Cisco PA-A3-OC3SML PA-A3-OC3SML= Manuel D’Utilisation

Cisco Confidential

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Note: Note that any port adapters not currently supported on the VIP2-50 (such as Token Ring and 100VG) can not be paired with an ATM

port adapter in the above configurations. Also, the combination of Compression Service Adapter (CSA) and/or Encryption Service Adapter

(ESA) and an ATM port adapter is not supported in the same VIP2.

The PA-A3-OC3SMM, PA-A3-OC3SMI, and PA-A3-OC3SML are designed to provide maximum switching performance when a single port

adapter is installed in a single VIP2-50. A single PA-A3-OC3SMM, PA-A3-OC3SMI, or PA-A3-OC3SML in a VIP2-50 provides up to

approximately 85,000 packets per second of switching capacity in each direction using 64-byte packets. Note that a single PA-A3-OC3SMM,

PA-A3-OC3SMI, or PA-A3-OC3SML alone can use the entire switching capacity of a single VIP2-50.

For applications that require maximum port density or lower system cost, dual port adapter configurations with the

OC-3/STM-1 version of the PA-A3 in the same VIP2-50 are now supported. The two port adapters in the same VIP2-50 share approximately

95,000 packets per second of switching capacity in each direction using 64-byte packets.

The VIP-50 provides up to 400 megabits per second (mbps) of aggregate bandwidth depending on the port adapter combinations. In most

dual port adapter configurations with the PA-A3-OC3SMM, PA-A3-OC3SMI, or PA-A3-OC3SML, the combination of port adapters will

exceed this aggregate bandwidth capacity.

Consequently, the performance shared between the two port adapters installed in the same VIP2-50 will be limited by the aggregate

switching capacity (95 kpps) at small packet sizes, and by the aggregate bandwidth (400 mbps) at large packet sizes.

These performance caveats must be considered when designing ATM networks with the PA-A3-OC3SMM, PA-A3-OC3SMI, or

PA-A3-OC3SMIPA-A3-OC3MMPA-A3-OC3MM. Depending on the design, the performance of dual port adapters in the same VIP2-50

may or may not be acceptable.

PA-A3-OC3MM, PA-A3-OC3SMI and PA-A3-OC3SML dual port adapter configurations on the VIP2-50 are supported in IOS Release

11.1(21)CC (orderable as 11.1(21)R) or higher. All other PA-A1 and PA-A3 configurations were supported when the port adapters initially

shipped.

For information on the Cisco 7500 and 7200 ATM port adapter, refer to following URL:

http://www.cisco.com/warp/customer/cc/cisco/mkt/core/adap/atm/

PA-A3-OC3SMM

x

x

x

1

PA-A3-OC3SMI

x

x

x

1

PA-A3-OC3SML

x

x

x

1

1. New as of Cisco IOS

®

 Release 11.1(21)CC (orderable as 11.1(21)R).