Enterasys Matrix DFE-Gold Series Configuration Manual page 654

Configuring Load Sharing Network Address Translation (LSNAT)
Parameters
type both | ping |
app [upd] | acv [udp]
ping‐int seconds
ping‐retries number
app‐int seconds
app‐retries number
Defaults
If not specified, ping will be chosen as the fail detection type. Unless the UDP option is specified,
app defaults to TCP.
Mode
Router command, SLB Real Server Configuration mode: Matrix>Router(config‐slb‐real)#
Usage
The "no" form of this command resets the fail detection configuration parameters to default
values.
Examples
This example shows how to set the ping interval to 10 seconds and the retry number to 6 for the
real server at IP 10.1.2.3 in the "httpserver" server farm:
Matrix>Router(config)#ip slb serverfarm httpserver
Matrix>Router(config-slb-sfarm)#real 10.1.2.3 port 80
Matrix>Router(config-slb-real)#faildetect ping-int 10 ping-retries 6
Matrix>Router(config-slb-real)#inservice
This example sets the app type to UPD for the real server at IP 10.1.2.4 in the "SF‐UDP" server
farm:
Matrix>Router(config)#ip slb serverfarm SF-UPD
Matrix>Router(config-slb-sfarm)#real 10.1.2.4 port 7
19-14 LSNAT Configuration
Specifies that the failure detection mechanism will be ping, TCP or UDP
application, ACV, or that both application TCP and ping methods will
be used as follows:
• acv ‐ Set or reset auto command verification as the fail detect
mechanism
• app ‐ Set or reset application port monitoring as the fail detect
mechanism
• both ‐ Set or reset ping and application TCP as the fail detect
mechanisms
• ping ‐ Set or reset ping as the fail detect mechanism
The ping type determines whether of not a real server in a server farm
will be pinged for connectivity before being selected as a potential
LSNAT server. Application and ACV default to TCP. You can optionally
specify UDP for each type.
Specifies an ICMP ping failure detection interval in seconds. Valid
values are 1 ‐ 200. Default is 5 seconds.
Specifies the number of times an ICMP ping failure will result in a retry.
Valid values are 1 ‐ 200. Default is 4.
Specifies an application failure detection interval in seconds. Default is
15 seconds.
Specifies the number of times a TCP application failure will result in a
retrial. Default is 3.
faildetect (real server)