R3204P16-HP Load Balancing Module Load Balancing Configuration Guide-6PW101

11
Item Descri
p
tion
Health Monitoring Type
Select a health monitoring method that a real service group uses to
monitor a real service:
• TCP: Monitors the availability of an application port by
establishing TCP connections.
• ICMP: Monitors the reachability of a server by sending ICMP
packets.
• HTTP: Monitors the availability of an HTTP service through HTTP
access.
• FTP: Monitors the availability of an FTP server through FTP.
• DNS: Monitors the availability of a DNS server through DNS.
• RADIUS: Monitors the availability of a RADIUS server through
RADIUS authentication.
• SSL: Monitors the availability of an SSL server through an SSL
connection.
TIP:
When you adopt SSL health monitoring, you must configure the Client
Certificate; otherwise, health monitoring cannot be performed.
You can display and configure health monitoring by selecting Load
Balance > Health Monitor. For more information, see “Setting health
monito
ring parameters.”
Real Service Troubleshooting
Select a method that the real service group uses to handle existing
connections when it detects that a real service fails, including the
following:
• Keep Connection: Does not actively terminate the connection with
the failed real service. Keeping or terminating the connection
depends on the timeout mechanism of the protocol.
• Disconnection: Actively terminates the connection with the failed
real service.
• Redirection: Redirects the connection to another available real
service in the real service group.
TIP:
At present, redirection is applied to firewall load balancing mode and
other methods are applied to server load balancing.
Advanc
ed
Configu
ration
Enable Slow-Online
When you add a server or a network device to a cluster, because
some servers or network devices cannot take on a large amount of
services immediately, you can enable the slow-online function. With
slow-online enabled, when the server or network device goes online,
the LB device does not assign services to it in the standby time. When
the standby time is reached, the LB device assigns services to the
server or network device gradually within the slow-online time. When
the slow-online time is reached, the LB device assigns services to the
server or network device normally.
Standby Time
Ramp-Up Time
Return to Server load balancing configuration task list.