Layer 7 health check for an unknown port – Brocade Virtual ADX Server Load Balancing Guide (Supporting ADX v03.1.00) User Manual
Page 199
Brocade Virtual ADX Server Load Balancing Guide
183
53-1003247-01
Layer 7 health checks
4
SSL interface: ssl_read_data return error !!!
ssl_receive_data but tcb->ssl is null
SSL cleanup: can't find key ???
SSL interface: ssl_read_data return error !!!
The Brocade Virtual ADX normally stops processing the rest of the data and releases the SSL
control block data structure. However when the Brocade Virtual ADX does not do that, the Brocade
Virtual ADX finds the SSL data structure is null and prints these messages.
Layer 7 health check for an unknown port
You can use Layer 7 health check parameters for the following known ports to check the health of
unknown ports:
•
TCP ports:
•
HTTP (port 80)
•
FTP (port 21)
•
IMAP4 (port 143)
•
LDAP (port 389)
•
POP3 (port 110)
•
SMTP (port 25)
•
Telnet (port 23)
•
UDP ports:
•
DNS (port 53)
Configuring an unknown TCP port to use Layer 7 TCP health checks
You can use the Brocade Virtual ADX’s Layer 7 health check mechanism for the following TCP
applications on any TCP port number:
•
HTTP (port 80)
•
FTP (port 21)
•
IMAP4 (port 143)
•
LDAP (port 389)
•
POP3 (port 110)
•
SMTP (port 25)
•
Telnet (port 23)
The health check mechanisms for these ports are described in
To configure an unknown TCP port to use the Layer 7 health check for one of the applications listed
above, enter commands such as the following.
Virtual ADX(config)#server port 999
Virtual ADX(config-port-999)#tcp keepalive protocol smtp
These commands configure port profile parameters for port 999. The second command in the
example makes the port a TCP port and assigns the SMTP Layer 7 health check to the port.
Syntax: [no] server port TCP-portnum