Cisco Catalyst 6500 Series Hardware Installation Guide

3-3
Catalyst 6500 Series Switch SIP, SSC, and SPA Hardware Installation Guide
OL-9041-04
Chapter 3 Catalyst 6500 Series Switch SPA Overview
Bandwidth Oversubscription
To access Software Advisor, click Login at Cisco.com, type “Software Advisor” in the SEARCH box,
and click GO. Click the link for the Software Advisor tool.
Choose a product family or enter a specific product number to search for the minimum supported
software release needed for your hardware.
Bandwidth Oversubscription
Oversubscribing the bandwidth limit recommendations of a router can result in decreased or degraded
performance. For this reason, it is important to determine the amount of bandwidth used by the SPAs on
the router and verify that the total bandwidth used by all SPAs does not exceed the recommended
bandwidth limit of the router. It is also important not to exceed the bandwidth of the SIP. For information
on SIP bandwidth, see
Chapter 2, “SIP and SSC Support.”
Table 3-2 provides information about the bandwidth for each port (per-port bandwidth) on a SPA, as well
as the cumulative bandwidth (total bandwidth) for all ports available on the SPA.
Ta b l e 3-2 SPA Bandwidth Capacity
SPA Per-Port Bandwidth
Number of
Ports
Total Bandwidth
2-Port Channelized T3 SPA 44.736 Mbps 2 89.47 Mbps
4-Port Channelized T3 SPA 44.736 Mbps 4 178.94 Mbps
8-Port Channelized T1/E1 SPA 1.544 Mbps (T1)
2.048 Mbps (E1)
8 12.35 Mbps (T1)
16.38 Mbps (E1)
2-Port OC-3c/STM-1 ATM SPA 155.52 Mbps 2 311.04 Mbps
4-Port OC-3c/STM-1 ATM SPA 155.52 Mbps 4 622.08 Mbps
1-Port Channelized STM-1/OC-3 SPA 155 Mbps 1 155 Mbps
1-Port OC-48c/STM-16 ATM SPA 2488 Mbps 1 2488 Mbps
2-Port OC-3c/STM-1 POS SPA 155.52 Mbps 2 311.04 Mbps
4-Port OC-3c/STM-1 POS SPA 155.52 Mbps 4 622.08 Mbps
1-Port OC-12c/STM-4 POS SPA 622.08 Mbps 1 622.08 Mbps
1-Port OC-192c/STM-64 POS/RPR
SPA
9.95 Gbps 1 9.95 Gbps
1-Port OC-192c/STM-64 POS/RPR
XFP SPA
9.95 Gbps 1 9.95 Gbps
1-Port OC-192c/STM-64 POS/RPR
VSR Optics SPA
9.95 Gbps 1 9.95 Gbps
2-Port Clear Channel T3/E3 SPA 44.736 Mbps (T3)
34.368 Mbps (E3)
2 89.47 Mbps (T3)
68.74 Mbps (E3)
4-Port Clear Channel T3/E3 SPA 44.736 Mbps (T3)
34.368 Mbps (E3)
4 178.94 Mbps (T3)
137.47 Mbps (E3)
1-Port 10-Gigabit Ethernet SPA 10 Gbps 1 10 Gbps
2-Port Gigabit Ethernet SPA 10 Gbps 2 20 Gbps

Cisco Catalyst 6500 Series Specifications

General

Brand	Cisco
Model	Catalyst 6500 Series
Category	Switch
Language	English