Brocade Communications Systems Brocade Serveiron 1000 - Manual (Page 12)

A ServerIron ADX permits the definition of up to 256 contexts, roles or soft partitions. ADX
administrators in any one domain are isolated from the others and have no visibility into
the objects or services running within those other contexts.
Q Can I configure a single-port LACP trunk on ServerIron?
A Yes. ServerIron ADX allows the creation of a single-port LACP trunk, a popular diagnostic
technique for unidirectional link failure detection.
Q Can I configure a multi-slot trunk starting with any port number?
A Yes. ServerIron ADX offers great flexibility for trunk definition, allowing the creation of
trunks with odd or even numbers of member ports, beginning with an odd or even
numbered port. Additionally, trunks can be created across member ports that are
spread over multiple line modules inside the ServerIron chassis.
Q Do ServerIron ADX switches provide Global Server Load Balancing (GSLB)?
A All ServerIron switches, including the ADX 1000, 4000, and 10000 series, can redirect
client traffic geographically among multiple sites based on availability, load, and
response time. These switches also measure client/server proximity as defined by round-
trip delay and geographic location. All these features can work in conjunction with the
network’s existing DNS servers, minimizing network disruption when implementing
GSLB. ServerIron ADX switches continually monitor multiple sites to detect any changes
in servers or services due to varying health and traffic conditions. Configurable site load
thresholds enable organizations to align health checking parameters with each site’s
server and service capabilities.
In addition, ServerIron ADX switches use geographic site selection to keep requests
within continental domains. Continuous application traffic monitoring helps create a
dynamic knowledge base that enables more intelligent GSLB methodologies and site
selection criteria.
The ServerIron ADX GSLB software provides the following key functions:
• Acts as a DNS proxy to transparently intercept and modify the DNS responses,
thereby directing users to the best site
• Leverages existing DNS servers and minimizes disruption to the existing DNS
environment
• Provides continuous site monitoring to detect changes in site health conditions
• Provides configurable settings to fine-tune individual site load thresholds
• Monitors and selects sites by measuring site, server, and application responsiveness
• Adds an evolutionary knowledge base that enables more intelligent site selection as
more clients access the site
In addition, ServerIron ADX switches provide a unique multisite redundancy solution with
Virtual IP (VIP) Route Health Injection. This capability matches VIP and server health with
intelligent route propagation to the Internet through standards-based routing protocols.
This approach provides business continuity to IP applications that do not rely on DNS for
service name resolution.
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