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Table 3 details the comparison of the 6600-48G/48G-4XG switches, the 2910al-48G, and the 3500yl-48G
switches in more detail.
2910al-48G 6600-48G 6600-48G-4XG 3500yl-48G
Rack height 1U 1U 1U 1U
1-Gb RJ-45 48 48 48 48
1-Gb SFP 4* 4* – 4*
10-Gb SFP+ 4 (2 X2/2 CX4) – 4 4 (2 X2/2 CX4)
Max. 1-Gb wire-speed ports 48 48 48 48
Max. 10-Gb wire-speed ports 4 – 4 2
10-Gb port buffering 6 MB** – 36 MB 4.5 MB
Management console port RJ-45 RJ-45 RJ-45 Serial DB-9
Out-of-band mgmt. port – RJ-45 10/100 Ethernet RJ-45 10/100 Ethernet –
Power save option – Yes Yes –
Power supply 1 internal PS
(external PS option)
2 internal PS slots
(ships with 1 PS)
2 internal PS slots
(ships with 1 PS)
1 internal PS
(external PS option)
Routing/Switching capacity 176.0 Gbps 96.0 Gbps 176.0 Gbps 149.8 Gbps
Fabric capacity 176.0 Gbps 96.0 Gbps 176.0 Gbps 153.6 Gbps
Switch throughput 130.9 mpps 71.4 mpps 130.9 mpps 111.5 mpps
MAC address entries 16K 64K 64K 64K
ACL entries 0.5K 3K 3K 3K
Routing table entries 2K 10K 10K 10K
* Dual-personality ports
** 6 MB shared across all 1-Gb and 10-Gb ports
Note: The 6600-48G-4XG switch does not support 1-Gb mGBIC/SFP capability. The last four ports are exclusively for 10-Gb SFP+ transceivers; they are
not capable of running at Gigabit speeds.
Table 3: 6600-48G/48G-4XG switches vs. 2910al-48G and 3500yl-48G switches
With line-rate processing across all four 10-Gb SFP+ ports, the 6600-48G-4XG switch is an effective solution to
provide true non-blocking connectivity to 40-Gb servers with 40-Gb uplink capability (along with the increased
packet-buffer capabilities of the 6600 series for its 10-Gb ports—18 MB of packet buffering, in this case, per
pair of 10-Gb ports for 36-MB total in available 10-Gb memory. A similarly configured 3500yl-48G switch
with its 4 x 10-Gb yl module option would be oversubscribed if connected to 40-Gb servers with only 28.8-Gb
maximum throughput. The 3500yl-48G switch is also limited to 4.5 MB of packet buffer memory across all
10-Gb ports).
Ports
•48 10/100/1000Base-T RJ-45 connectors
•4 10-GbE SFP+ ports (10-GbE-only speeds)
Management connectivity
•RJ-45 serial console port
•RJ-45 Ethernet out-of-band management port