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Along with faster, higher performance, enterprise users also require high availability to protect against business interruptions and loss of productivity. Auto-port aggregation can provide
higher-performance server access, an increased level of redundancy, and protection from link outages-with lowered network management complexity, as well.
HP auto-port aggregation provides the following benefits:
- Bandwidth scalability: network managers can scale their networks to improve aggregate throughput.
- High Availability: it provides redundancy or link aggregation of computer ports.
- Load balancing: HP APA supports true load balancing and failure recovery capabilities and distributes traffic evenly across the aggregated links.
- Single MAC address: because ports aggregated with HP APA share a single, logical MAC address, there is no need to assign individual addresses to aggregated
ports.
- Flexibility: ports can be aggregated to achieve higher performance whenever network congestion occurs.
- Investment protection: because the HP APA utilizes Ethernet technology, it provides a natural upgrade path for current Ethernet installations, leveraging
existing end-stations, management tools and training.
HP APA can be configured in any of four ways:
Manual mode - This mode should be used to configure Link Aggregates on HP UNIX® servers when connected to a switch which only supports
manual configuration.
Auto with PAgP - This mode should be used when configuring Link Aggregates on HP UNIX® servers when connected to a switch which
supports Cisco's Fast EtherChannel protocol (PAgP).
Auto with LACP- This mode should be used when configuring Link Aggregates on HP UNIX® servers when connected to IEEE 802.3ad (LACP)
supported switches.
LAN monitor - This mode should be used when configuring Fail-over groups on HP UNIX® servers.
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