Cisco ASR 1000 Configuration Guide

12-9
Cisco ASR 1000 Series Aggregation Services Routers SIP and SPA Software Configuration Guide
OL-14127-08
Chapter 12 Overview of the POS SPAs
Displaying the SPA Hardware Type
Path of a Packet in the Egress Direction
The following steps describe the path of an egress packet through the 1-Port OC-192c/STM-64 POS XFP
SPA:
1. The host sends packets to the SPA using the SPI4.2 bus.
2. The SPA stores the data in the appropriate channel’s first-in first-out (FIFO) queue.
3. The SPA passes the packet to the framer.
4. The framer accepts the data and stores it in the appropriate channel queue.
5. The framer adds the FCS and SONET/SDH overhead.
6. The framer sends the data to the XFP optics for transmission onto the network.
Displaying the SPA Hardware Type
To verify information about the SPA hardware that is installed in your Cisco ASR 1000 Series Routers,
you can use the show interfaces command or the show controllers command. There are several other
commands on the Cisco ASR 1000 Series Routers that also provide SPA hardware information.
Table 12-2 shows the hardware description that appears in the show command output for each POS SPA
that is supported on the Cisco ASR 1000 Series Routers.
Example of the show interfaces Command
The following example shows output from the show interfaces pos command on a Cisco ASR 1000
Series Router with a 1-Port OC-192c/STM-64 POS XFP SPA installed in slot 1:
Router# show interfaces POS1/0/0
POS1/0/0 is up, line protocol is up
Hardware is SPA-OC192POS-XFP
MTU 4470 bytes, BW 9952000 Kbit, DLY 100 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation HDLC, crc 16, loopback not set
Ta b l e 12-2 SPA Hardware Descriptions in show Commands
SPA Description in show interfaces command
2-Port OC-3c/STM-1 POS SPA Hardware is Packet over Sonet
4-Port OC-3c/STM-1 POS SPA Hardware is Packet over Sonet
8-Port OC-3c/STM-1 POS SPA Hardware is Packet over Sonet
1-Port OC-12c/STM-4 POS SPA Hardware is Packet over Sonet
2-Port OC-12c/STM-4 POS SPA Hardware is Packet over Sonet
4-Port OC-12c/STM-4 POS SPA Hardware is Packet over Sonet
8-Port OC-12c/STM-4 POS SPA Hardware is Packet over Sonet
1-Port OC-48c/STM-16 POS SPA Hardware is Packet over Sonet
2-Port OC-48c/STM-16 POS/RPR SPA Hardware is Packet over Sonet
4-Port OC-48c/STM-16 POS/RPR SPA Hardware is Packet over Sonet
1-Port OC-192 POS-XFP SPA SPA-OC192POS-XFP

Cisco ASR 1000 Specifications

General

Operating System	Cisco IOS XE
Interfaces	10 Gigabit Ethernet
Power Supply	AC or DC
Number of Total Expansion Slots	Varies by model
Management Port	Console
Redundant Power Supply Supported	Yes
Width	17.5 inches
Memory	Varies by model
Storage	Varies by model
Dimensions (H x W x D)	Varies by model
Weight	Varies by model
Operating Temperature	32°F to 104°F (0°C to 40°C)
Humidity	5% to 95% non-condensing
MTBF	Varies by model
Redundancy	Redundant power supplies, fans, and route processors (depending on model)