User guide

17-34 E
XTREME
W
ARE
S
OFTWARE
U
SER
G
UIDE
S
ERVER
L
OAD
B
ALANCING
(SLB)
config slb global [ping-check | tcp-port-check |
service-check] frequency <seconds> timeout
<seconds>
Configures default health checking
frequency and timeout period. If the health
check frequency and timeout are not
specified for a specific node or VIP, the
global values are used. Specify one of the
following service checkers:
■
ping-check – L3-based pinging of the
physical node. Default ping frequency is
one ping generated to the node each 10
seconds. If the node does not respond
any ping within a timeout period of 30
seconds (3 ping intervals), the node is
considered inoperable.
■
tcp-port-check – L4-based TCP
port open/close testing. Default values
are 30 seconds for frequency and 90
seconds for timeout.
■
service-check – L7-based
application-dependent checking. Default
values are 60 seconds for frequency
and 180 seconds for timeout.
config slb global ftp userid <userid> password
{encrypted} {<password>}
Configures the default parameters for L7
service checking. If the password is not
provided, you are prompted for the
password twice.
config slb global http url <url_string> match-string
[<match_string> | any-content]
Configures the default parameters for L7
service checking.
config slb global nntp newsgroup <newsgroup> Configures the default parameter for L7
service checking.
config slb global persistence-level
[same-vip-same-port | same-vip-any-port | any-vip]
config slb global persistence-method [per-packet |
per-session]
config slb global pop3 userid <userid> password
{encrypted} {<password>}
Configures the default parameter for L7
service checking.
config slb global smtp <dns_domain> Configures the default parameter for L7
service checking.
config slb global synguard
max-unacknowledge-SYNs <num_syns>
Configures the num_syns value that is
used to trigger the SYN-guard feature.
Table 17-4: Advanced SLB Commands
Command Description