Extreme Networks WM-4T1i Specifikace stáhnout pdf (Strana 256)

256 Extreme Networks Consolidated Hardware Guide

BlackDiamond 6800 Series I/O Modules

• Network capacity planning and trend analysis

• Network monitoring

• Workload characterization

• User profiling

• Data warehousing and mining

Each PoS module can maintain two million flow records. Per-flow statistics are reported in the NetFlow,

Version 1 format, which groups flow records together into UDP datagrams for export to a flow-collector

device.

The PoS module also provides a NetFlow distribution feature to provide a growth path to more scalable

and robust collection architectures. This feature allows a single PoS port to distribute statistics across

multiple groups of flow-collector devices in a load-balanced manner. The function also includes a

health-check feature that significantly improves the reliability of the collection architecture. The

health-checker ensures that only responsive flow-collector devices are included in the effective export

distribution lists.

To further enhance scalability, the PoS module also offers filters and filter-based aggregation options

that allow you to configure a PoS port to maintain statistics selectively for only those flows matching

specified filters. The aggregation options can further reduce the volume of exported data by enabling a

single set of statistics to be maintained for all the flows that match an aggregation filter.

Automatic Protection Switching. Automatic Protection Switching, or APS, is a physical-layer

resiliency feature specified in the SONET standards. Multiplex Section Protection, or MSP, is the APS

equivalent in the SDH standard, which is also supported by the PoS module. Throughout this guide, the

terms APS and Automatic Protection Switching are used to refer to the protection switching features of

both standards.

Of the various protection switching modes specified in the SONET/SDH standards, the BlackDiamond

6800 series switches use the linear 1+1 architecture to protect tributary SONET lines. In the linear 1+1

architecture, there is one protection line for each working line. If the working line fails, traffic is

automatically switched to the protection line. You can also control whether traffic switched to the

protection line is automatically switched back to the working line when it is restored to service.

The Extreme Networks implementation supports network configurations where:

• Working and protection lines are terminated in the same PoS module.

• Working and protection lines are terminated in different PoS modules residing in the same

BlackDiamond 6800 series switch.

• Working and protection lines are terminated in different PoS modules residing in different

BlackDiamond 6800 series switches.

Service Provider Features

The PoS modules provide the following features for service provider environments:

• DSCP mapping

• VLAN ID (VID) tag mapping

• VLAN ID (VID) tag nesting

• Port tunneling

1 2 ... 251 252 253 254 255 256 257 258 259 260 261 ... 335 336

Žádné komentáře

Extreme Networks WM-4T1i Specifikace Strana 256