Brocade Communications Systems ServerIron ADX 12.4.00 - Manual (Page 191)

ServerIron ADX Global Server Load Balancing Guide 179
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Displaying GSLB information
1
This example shows the RTT prefix cache entry that contains site IP address 192.1678.2.1. The
prefix source line indicates that the prefix cache entry that matches the site address was added
statically. Notice that a prefix cache entry can have more than one source. In this case, the prefix
was statically configured but a specific entry (listed below under the domain name
“www.brocade.com”) was created when the GSLB ServerIron ADX received RTT information from
the site ServerIron ADX for a site address within the prefix.
In the following example, a statically generated entry that the GSLB ServerIron ADX created is
displayed. The statically generated entries have an 8-bit prefix, whereas the prefix for dynamic
entries is 20 bits long by default.
ServerIronADX(config)# show gslb cache 61.1.1.1


prefix length = 8, prefix = 60.0.0.0, region = ASIA

prefix source = geographic
This display shows the following information.
TABLE 14 GSLB policy information
This field... Displays...
prefix length Specifies the length of the address prefix. The GSLB ServerIron ADX
initially generates the prefix tree using the IANA (geographic) allocated
address prefixes, which have variable lengths. Dynamically generated
cache entries (generated by client queries) have a fixed prefix length, as
defined by the RTT cache-length parameter. The default is 20.
prefix Specifies the prefix. All client addresses beginning with this prefix are
aggregated in a single RTT entry.
region Specifies the geographic location of this client prefix. This field can have
one of the following values:
•
ASIA
•
EUROPE
•
N-AM: North America
•
S-AM: South America
prefix source Specifies the prefix source. This field can have one of the following
values:
•
geographic: displayed for static entries (entries generated by the
GSLB ServerIron ADX itself when initializing the RTT cache)
•
client query: displayed for entries generated by client queries
•
static: displayed for static entries entered by you (refer to “Adding
static prefix cache entries” on page 55)
NOTE: If a static entry is long enough (greater than 20 bits) and has
been accessed by a client query, the entry can show both
sources.
Notice that a prefix cache entry can have more than one source.
site Specifies the name of the site.
ServerIron ADX Specifies the name and IP address of the ServerIron ADX.
rtt Specifies the RTT value.