Brocade Communications Systems ServerIron ADX 12.4.00 Manual Manual page 183

TABLE 11
This field...
ZONE
HOST
IP addresses
Source
Type
State
ServerIron ADX Global Server Load Balancing Guide
53-1002437-01
GSLB zone and host application information
Displays...
The zone name. The name that appears here is the name you specified
when you configured the zone information.
NOTE: This field appears only if you do not specify the zone name when
The host name. The name that appears here is the name you specified
when you configured the host information.
The column of IP addresses lists the IP addresses the authoritative DNS
server associated with the host name in the DNS reply. These are the
servers that contain the content for the host. In this example, the
servers contain the content for www.brocade.
After evaluating the addresses using the GSLB policy, the GSLB
ServerIron ADX marks each address that passes the algorithm with an
asterisk (*). An IP address that does not have an asterisk in front of it
has not passed the GSLB algorithm and cannot be selected as the
"best" site.
NOTE: If DNS override is enabled, only the addresses configured in the
The value following each server IP address indicates how the ServerIron
ADX learned the address. This field can have one of the following values:
•
•
•
In the example above, the ServerIron ADX learned about all the IP
addresses associated with the zone name from the DNS server; thus,
the source is listed as "dns".
The next value indicates the type of address, which can be one of the
following:
•
•
The state of the server. The ServerIron ADX determines the state based
on the results of the Layer 7 health checks sent to the server. The
ServerIron ADX sends Layer 7 health checks for each host application
you associate with the zone.
The state can be one of the following:
•
•
NOTE: If the server has multiple applications, all the applications must
NOTE: The ServerIron ADX also uses the results of the health check, if
Displaying GSLB information
you display the information. If you specify the zone name,
information for only that zone is displayed.
host's IP list have asterisks and are valid choices for the best
site. Refer to "Enabling DNS override"
cfg: The address is one that you associated with the host as part of
the DNS override feature. Refer to
page 33.
d/c: The address was learned from the DNS server and also is one
that you associated with the host.
dns: The address was learned from the DNS server.
v-ip: The address is a VIP configured on a ServerIron ADX.
real-ip: The address is a real server.
ACTIVE: The server passed the Layer 4 and Layer 7 health checks
and is presumed to be available.
DOWN: The server failed a health check. If any of the health checks
are failed, the GSLB ServerIron ADX disqualifies this site from being
the "best" site.
pass the health check.
the server passes the check, in the TCP and App columns under
FlashBack Delay, described below.
1
on page 33.
"Enabling DNS override" on
171