Can C9500-48Y4C-A run StackWise Virtual?

Yes. C9500-48Y4C-A joins two chassis into one logical switch with StackWise Virtual, which its Network Advantage license includes. Stateful switchover and in-service software upgrade run over the StackWise Virtual link, and multichassis EtherChannel connects downstream devices.

What does Network Advantage on C9500-48Y4C-A include?

Network Advantage on C9500-48Y4C-A adds StackWise Virtual, BGP, VRF, VXLAN with BGP-EVPN, MPLS, and MACsec-256 with WAN MACsec to the Layer 2 and routed-access feature set. Every new order needs a term-based subscription at the Network Advantage tier.

Can two C9500-48Y4C-A switches be paired with StackWise Virtual, and which ports carry the link?

Yes, exactly two switches join into one logical switch, and the virtual link runs over fixed front-panel ports of the chassis. StackWise Virtual requires the Network Advantage license, which C9500-48Y4C-A carries. On the Catalyst 9500 it was first supported in IOS XE 16.8.1 and 16.9.1. Set some SFP28 or QSFP28 ports aside for the link, because those ports no longer face downstream devices.

Which routing and high-availability features does Network Advantage add on C9500-48Y4C-A?

Network Advantage on C9500-48Y4C-A adds EIGRP, IS-IS, HSRP, LISP, TrustSec with SGT, mVPN, GIR, NSF and PTP (IEEE 1588v2). PTP is a Network Advantage feature on the Catalyst 9500, so C9500-48Y4C-E cannot run it. The feature set is fixed by the -A suffix and needs no separate order.

Does C9500-48Y4C-A support 1600W AC or DC power supplies?

No. The 1600W AC and DC supplies are not supported on C9500-48Y4C-A, which accepts only C9K-PWR-650WAC-R, C9K-PWR-650WACL-R and C9K-PWR-930WDC-R. Any of the three gives a heat output of 1,856 BTU/hr, so size room cooling for 1,856 BTU/hr per chassis. The AC supplies take 90-264 VAC input, and C9K-PWR-930WDC-R is the unit for a DC feed.

What surge and hold-up ratings does C9K-PWR-650WACL-R have in C9500-48Y4C-A?

C9K-PWR-650WACL-R is rated for 2.5 kV common-mode and 1 kV differential surge, with at least 12 ms hold-up at 100% load and over-power protection at 140%. Per the Catalyst 9500 hardware installation guide, a European dual-supply setup must fill both slots with it. Its redundant order PID is C9K-PWR-650WACLR/2.

Which SSD options can C9500-48Y4C-A take, and from which release?

C9500-48Y4C-A accepts only the pluggable M.2 SATA drives C9K-F1-SSD-240G, C9K-F1-SSD-480G and C9K-F1-SSD-960G, supported from IOS XE 16.8.1a. Capacity options are 240 GB, 480 GB and 960 GB for container application hosting. The SSD slot sits on the rear panel with the power supplies, fan module and ground terminal.

What operating temperature and altitude limits apply to C9500-48Y4C-A?

C9500-48Y4C-A operates from 0 to 40°C at altitudes up to 10,000 ft, and at 45°C the maximum operating altitude falls to 6,000 ft. Operating humidity must stay noncondensing. These limits come from the datasheet environmental table shared by the fixed models in the family, so they apply to either license variant.

How many security and QoS ACL entries does C9500-48Y4C-A support?

C9500-48Y4C-A supports up to 27,000 IPv4 and 13,500 IPv6 security ACL entries, and up to 16,000 IPv4 and 8,000 IPv6 QoS ACL entries. A custom template starts the input and output ACL pool at 4,000 by default and can grow it up to 27,000. Choose the template before sizing the access policy.

How much memory and packet buffer does C9500-48Y4C-A have?

C9500-48Y4C-A has 16 GB of DRAM and 16 GB of flash, with a 36 MB unified buffer per ASIC on its UADP 3.0 platform. The ASIC applies queuing at both ingress and egress. The buffer is a platform-level figure from the datasheet and is shared by the UADP 3.0 high-performance models.

Which fan trays does C9500-48Y4C-A not support?

C9500-48Y4C-A does not support FAN-T4-R or C9K-T2-FANTRAY. It takes only C9K-T1-FANTRAY, which holds up to four variable-speed fans. Airflow runs front to back on every fan, and a failed fan can be replaced in service. The chassis keeps running through a single fan failure, so no second fan tray is needed for redundancy.

C9500-48Y4C-A – 48×1/10/25G SFP28 Ports – 4×40/100G QSFP28 Uplinks – Network Advantage

Name: C9500-48Y4C-A - Cisco Catalyst 9500 48-Port 25G Switch
Brand: Cisco
SKU: C9500-48Y4C-A
Price: 8728.00 USD
Availability: InStock
Rating: 4.89 (9 reviews)

Brand: Cisco Category: Catalyst 9500 Switches Model: C9500-48Y4C-A

Rated 4.89 out of 5 based on 9 customer ratings

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C9500-48Y4C-A Description

The C9500-48Y4C-A is a Cisco Catalyst 9500 Series High Performance fixed switch for campus core and aggregation layers that terminate 25G fiber. The switch has 48 1G/10G/25G SFP28 ports, four fixed 40G/100G QSFP28 uplinks and 3.2 Tbps of switching capacity, and its UADP 3.0 ASIC holds up to 82,000 MAC entries. The -A suffix carries Network Advantage, which adds StackWise Virtual, BGP, VXLAN and MACsec-256 on top of the Layer 2 and routed-access feature set.

Quick Specs

Parameter	Specification
Product ID	C9500-48Y4C-A
Network license	Network Advantage
Downlink ports	48 x 1G/10G/25G SFP28
Fixed uplink ports	4 x 40G/100G QSFP28
Network module support	C9500-NM-8X and C9500-NM-2Q are not supported
ASIC	Cisco UADP 3.0
Switching capacity	Up to 3.2 Tbps
Forwarding rate	Up to 1 Bpps
Default power supply	C9K-PWR-650WAC-R 650W AC
Power supply options	C9K-PWR-650WAC-R, C9K-PWR-650WACL-R, C9K-PWR-930WDC-R
Fan modules	C9K-T1-FANTRAY, up to 4 fans
Minimum software release	Cisco IOS XE Fuji 16.8.1a

Product Performance

Switching Capacity

Forwarding Rate

SFP28 Downlink Count

Key Features

48 Ports Of 1G, 10G And 25G

All 48 downlink ports are SFP28 cages that accept 1G, 10G or 25G optics and cables. A single 1 RU chassis can therefore mix legacy 10G links with new 25G ones.

Fixed 40G/100G Uplinks

Four QSFP28 ports are built into the chassis and run at 40G or 100G. The chassis has no network module bay, so these four ports are the whole uplink capacity.

3.2 Tbps UADP 3.0 Forwarding

The UADP 3.0 ASIC switches up to 3.2 Tbps at line rate for packets of 187 bytes and larger, with a forwarding rate of up to 1 Bpps.

Network Advantage Feature Set

The license tier adds BGP, VRF, VXLAN with BGP-EVPN, MPLS and MACsec-256 with WAN MACsec. These cover segmented core designs that the lower license tier cannot run.

StackWise Virtual Core Pairing

Two chassis can be joined into one logical switch with multichassis EtherChannel toward downstream devices. SSO and ISSU run over the StackWise Virtual Link.

Redundant Power And Fan Tray

Two power supply slots take 650W AC, 650W AC low-voltage or 930W DC supplies. Cooling comes from a fan tray with up to four hot-swappable fans, and the chassis keeps running through a single fan failure.

Application Scenarios

25G Campus Aggregation

In a campus distribution block, the switch terminates 25G fiber links from access closets on its SFP28 ports and carries the combined traffic to the core over QSFP28 uplinks.

Paired Core With StackWise Virtual

Two switches in a campus core can run as one logical node under StackWise Virtual, with multichassis EtherChannel toward the distribution layer and SSO and ISSU running over the virtual link.

Server Aggregation At 25G

A small data center row can land 25G server and storage links on the SFP28 ports, with 40G or 100G uplinks running back to the spine from the fixed QSFP28 ports.

Product Comparison

Parameter	C9500-48Y4C-A	C9500-48Y4C-E	C9500-24Y4C-A
Downlink ports	48 x 1G/10G/25G SFP28	48 x 1G/10G/25G SFP28	24 x 1G/10G/25G SFP28
Fixed uplink ports	4 x 40G/100G QSFP28	4 x 40G/100G QSFP28	4 x 40G/100G QSFP28
Switching capacity	Up to 3.2 Tbps	Up to 3.2 Tbps	Up to 2.0 Tbps
Forwarding rate	Up to 1 Bpps	Up to 1 Bpps	Up to 1 Bpps
MAC addresses	Up to 82,000 entries	Up to 82,000 entries	Up to 82,000 entries
IPv4 routes	Up to 256,000 (indirect + direct)	Up to 256,000 (indirect + direct)	Up to 256,000 (indirect + direct)
Network license	Network Advantage	Network Essentials	Network Advantage
Default power supply	C9K-PWR-650WAC-R 650W AC	C9K-PWR-650WAC-R 650W AC	C9K-PWR-650WAC-R 650W AC

C9500-48Y4C-A and C9500-48Y4C-E are the same 48-port SFP28 chassis with four 40G/100G QSFP28 uplinks, and the license is the only difference: C9500-48Y4C-A ships with Network Advantage and C9500-48Y4C-E with Network Essentials. Network Essentials covers Layer 2, routed access with OSPF up to 1,000 routes, and MACsec-128, so designs that need StackWise Virtual, BGP, VXLAN with BGP-EVPN, MPLS, or MACsec-256 with WAN MACsec stay on C9500-48Y4C-A. A site that terminates 24 or fewer SFP28 links can order C9500-24Y4C-A instead, which keeps the same four uplinks and 650W AC default supply but reaches 2.0 Tbps against 3.2 Tbps.

Ordering Checklist

Subscription tier: Add a term-based Catalyst Software Subscription or Cisco DNA subscription at the Network Advantage tier. Every new order needs a subscription at the same tier as the network license.
Second power supply: The configurator preselects a second supply; C9500-SPS-NONE removes it, and a redundant supply is ordered as C9K-PWR-650WAC-R/2. Check this line, or the switch ends up with one supply by mistake or an unneeded second one.
Low-voltage supply: Fill both slots when C9K-PWR-650WACL-R is chosen. One C9K-PWR-650WACL-R in a dual-supply configuration causes faults and service interruption.
Power cords: Select a power cord for each supply, because the configuration cannot be completed without a cord selection.
RFID option: Choose either C9500-RFID or C9500-RFID-NONE. The choice is mandatory at order time and cannot be added after the switch ships.

Optional Add-ons

Model	Description
C9K-PWR-650WAC-R	650W AC power supply supported on C9500-48Y4C-A-A-A
C9K-PWR-650WACL-R	650W AC low-voltage power supply supported on C9500-48Y4C-A-A-A
C9K-PWR-930WDC-R	930W DC power supply supported on C9500-48Y4C-A-A-A
C9K-T1-FANTRAY	Catalyst 9500 fan tray for Catalyst 9500 high-performance switches
C9500-DNA-A-3Y	Cisco DNA Advantage 3-year term subscription license for the C9500-48Y4C-A hardware family
C9500-DNA-A-5Y	Cisco DNA Advantage 5-year term subscription license for the C9500-48Y4C-A hardware family
C9500-DNA-A-7Y	Cisco DNA Advantage 7-year term subscription license for the C9500-48Y4C-A hardware family
C9500-DNA-48Y4CEA	Cisco DNA Essentials-to-Advantage upgrade license specific to the 48-port 25G SKU
C9500-ACCKITH-19I=	19-inch rack mount accessory kit for Cisco Catalyst 9500 Series High-End switches
C9500-ACCKITH-23I=	23-inch rack mount accessory kit for Cisco Catalyst 9500 Series High-End switches
C9500-4PTH-KIT=	Four-point mounting extension rails and brackets for Cisco Catalyst 9500 Series High-End switches
C9500-RFID	RFID tag selection for C9500 high-performance switches including Catalyst 9500 high-performance switches
C9500-RFID-NONE	No-RFID selection for C9500 high-performance switch ordering

C9500-48Y4C-A Switch Front Panel

1	48 1G/10G/25G SFP28 ports	5	USB mini Type B console port
2	Uplink ports	6	RFID (Optional)
3	Ethernet management port	7	Console port (RJ-45 Serial)
4	Reset button	8	USB 3.0 host port

C9500-48Y4C-A Switch Rear Panel

The switch rear panel includes StackWise connectors, StackPower or XPS connectors, ports, fan modules, and power supply modules.

1	Power supply modules	5	PSU 1
2	Grounding pad	6	Fan 1
3	Fan modules	7	Fan 0
4	SATA SSD module	8	PSU 0

Components Delivered in the Shipping Box

The shipping box contains the model of the switch you ordered and other components needed for installation. Some components are optional, depending on your order.

1	Cisco Catalyst 9500 Series switch with optional network module¹ (power supply and fan modules not shown)	7	Eight number-8 Phillips flat-head 0.312″ long screws
2	Product documentation and compliance document	8	Two M4.0 x 20mm Phillips pan-head screws (Black color)
3	Two 19-inch mounting brackets	9	Ground lug and two M4.0 x 8mm Phillips pan-head screws
4	Two Cable guides	10	(Optional) AC power cord²
5	Four number-12 pan-head 0.50″ long screws	11	(Optional) RJ-45 console cable¹
6	Four number-10 pan-head 0.625″ long screws	12	(Optional) USB console cable¹

Specifications

Parameter	Specification	Parameter	Specification
Product ID	C9500-48Y4C-A	Product type	High-performance fixed core and aggregation switch
Network license	Network Advantage	Minimum software release	Cisco IOS XE Fuji 16.8.1a
Downlink ports	48 x 1G/10G/25G SFP28	Uplink ports	4 x 40G/100G QSFP28
Console port	RJ-45; USB mini Type B	Management port	Ethernet management port
USB port	USB 3.0 host port	Switching capacity	Up to 3.2 Tbps
Forwarding rate	Up to 1 Bpps	ASIC	Cisco UADP 3.0
DRAM	16 GB	Flash	16 GB
MAC addresses	Up to 82,000 entries	VLAN IDs	4,094
IPv4 routes	Up to 256,000 (indirect + direct)	IPv6 routes	Up to 256,000 (indirect + direct)
IPv4 host entries	Up to 90,000 (direct + ARP)	IPv6 host entries	Up to 90,000 (direct + NDP)
Multicast routes	Up to 32,000 (IPv4) / 32,000 (IPv6)	ACL entries	Up to 27,000 (IPv4) / 13,500 (IPv6)
QoS entries	Up to 16,000 (IPv4) / 8,000 (IPv6)	Jumbo frames	9,216 bytes
Power supply slots	2	Power supply options	C9K-PWR-650WAC-R, C9K-PWR-650WACL-R, C9K-PWR-930WDC-R
AC input voltage	90 to 264 VAC	Heat dissipation	1,856 BTU/hr with any supported supply
Fan modules	C9K-T1-FANTRAY, up to 4 fans	Airflow	Front-to-back
Acoustic noise	No greater than 71.5 LwAd dB	Dimensions (H x W x D)	1.73 x 17.5 x 18.0 in. (4.39 x 44.45 x 45.72 cm)
Rack units	1 RU	Operating temperature	0°C to 40°C (32°F to 104°F)
Storage temperature	-20°C to 65°C (-4°F to 149°F)	Operating humidity	5% to 90% noncondensing
Storage humidity	5% to 95% noncondensing	Operating altitude	Up to 10,000 ft at 40°C
MTBF	316,960 hours	Safety certifications	IEC 60950-1 with amendments, UL 60950-1, CAN/CSA-C22.2 No. 60950-1-07, EN 60950-1:2006, AS/NZS 60950.1:2011, GB 4943-95, NOM-019-SCFI-1998
EMC certifications	47 CFR Part 15 Class A, CISPR 32/EN 55032 Class A, ICES-003 Class A, EN 61000-3-2/3-3, EN 55024

Quality Certifications

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Rated 4.89 out of 5

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Every piece of hardware we buy goes through an authenticity check. This one was spotless. Wish the lead time was a bit shorter, but product quality made up for it.

Kathryn Taylor

Posted on 20/01/2026

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Build quality matches what we receive from authorized distributors.

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Every order has been exactly as described. That kind of consistency builds real trust.

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Exactly what it claimed to be. Genuine product.

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A wise choice for procurement. The service is excellent.

Questions & Answers

Can C9500-48Y4C-A run StackWise Virtual?
Yes. C9500-48Y4C-A joins two chassis into one logical switch with StackWise Virtual, which its Network Advantage license includes. Stateful switchover and in-service software upgrade run over the StackWise Virtual link, and multichassis EtherChannel connects downstream devices.
What does Network Advantage on C9500-48Y4C-A include?
Network Advantage on C9500-48Y4C-A adds StackWise Virtual, BGP, VRF, VXLAN with BGP-EVPN, MPLS, and MACsec-256 with WAN MACsec to the Layer 2 and routed-access feature set. Every new order needs a term-based subscription at the Network Advantage tier.
Can two C9500-48Y4C-A switches be paired with StackWise Virtual, and which ports carry the link?
Yes, exactly two switches join into one logical switch, and the virtual link runs over fixed front-panel ports of the chassis. StackWise Virtual requires the Network Advantage license, which C9500-48Y4C-A carries. On the Catalyst 9500 it was first supported in IOS XE 16.8.1 and 16.9.1. Set some SFP28 or QSFP28 ports aside for the link, because those ports no longer face downstream devices.
Which routing and high-availability features does Network Advantage add on C9500-48Y4C-A?
Network Advantage on C9500-48Y4C-A adds EIGRP, IS-IS, HSRP, LISP, TrustSec with SGT, mVPN, GIR, NSF and PTP (IEEE 1588v2). PTP is a Network Advantage feature on the Catalyst 9500, so C9500-48Y4C-E cannot run it. The feature set is fixed by the -A suffix and needs no separate order.
Does C9500-48Y4C-A support 1600W AC or DC power supplies?
No. The 1600W AC and DC supplies are not supported on C9500-48Y4C-A, which accepts only C9K-PWR-650WAC-R, C9K-PWR-650WACL-R and C9K-PWR-930WDC-R. Any of the three gives a heat output of 1,856 BTU/hr, so size room cooling for 1,856 BTU/hr per chassis. The AC supplies take 90-264 VAC input, and C9K-PWR-930WDC-R is the unit for a DC feed.
What surge and hold-up ratings does C9K-PWR-650WACL-R have in C9500-48Y4C-A?
C9K-PWR-650WACL-R is rated for 2.5 kV common-mode and 1 kV differential surge, with at least 12 ms hold-up at 100% load and over-power protection at 140%. Per the Catalyst 9500 hardware installation guide, a European dual-supply setup must fill both slots with it. Its redundant order PID is C9K-PWR-650WACLR/2.
Which SSD options can C9500-48Y4C-A take, and from which release?
C9500-48Y4C-A accepts only the pluggable M.2 SATA drives C9K-F1-SSD-240G, C9K-F1-SSD-480G and C9K-F1-SSD-960G, supported from IOS XE 16.8.1a. Capacity options are 240 GB, 480 GB and 960 GB for container application hosting. The SSD slot sits on the rear panel with the power supplies, fan module and ground terminal.
What operating temperature and altitude limits apply to C9500-48Y4C-A?
C9500-48Y4C-A operates from 0 to 40°C at altitudes up to 10,000 ft, and at 45°C the maximum operating altitude falls to 6,000 ft. Operating humidity must stay noncondensing. These limits come from the datasheet environmental table shared by the fixed models in the family, so they apply to either license variant.
How many security and QoS ACL entries does C9500-48Y4C-A support?
C9500-48Y4C-A supports up to 27,000 IPv4 and 13,500 IPv6 security ACL entries, and up to 16,000 IPv4 and 8,000 IPv6 QoS ACL entries. A custom template starts the input and output ACL pool at 4,000 by default and can grow it up to 27,000. Choose the template before sizing the access policy.
How much memory and packet buffer does C9500-48Y4C-A have?
C9500-48Y4C-A has 16 GB of DRAM and 16 GB of flash, with a 36 MB unified buffer per ASIC on its UADP 3.0 platform. The ASIC applies queuing at both ingress and egress. The buffer is a platform-level figure from the datasheet and is shared by the UADP 3.0 high-performance models.
Which fan trays does C9500-48Y4C-A not support?
C9500-48Y4C-A does not support FAN-T4-R or C9K-T2-FANTRAY. It takes only C9K-T1-FANTRAY, which holds up to four variable-speed fans. Airflow runs front to back on every fan, and a failed fan can be replaced in service. The chassis keeps running through a single fan failure, so no second fan tray is needed for redundancy.

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C9500-48Y4C-A Datasheet

Item	Qty	Amount
C9500-48Y4C-ANew, factory-sealed · 3-year warranty · In stock
C9500-DNA-ARequired with each C9500-48Y4C-A

C9500-48Y4C-A – 48×1/10/25G SFP28 Ports – 4×40/100G QSFP28 Uplinks – Network Advantage

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C9500-48Y4C-A Description

Quick Specs

Product Performance

Key Features

Application Scenarios

Product Comparison

Ordering Checklist

Optional Add-ons

C9500-48Y4C-A Switch Front Panel

C9500-48Y4C-A Switch Rear Panel

Components Delivered in the Shipping Box

Specifications

Quality Certifications

Customer Reviews

Questions & Answers

Can C9500-48Y4C-A run StackWise Virtual?

What does Network Advantage on C9500-48Y4C-A include?

Can two C9500-48Y4C-A switches be paired with StackWise Virtual, and which ports carry the link?

Which routing and high-availability features does Network Advantage add on C9500-48Y4C-A?

Does C9500-48Y4C-A support 1600W AC or DC power supplies?

What surge and hold-up ratings does C9K-PWR-650WACL-R have in C9500-48Y4C-A?

Which SSD options can C9500-48Y4C-A take, and from which release?

What operating temperature and altitude limits apply to C9500-48Y4C-A?

How many security and QoS ACL entries does C9500-48Y4C-A support?

How much memory and packet buffer does C9500-48Y4C-A have?

Which fan trays does C9500-48Y4C-A not support?

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