Brocade Virtual ADX Global Server Load Balancing Guide (Supporting ADX v03.1.00) - Manual (Page 135)

Brocade Virtual ADX Global Server Load Balancing Guide 125
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SNMP traps and Syslog messages
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Virtual ADX#show gslb cache 10.1.1.1 range 2 29
prefix length = 20, prefix = 10.1.0.0, region = ASIA
prefix source = geographic (user-configured), rtt-update,
site = local, Virtual ADX = (10.1.1.102), rtt = 7 (x100 usec)
prefix length = 24, prefix = 10.1.1.0, region = ASIA
prefix source = static,
Syntax: show gslb cache ip-addr range length-lower length-upper
The example above displays all prefix cache entries for address 10.1.0.0, with a prefix length from
2 to 29.
SNMP traps and Syslog messages
The ADX software can generate the following SNMP traps and Syslog messages related to GSLB. All
traps and Syslog messages are enabled by default.
• GSLB ADX device events:
• Establishment of the GSLB protocol connection between the GSLB ADX device and the
remote ADX device
• Termination of the GSLB protocol connection between the GSLB ADX device and the
remote ADX device
• Remote site ADX device events:
• Establishment of the GSLB protocol connection between the remote ADX device and the
GSLB ADX device
• Termination of the GSLB protocol connection between the remote ADX device and the
GSLB ADX device
• Health-check events:
• The GSLB ADX device determines that the IP address for a domain name is active
• The GSLB ADX device determines that the IP address for a domain name is down
• A TCP or UDP port passes the Layer 4 health check and its status changes to “active”
• A TCP or UDP port fails the Layer 4 health check and its status changes to “down”
NOTE
All the health check events are on the GSLB ADX device, not on the remote site ADX devices.
A given domain name can be associated with multiple health check TCP or UDP ports. In that case,
the GSLB ADX device considers an IP address to be active only if all its associated TCP and UDP
ports pass their health checks.
State transitions of individual ports are determined as a part of the health check procedure.
However, state transitions for IP addresses are detected during GSLB decision making (when the
GSLB ADX device is processing a DNS response or when you display zone information). In these
cases, health check status changes affect the GSLB decisions.