

esi server external_cp1 dport 8080

mode nat trusted-ip-addr 10.1.1.1

esi server external_cp2 dport 8080

mode nat

Dell PowerConnect W-Series ArubaOS 6.2 User Guide

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Dell 6.2 Configuring a Health-Check Ping, Configuring ESI Servers, Using the ESI Group in a Session Access Control List

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