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N3K-C3172-BA-L3
Cisco N3K-C3172-BA-L3 Nexus 3172PQ 48-Port 10 Gigabit Switch...
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N3K-C3172-BA-L3 is a Layer 3 optical data center switch with 48 fixed 10G SFP+ access ports, six fixed 40G QSFP+ uplinks, and Base plus LAN Enterprise licensing. The Nexus 3172PQ combines port-side intake airflow with AC power in a 1U chassis for top-of-rack server connections. Access interfaces also support 1G operation for mixed-speed server links. Fixed uplink cages require link media rather than an expansion card, so the purchase configuration does not depend on selecting a removable uplink module. The discontinued N3K-C3172-FA-L3 is the port-side exhaust sibling. Within the Cisco Nexus 3100 family, the intake orientation distinguishes this bundle when matching an existing rack's cooling direction and optical connection requirements.
N3K-C3172-BA-L3 price for new stock is $40,378.75, a 50% saving from the Cisco list price of $80,757.50. N3K-C3172-BA-L3 refurb price is $23,308.95. N3K-C3172-BA-L3 is in stock and available for next-day dispatch. (terms applied)
Request bulk order quote for N3K-C3172-BA-L3 for additional pricing. Browse the full Cisco Nexus 3100 Switches series or explore all Cisco products.
1400 Gbps switching capacity and 1000 Mpps forwarding provide line-rate Layer 2 and Layer 3 throughput across the fixed interfaces. 293W maximum power consumption sets the switch-load allowance for a power plan, while the 143W typical operating figure provides a separate normal-operation reference. BGP, OSPFv2, RIPv2 and EIGRP Stub cover the licensed unicast-routing choices, while PIM-SM, SSM and MSDP support multicast operation. N3K-C3172-BA-L3 carries 4 GB of system memory and 2 GB of boot flash for NX-OS operation and local software storage. A shared 12 MB packet buffer and eight hardware queues per port inform burst and queue planning; buffer monitoring exposes utilization during validation. Management uses the serial-console CLI, SSHv2 or Telnet, with SNMP and XML/NETCONF for monitoring and integration. The Nexus 3172 also supports vPC and LACP for port-channel configurations rather than hardware stacking.
Specify N3K-C3172-BA-L3 as new sealed or certified refurbished, with condition and quantity on the PO. Certified refurbished units are inspected and bench-tested for power-on and POST, clean boot, rated-speed port links and optics bay recognition; firmware is verified and configurations are wiped to factory default. ORM offers up to a 3-year extended warranty for new units and up to 1 year for certified refurbished units, with 30-day returns on every condition, terms apply; Cisco's separate 1-year limited hardware warranty is bounded by the February 28, 2027 support cutoff. Enterprise and volume orders support PO acceptance, government Net-30 and RMA with advance replacement.
| Key Specs | Key Spec Values |
|---|---|
Operating System | NX-OS |
License Tier | Base / LAN Enterprise |
Port Configuration | 48 x 10G SFP+ / 6 x 40G QSFP+ |
Max Power Draw | 293W |
Cooling | 4 x NXA-FAN-30CFM-B |
Lifecycle Status | End of sale February 25, 2022. |
When a purchase must support separate tenant routing domains, VRF-lite provides routing separation and the chassis supports 1024 Layer 3 interfaces across routed ports, SVIs, port channels and subinterfaces. Count all planned interface types together, then specify the routing-domain and interface requirements on the PO before approving the configuration.
When switches are purchased for predeployment staging, POAP supports initial provisioning and one USB port is available for local media. Identify the intended provisioning workflow, console access and configuration handoff without assuming production settings are retained. Specify the image-validation and configuration-delivery expectations before the PO is released.
When a refresh purchase is driven by security-maintenance requirements, vulnerability/security support for this bundle ended February 24, 2025. Remaining hardware service does not restore security-update coverage. Treat a spare purchase separately from a supported-production refresh, and record the required software-maintenance window and acceptance criteria before placing the PO for legacy hardware.
25G server connectivity
N3K-C3172-BA-L3 access interfaces stop at 10G. N9K-C93180YC-FX3 provides 48 ports supporting 1/10/25G for higher-speed optical connections, but is not an assigned direct replacement for this bundle.
Cisco support beyond February 2027
Cisco service for N3K-C3172-BA-L3 ends February 28, 2027. The bundle has no assigned direct replacement; a longer service window requires a separately qualified current switch.
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| N3K-C3172-BA-L3 |  N3K-C3132Q-XL |  N3K-C3132Q-V |  N3K-C3172TQ-32T |  N3K-C3172TQ-10GT | |
|---|---|---|---|---|---|
| Depth | 432 mm | 505 mm | 505 mm | 505 mm | 505 mm |
| Ethernet Technology | 10 Gigabit Ethernet | 40 Gigabit Ethernet | 40 Gigabit Ethernet | 10 Gigabit Ethernet | 10 Gigabit Ethernet |
| Flash Memory | 2 GB | 16 GB | 16 GB | 2 GB | 2 GB |
| Form Factor | Rack-Mount 1U | Rack-Mount 1U | Rack-Mount 1U | Rack-Mount 1U | Rack-Mount 1U |
| Height | 44 mm | 44 mm | 44 mm | 44 mm | 44 mm |
| Manufacturer Part Number | N3K-C3172-BA-L3 | N3K-C3132Q-XL | N3K-C3132Q-V | N3K-C3172TQ-32T | N3K-C3172TQ-10GT |
| Memory | 4 GB | 8 GB | 16 GB | 4 GB | 4 GB |
| Switching Capacity | 1400 Gbps | 2500 Gbps | 2560 Gbps | 1400 Gbps | 1400 Gbps |
| Weight | 8.4 kg. | 9.3 kg | 8.5 kg. | 10 kg | 10 kg. |
| Width | 439 mm | 439 mm | 439 mm | 439 mm | 439 mm |
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Every device is inspected, bench-tested, and firmware-verified, with configurations wiped before dispatch. Additional testing can be arranged to confirm full working condition on request.
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N3K-C3172-BA-L3 is the Nexus 3172PQ reversed-airflow AC bundle. N3K-C3172 identifies the switch model, BA identifies port-side intake with AC power, and L3 identifies the included Base and LAN Enterprise licenses. The bundle name is distinct from the bare chassis part number and must be preserved on the PO.
N3K-C3172-BA-L3 is managed through a serial-console CLI, SSHv2 or Telnet over in-band interfaces or its dedicated Ethernet management port. SNMP versions 1, 2 and 3, XML/NETCONF, and Cisco DCNM provide additional management paths. Python scripting, EEM and POAP support automated operations; select the required access and automation methods before ordering.
N3K-C3172-BA-L3 reached end of sale on February 25, 2022, and Cisco support ends February 28, 2027. Software maintenance ended February 25, 2023, and vulnerability/security support ended February 24, 2025. The bundle has no assigned direct replacement, so a current switch must be selected and qualified separately.
New sealed and certified refurbished N3K-C3172-BA-L3 units are available: ORM provides up to a 3-year extended warranty for new units and up to 1 year for refurbished units. Returns cover 30 days on every condition, terms apply. Cisco's separate 1-year limited hardware warranty is bounded by its February 28, 2027 support cutoff.
N3K-C3172-BA-L3 includes legacy Base and LAN Enterprise licenses. Supported alternatives are NX-OS Essentials subscriptions from three years and NX-OS Advantage subscriptions from three years or perpetual licensing; Advantage requires N9K mode on Nexus 3172PQ. Confirm software mode and entitlements before ordering, because perpetual licenses are device-bound and subscriptions have an expiration date.
N3K-C3172-BA-L3 has six fixed QSFP+ uplinks supporting 40G operation or four 10G breakout connections per uplink. The uplink cages are built into the chassis rather than provided by a removable card. Match each link's transceiver or direct-attach cable to the peer interface and required reach before ordering.
Yes, N3K-C3172-BA-L3 supports BGP through LAN Enterprise licensing, alongside static routing, RIPv2, OSPFv2 and EIGRP Stub under Base licensing. PIM-SM, SSM and MSDP support multicast operation. Hardware resources comprise 16000 prefixes and 16000 host entries; keep these separate limits in the routing plan rather than treating hardware capacity as additional license entitlement.
N3K-C3172-BA-L3 uses N2200-PAC-400W-B AC power supplies with port-side intake airflow and 100-240V AC input. The chassis supports dual redundant supplies, but 400W is each supply's rating, not switch power consumption. Preserve intake airflow when specifying N2200-PAC-400W-B replacements and the matching NXA-FAN-30CFM-B cooling components.
The Nexus 3172PQ provides a 12 MB shared packet buffer and eight hardware queues per port. Buffer capacity is shared rather than assigned as 12 MB to every port. Per-port QoS configuration and advanced buffer monitoring support queue planning; verify burst behavior and queue allocation against the traffic profile during staging.
N3K-C3172-BA-L3 uses port-side intake airflow, whereas N3K-C3172-FA-L3 uses port-side exhaust airflow. Both AC bundles are discontinued. The intake bundle corresponds to racks receiving cool air through the port face; the exhaust bundle corresponds to the opposite orientation. Match the legacy airflow requirement rather than treating the part numbers as interchangeable.
N3K-C3172-BA-L3 uses AC power, whereas N3K-C3172-BD-L3 uses DC power; both bundles are discontinued. The AC bundle corresponds to mains-powered equipment lists, while the DC bundle corresponds to installations already provisioned with a compatible DC feed. N9K-C93180YC-FX3 is the replacement for the discontinued DC bundle.
N3K-C3172-BA-L3 provides 48 SFP+ access ports, while N3K-C3172TQ-32T enables 32 10GBASE-T access ports. Both are discontinued. The first configuration fits optical connections and the second fits smaller copper racks; N9K-C93108TC-FX3P is the current replacement for the copper model, not a direct replacement assigned to this bundle.
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