Cisco Nexus 3000 Series Switches overview
The Cisco Nexus® 3000 Series Switches are a comprehensive portfolio of 1, 10, and 40 Gigabit Ethernet switches built from a Switch-on-a-Chip (SoC) architecture. Introduced in April 2011, this series of switches provides line-rate Layer 2 and 3 performance and is suitable for Top-of-the-Rack (ToR) architecture. This series of switches has established itself as a leader in High-Frequency Trading (HFT), High-Performance Computing (HPC), and big data environments by pairing high performance and low latency with innovations in performance visibility, automation, and time synchronization.
Figure 1.
Cisco Nexus 3548 and 3524 Switch
The Cisco Nexus 3548 and 3524 have the following hardware configuration:
● 48 fixed Enhanced Small Form-Factor Pluggable (SFP+) ports (1 or 10 Gbps); the Cisco Nexus 3524 enables only 24 ports
● Dual redundant hot-swappable power supplies
● Four individual redundant hot-swappable fans
● One 1-PPS timing port, with the RF1.0/2.3 QuickConnect connector type*
● Two 10/100/1000 management ports
● One RS-232 serial console port
● One USB port
● Locator LED
● Locator LED button
Support for both port-side exhaust and port-side intake airflow schemes is available. Port-side exhaust airflow is useful when the port side of the switch sits on a hot aisle and the power supply side sits on a cold aisle. Port-side intake airflow is useful when the power supply side of the switch sits on a hot aisle and the port side sits on a cold aisle.
Colored handles on each fan or power supply clearly indicate the airflow direction, as seen in Figures 2 and 3.
Figure 2.
Cisco Nexus 3548 and 3524 with blue handles indicating port-side exhaust airflow
Figure 3.
Cisco Nexus 3548 and 3524 with red handles indicating port-side intake airflow
Table 1 shows the Quick Specs.
| Product Code |
N3K-C3548P-XL |
| Physical |
- ●48 fixed SFP+ ports (1 or 10 Gbps)
- ●Dual redundant hot-swappable power supplies
- ●Four individual redundant hot-swappable fans
- ●One 1-PPS timing port, with the RF1.0/2.3 QuickConnect connector type
- ●One 10/100/1000-Mbps management port
- ●One RS-232 serial console port
- ●Two USB ports
- ●Locator LED
- ●Locator LED button
|
| Performance |
- ●960-Gbps switching capacity
- ●Forwarding rate of 720 mpps
- ●Line-rate traffic throughput (both Layer 2 and 3) on all ports
- ●Configurable MTUs of up to 9216 bytes (jumbo frames)
|
Physical dimensions
(H x W x D) |
1.72 x 17.3 x 18.38 in. (4.36 x 43.9 x 46.7 cm) |
| Weight |
17.4 lb (7.9 kg) |
Table 2 shows the supported accessories.
| Model |
Description |
| SFP-10G-SR |
10GBASE-SR SFP+ module (MMF) |
| SFP-10G-LR |
10GBASE-LR SFP+ module (single-mode fiber [SMF]) |
| SFP-10G-ER |
Cisco 10GBASE-ER SFP+ module for SMF |
| GLC-TE |
1000BASE-T SFP |
| GLC-SX-MM |
GE SFP, LC connector SX transceiver (MMF) |
| GLC-SX-MM D |
1000BASE-SX SFP transceiver module, MMF, 850 nm, DOM |
| NXA-FAN-30CFM-F |
N2K/3K Individual Fan, Forward airflow (port side exhaust) |
| NXA-FAN-30CFM-B |
N2K/3K Individual Fan, Reversed airflow (port side intake) |
| N2200-PAC-400W |
N2K/3K 400W AC Power Supply, Forward airflow (port side exhaust) |
| N2200-PAC-400W-B |
N2K/3K 400W AC Power Supply, Reversed airflow (port side intake) |
| N2200-PDC-400W |
N2K/3K 400W DC Power Supply, Forward airflow (port side exhaust) |
| N3K-PDC-350W-B |
N2K/3K 350W DC Power Supply, Reversed airflow (port side intake) |
| N3548-LAN1K9= |
Nexus 3548 Layer 3 LAN Enterprise License (Requires N3K-BAS1K9 License) |
| N3548-ALGK9= |
Nexus 3500 Algo Boost License |
Table 3 shows the comparison.
| Product Code |
N3K-C3548P-XL |
N3K-C36180YC-R |
| Ports |
48 fixed SFP+ ports (1 or 10 Gbps) |
48 SFP ports; each supports native 25, 10, or 1 Gigabit Ethernet mode
6 QSFP28 ports; each supports native 100 Gigabit Ethernet and 4 x 25 Gigabit Ethernet modes
|
Physical dimensions
(H x W x D) |
1.72 x 17.3 x 18.38 in. (4.36 x 43.9 x 46.7 cm) |
1.72 x 17.3 x 26.85 in. (4.4 x 43.9 x 68.2 cm) |
| Weight |
17.4 lb (7.9 kg) |
27.1 lb (12.3 kg) |
N3K-C3548P-XL Specification
N3K-C3548P-XL Specifications
|
| Physical |
48 fixed SFP+ ports (1 or 10 Gbps)
Dual redundant hot-swappable power supplies
Four individual redundant hot-swappable fans
One 1-PPS timing port, with the RF1.0/2.3 QuickConnect connector type
One 10/100/1000-Mbps management port
One RS-232 serial console port
Two USB ports
Locator LED
Locator LED button
|
| Performance |
960-Gbps switching capacity
Forwarding rate of 720 mpps
Line-rate traffic throughput (both Layer 2 and 3) on all ports
Configurable MTUs of up to 9216 bytes (jumbo frames)
|
| Typical operating power |
112W |
| Maximum power |
213W |
| Typical heat dissipation |
383 BTUs per hr |
| Maximum heat dissipation |
727 BTUs per hr |
| Hardware specifications common to all switches |
| Mode |
Normal mode |
Warp mode |
| Number of MAC addresses |
64,000 |
8000 |
| Number of IPv4 unicast routes |
24,000 |
4000 |
| Number of IPv4 hosts |
64,000 |
8000 |
| Number of IPv4 multicast routes |
8000 |
8000 |
| Number of VLANS |
4096 |
| Number of ACL entries |
4096 |
| Number of spanning-tree instances |
Rapid Spanning Tree Protocol (RSTP): 512
Multiple Spanning Tree (MST) Protocol: 64
|
| Number of EtherChannels |
24 |
| Number of ports per EtherChannel |
24 |
| Buffer size |
6 MB shared among 16 ports; 18 MB total |
| System memory |
16 GB |
| Boot flash memory |
16 GB |
| Number of power supplies |
2 (redundant) |
| Power supply types |
· AC (forward and reversed airflow)
· DC (forward and reversed airflow)
|
| Input voltage |
100 to 240 VAC |
| Frequency |
50 to 60 Hz |
| Power supply efficiency |
89 to 91% at 220V |
| Cooling |
Forward and reversed airflow schemes
Forward airflow: Port-side exhaust (air enters through fan tray and power supplies and exits through ports)
Reversed airflow: Port-side intake (air enters through ports and exits through fan tray and power supplies)
Four individual, hot-swappable fans (3+1 redundant)
|
| Dimensions (height x width x depth) |
1.72 x 17.3 x 18.38 in. (4.36 x 43.9 x 46.7 cm) |
| Weight |
17.4 lb (7.9 kg) |
| Operating temperature |
32 to 104° F (0 to 40°C) |
| Storage temperature |
-40 to 158° F (-40 to 70°C) |
| Relative humidity (operating) |
· 10 to85% noncondensing
· Up to 5 days at maximum (85%) humidity
· Recommend ASHRAE data center environment
|
| Relative humidity (nonoperating) |
5 to 95% noncondensing |
| Altitude |
0 to 10,000 ft (0 to 3000m) |
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