Table Of Contents
Packet over SONET/SDH Port Adapter for the Cisco 7200 and 7500
The PA-POS-OC3MM, PA-POS-OC3SML and PA-POS-OC3SMI are now End of Sales (EOS) as of July 31, 2006 for all supported platforms. For more details, please see product bulletin:
Using the Point-to-Point Protocol (PPP), the POS PA maps IP packets into SONET/SDH frames in hardware and transports them over the optical SONET/SDH network. PPP was designed as a standard method of communicating over point-to-point links. The POS PA supports both RFC 1619, "PPP over SONET/SDH" and RFC 1662, "PPP in HDLC-Like Framing."
Superior IP Performance
Specifically designed to maximize distributed switching performance, the POS PA provides line-rate OC-3c/STM1 throughput for average size packets in the VIP2-50. In addition, a single POS PA/VIP2-50 configuration in a Cisco 7500 provides an aggregate throughput of up to 138,000 packets-per-second in each direction using 64 byte packets. A POS PA in a Cisco 7200 with an NPE-200 provides an aggregate throughput of up to 94,000 packets-per-second in each direction using 64 byte packets.
Platform Flexibility and Increased Port Density
The POS PA is designed to provide maximum switching performance when a single POS PA is installed in a single VIP2-50. For applications that require maximum port density and/or lower system cost, the VIP2-50 also supports any combination of port adapters including dual POS PAs. Though a single POS PA alone can utilize the entire switching capacity of the VIP2-50, dual port adapters in the same VIP2-50 share the switching and bandwidth capacity.
The POS PA extends the benefits of Packet over SONET/SDH connectivity to the Cisco 7200. Providing tremendous network flexibility, the POS PA can be deployed on the Cisco 7200 in SONET/SDH networks that require a large number of distributed multi-service edge routers. Up to three POS PAs can be installed in the same Cisco 7200.
Fault-Tolerant Backbone Connectivity
The POS PA supports APS (and MSP) for network designs in which the Cisco 7200 or 7500 is connected directly to SONET/SDH equipment that also support APS such as Add/Drop Multiplexors (ADM).
Improved Payload Scrambling and Error Detection
The POS PA also supports both CRC-16 and CRC-32 for error detection in transmitted data. Either CRC-16 or CRC-32 can be optionally enabled, and can either operate concurrently with the ATM Forum payload scrambling. In general, CRC-16 provides backward compatibility with existing equipment, while CRC-32 provides more robust advanced error detection.
•SNMP agent v1 (RFC 1155-1157)
•MIB II (RFC 1213)
POS PA LED Indicators
POS PA LED
Indicates the POS PA is powered and active.
Indicates that optical signal is sensed on the interface.
Indicates that a data packet was received on the interface.
•RFC1619—Point-to-Point Protocol over SONET/SDH
•RFC1662—Point-to-Point Protocol in HDLC-Like Framing
•Operating temperature: 0 to 70°C
•Storage temperature: -40 to 85°C
•Relative humidity: 10 to 90%, noncondensing
•CSA C22.2 No. 950-M29
Electromagnetic Emissions Certifications
•FCC Class A
•EN55022A Class B
•CISPR-22 Class B
•VCCI Class 2
•IEC 801-2, 3, 4, 5, 6, 11