Enabling layer 7 health check – Brocade Virtual ADX Server Load Balancing Guide (Supporting ADX v03.1.00) User Manual
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Brocade Virtual ADX Server Load Balancing Guide
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Layer 7 health checks
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NOTE
The Brocade Virtual ADX uses its own management IP address or a source IP address configured on
the Brocade Virtual ADX as the source IP address in the health check packets (as opposed to a
virtual IP address). If the real servers are in the same subnet as the Brocade Virtual ADX, then the
health checks can use the Brocade Virtual ADX’s management IP address. Otherwise, the health
checks use a source IP address.
Enabling Layer 7 health check
All Layer 7 health checks are disabled by default. You can enable a health check globally or locally.
NOTE
The Brocade Virtual ADX considers a Layer 7 health check to be disabled only if the health check is
disabled on both the global and local levels. If the health check is enabled globally, locally, or both,
the Brocade Virtual ADX considers the health check to be enabled. Refer to
To locally enable a Layer 7 health check, enter a command such as the following at the real server
level of the CLI.
Virtual ADX(config-rs-jet)#port http keepalive
Syntax: [no] port port keepalive
If you use the no port command, you are locally disabling the health check. The health checks are
locally disabled by default.
The port variable is the port name or number. Enter one of the following values. If the port is not
one of the following well-known port, specify the port number.
•
dns (port 53)
•
ftp (port 21). Ports 20 and 21 both are FTP ports but in the Brocade Virtual ADX, the name
“ftp” corresponds to port 21.
•
http (port 80)
•
imap4 (port 143)
•
ldap (port 389)
•
nntp (port 119)
•
ntp (port 123)
•
pop2 (port 109)
•
pop3 (port 110)
•
radius (UDP port 1812)
•
radius-old (UDP port 1645, which is used in some older RADIUS implementations instead of
port 1812)
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smtp (port 25)
•
snmp (port 161)
•
ssl (port 443)
•
telnet (port 23)
•
tftp (port 69)
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