C9400-SUP-1XL-Y – 2x 25G Uplinks – 240/120/80 Gbps Per Slot – Catalyst 9400 Supervisor Engine

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C9400-SUP-1XL-Y Description

The C9400-SUP-1XL-Y is the Cisco Catalyst 9400 Series Supervisor 1XL with 25G Module, the engine that adds a 25 Gigabit Ethernet uplink option to the previous supervisor generation for core and aggregation roles. Cisco positions 25G here as the popular alternative to 10G in the core, and the module offers up to 2 non-blocking 25GE uplinks alongside the up to 2 non-blocking 40GE QSFP and up to 8 non-blocking 10GE SFP+ uplinks it shares with the rest of that generation. Built on the Cisco Unified Access Data Plane 2.0 ASIC with up to 1.44 Tbps centralized wired capacity and a 900 Mpps IPv4 forwarding rate, it delivers 240 Gbps per line-card slot in a C9404R, 120 Gbps in a C9407R and 80 Gbps in a C9410R, and its hardware supports MPLS, software-defined access control and border capabilities such as a host-tracking database, cross-domain connectivity and VRF-aware LISP, plus the Access, Core, SD-Access and NAT flexible ASIC templates. Two limitations set it apart from its siblings and belong in any evaluation: MACsec is currently not supported in hardware on this engine, and LRM optics are currently not supported either. It occupies one dedicated supervisor slot, pairs through C9400-SUP-1XL-Y/2 for 1+1 redundancy with NSF/SSO and sub-200 msec ISSU, supports nine line cards, and runs from Cisco IOS XE 16.9.1.

Quick Specs

Parameter

Specification

Product ID

C9400-SUP-1XL-Y

ASIC

Cisco Unified Access Data Plane 2.0

Bandwidth per line-card slot

240 Gbps on C9404R, 120 Gbps on C9407R and 80 Gbps on C9410R

Centralized wired capacity

Up to 1.44 Tbps, with 900 Mpps IPv4 and 782.6 Mpps IPv6 forwarding at 95 bytes

Uplinks

Up to 2 non-blocking 25GE, up to 2 non-blocking 40GE QSFP and up to 8 non-blocking 10GE SFP+

Hardware limitations

MACsec is currently not supported in hardware, and LRM optics are currently not supported

Supported line cards

Nine cards; C9400-LC-48HX, C9400-LC-48XS, C9400-LC-24XY, C9400-LC-12QC and C9400-LC-48TX are not supported

Table scale

Up to 64,000 MAC addresses, 144,000 IPv4 routes and 56,000 IPv6 routes

Memory and buffer

16 GB DRAM, 10 GB flash, up to 960 GB SSD, 96 MB packet buffer

Minimum software release

Cisco IOS XE 16.9.1

Application Scenarios

Twenty-Five Gigabit Core Uplinks

Installed where a campus core chassis needs 25G uplinks toward the distribution or data center layer without moving the whole platform to the current supervisor generation.

Compact Chassis Core Roles

Deployed in a C9404R where the 240 Gbps per line-card slot this engine provides matches what the current generation access engine delivers in the same chassis.

Segmented Routing Boundaries

Racked where the chassis terminates MPLS or acts as a software-defined access border using the host-tracking database, cross-domain connectivity and VRF-aware LISP the hardware supports.

Product Comparison

Parameter

C9400-SUP-1XL-Y

C9400-SUP-1XL

C9400X-SUP-2

ASIC

Cisco UADP 2.0

Cisco UADP 2.0

Cisco UADP 3.0sec

Bandwidth per line-card slot

240 Gbps on C9404R, 120 Gbps on C9407R, 80 Gbps on C9410R

240 Gbps on C9404R, 120 Gbps on C9407R, 80 Gbps on C9410R

240 Gbps on all three chassis

Highest uplink speed

25 GE

40 GE

100 GE

Hardware MACsec

Not supported

Supported

Supported

LRM optics

Not supported

Not listed as restricted

Not listed as restricted

Centralized wired capacity

Up to 1.44 Tbps

Up to 1.44 Tbps

Up to 9.6 Tbps

IPv4 routes

Up to 144,000

Up to 144,000

Up to 256,000

Flash and packet buffer

10 GB flash, 96 MB buffer

10 GB flash, 96 MB buffer

20 GB flash, 108 MB buffer

Supported line cards

9

9

14

Minimum software release

Cisco IOS XE 16.9.1

Cisco IOS XE 16.6.2 on C9407R and C9410R

Cisco IOS XE 17.7.1

Rated MTBF

237,670 hours

253,010 hours

304,308 hours

  • C9400-SUP-1XL-Y buys a 25G uplink option and pays for it twice over against C9400-SUP-1XL: hardware MACsec disappears and LRM optics stop working, while capacity, slot rate, table scale, flash, buffer and line card support stay identical, so the 25G uplink has to be worth losing link encryption in hardware.
  • Reliability moves the same direction as the feature loss. Rated MTBF falls to 237,670 hours here against 253,010 on C9400-SUP-1XL and 304,308 on C9400X-SUP-2, making this the lowest-rated engine of the three in the comparison.
  • Against C9400X-SUP-2 the gap is generational and one-sided: 1.44 Tbps against 9.6 Tbps capacity, 144,000 against 256,000 IPv4 routes, 9 against 14 supported line cards, and a chassis-dependent slot rate against a flat 240 Gbps, with hardware MACsec restored on the newer engine.
  • For deciding which SKU to order, treat hardware MACsec as the first gate because it eliminates this engine outright where link encryption is mandatory, then ask whether 25G uplinks are genuinely required, since C9400-SUP-1XL matches every other figure and C9400X-SUP-2 exceeds them all at 100G.

Selection Guide

1. Twenty-Five Gigabit Uplinks Cost Hardware MACsec

This engine is the only Catalyst 9400 supervisor with a 25GE uplink option in its generation, but MACsec is currently not supported in hardware on it while C9400-SUP-1XL retains that capability at otherwise identical figures; a core that must encrypt links cannot take the 25G option at this generation.

2. LRM Optics Are Off The Table

LRM optics are currently not supported on this engine, so an installed base that runs long-reach multimode links over legacy fiber has to re-plan those spans or stay on C9400-SUP-1XL; the restriction applies to the engine rather than to any particular line card.

3. The Compact Chassis Narrows The Generational Gap

In a C9404R this engine delivers the same 240 Gbps per line-card slot that C9400X-SUP-2 provides, so the choice there rests on table scale, line card entitlement and MACsec rather than slot throughput; in a C9410R it drops to 80 Gbps and the newer engine wins on rate alone.

4. Nine Line Cards Cap The Chassis Roadmap

C9400-LC-48HX, C9400-LC-48XS, C9400-LC-24XY, C9400-LC-12QC and C9400-LC-48TX are unavailable on this engine, so a chassis that will later need 25G or 100G line cards is buying a supervisor it must replace rather than supplement.

5. Templates Still Follow The Flexible ASIC Model

Access, Core, SD-Access and NAT flexible ASIC templates apply to this engine, which the current generation replaces with Custom ASIC templates; an estate standardised on those four template profiles keeps its operating model here and has to rework it on a move to C9400X-SUP-2 or C9400X-SUP-2XL.

Ordering Checklist

Check Item

What to Confirm

Why It Matters

Link encryption requirement

Confirm whether any link on this chassis must run MACsec in hardware.

MACsec is currently not supported in hardware on this engine, and no software setting restores it.

Optic type on existing spans

Confirm no planned uplink relies on LRM optics.

LRM optics are currently not supported on this engine, so an existing long-reach multimode span will not come up.

Chassis software floor

Confirm the target C9404R, C9407R or C9410R can run Cisco IOS XE 16.9.1 or later.

The engine has no supported operation below that release on any of the three chassis.

Free supervisor slot

Confirm a dedicated supervisor slot is unused: slots 2 or 3 on C9404R, 3 or 4 on C9407R, 5 or 6 on C9410R.

Line cards are not supported in supervisor slots and supervisor engines cannot occupy line-card slots.

Redundant supervisor PID

Confirm the second engine is ordered as C9400-SUP-1XL-Y/2 when a redundant pair is planned.

Cisco lists a distinct redundant PID, and ordering the base PID twice does not match the documented configuration.

Line card list against the nine

Confirm every planned line card appears in the nine this engine supports.

Five newer cards will not seat on this engine, and discovering that after delivery means replacing the supervisor.

Uplink port combination

Confirm which uplink combination the design uses, since a single supervisor runs 2x 25GE on ports 1 and 5, or 4x 10GE plus 1x 25GE, or 1x 25GE plus 1x 40GE, among other fixed combinations.

Not all uplink ports are simultaneously active, so a link plan counting every port will come up short.

SSD requirement

Confirm whether C9400-SSD-240GB, C9400-SSD-480GB or C9400-SSD-960GB is needed for application hosting.

The SSD is a separate order line and cannot be added from the engine PID.

Specifications

Parameter Specification Parameter Specification
Product ID C9400-SUP-1XL-Y Cisco ordering description Cisco Catalyst 9400 Series Supervisor 1XL with 25G Module, spare part number C9400-SUP-1XL-Y=, redundant supervisor PID C9400-SUP-1XL-Y/2
ASIC Cisco Unified Access Data Plane 2.0 Processor and storage Intel 2.4-GHz x86 with up to 960 GB SATA SSD local storage for container-based application hosting
Bandwidth per line-card slot 240 Gbps on C9404R, 120 Gbps on C9407R and 80 Gbps on C9410R Centralized wired capacity Up to 1.44 Tbps
Forwarding rate 900 Mpps for IPv4 and 782.6 Mpps for IPv6 at 95 bytes Uplink ports Up to 2 non-blocking 25 Gigabit Ethernet, up to 2 non-blocking 40 Gigabit Ethernet QSFP and up to 8 non-blocking 10 Gigabit Ethernet SFP+
Single-supervisor uplink combinations 2x 25GE active on ports 1 and 5, 4x 10GE plus 1x 25GE, 1x 25GE plus 1x 40GE, 8x 10GE, 2x 40GE, or 4x 10GE plus 1x 40GE Hardware limitations MACsec is currently not supported in hardware on this engine, and LRM optics are currently not supported
Advanced services MPLS, software-defined access control and border capabilities including a host-tracking database, cross-domain connectivity and VRF-aware LISP, and flexible ASIC templates Flexible ASIC templates Access for MAC addressing and security, Core for unicast and multicast routing, SD-Access for fabric deployment, and NAT for Layer 3 and NAT in collapsed core WAN deployments
Supported line cards C9400-LC-48U, C9400-LC-48T, C9400-LC-48UX, C9400-LC-24XS, C9400-LC-48P, C9400-LC-24S, C9400-LC-48S, C9400-LC-48H and C9400-LC-48HN Unsupported line cards C9400-LC-48HX, C9400-LC-48XS, C9400-LC-24XY, C9400-LC-12QC and C9400-LC-48TX
MAC addresses Up to 64,000, depending on the SDM template IPv4 and IPv6 routes Up to 144,000 IPv4 and up to 56,000 IPv6
Multicast and snooping Up to 32,000 multicast routes and 16,000/8,000 IGMP and MLD snooping entries QoS and ACL entries Up to 18,000 QoS hardware entries and 18,000 security ACL hardware entries
DRAM and flash 16 GB DRAM and 10 GB flash Packet buffer 96 MB
VLAN and interface scale 4096 VLAN IDs and 1,000 switched virtual interfaces Jumbo frames 9216 bytes
High availability 1+1 supervisor redundancy with NSF/SSO for continuous forwarding during switchover and ISSU under 200 msec on dual engines Supervisor slot positions Slots 2 or 3 on C9404R, slots 3 or 4 on C9407R and slots 5 or 6 on C9410R, with line cards not supported in those slots
Compatible chassis C9404R, C9407R and C9410R, providing 2, 5 and 8 line-card slots respectively Minimum software release Cisco IOS XE 16.9.1 on all three chassis
Rated MTBF 237,670 hours Dimensions (H x W x D) 1.7 x 15.0 x 13.41 in. (4.32 x 38.1 x 34.06 cm) to the faceplate and 1.7 x 15.0 x 15.7 in. (4.32 x 38.1 x 39.88 cm) to the ejector
Weight and rack units 10 lb (4.5 kg), 1 RU Operating temperature -5 to +45 degrees C up to 6,000 feet and -5 to +40 degrees C up to 10,000 feet
Storage temperature -40 to 70 degrees C Relative humidity 10 to 95 percent, noncondensing
Operating altitude -60 to 3,000 m SSD options C9400-SSD-240GB, C9400-SSD-480GB and C9400-SSD-960GB M2 SATA memory
Management interfaces Bluetooth dongle support as a wireless management interface and an embedded WebUI in the default image with no additional license Optics support reference Supported optical modules and their minimum software releases are published in the Cisco transceiver module device support tables rather than in the supervisor engine data sheet

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Questions & Answers

  • What does C9400-SUP-1XL-Y add to Catalyst 9400?

    C9400-SUP-1XL-Y adds a Supervisor 1XL option with 25G uplink capability for Catalyst 9400 core and aggregation designs.
  • When does C9400-SUP-1XL-Y fit over C9400-SUP-1XL?

    C9400-SUP-1XL-Y fits when the campus design needs 25G uplinks while keeping the Supervisor 1XL generation and Catalyst 9400 chassis.
  • How much per-slot bandwidth does C9400-SUP-1XL-Y provide?

    C9400-SUP-1XL-Y provides 240 Gbps per slot on C9404R, 120 Gbps per slot on C9407R, and 80 Gbps per slot on C9410R.
  • Which uplink speeds matter on C9400-SUP-1XL-Y?

    C9400-SUP-1XL-Y planning covers up to 2 non-blocking 25G uplinks plus 10G SFP+ and 40G QSFP uplink options from the Supervisor 1 family.
  • What software baseline matters for C9400-SUP-1XL-Y?

    C9400-SUP-1XL-Y requires Cisco IOS XE 16.9.1 or later on C9404R, C9407R, and C9410R chassis, including redundant-supervisor deployments.
  • What security limitation matters for C9400-SUP-1XL-Y?

    C9400-SUP-1XL-Y buyers need to note that Cisco lists hardware MACsec support as unavailable on this supervisor engine, affecting encrypted-link planning.
  • What migration question fits C9400-SUP-1XL-Y?

    C9400-SUP-1XL-Y fits migrations from 10G aggregation toward 25G uplinks without moving to C9400X SUP-2 hardware or 100G uplink design.
  • What optics planning matters for C9400-SUP-1XL-Y?

    C9400-SUP-1XL-Y optics planning checks 25G SFP28 choices, 10G SFP+ fallback, 40G QSFP needs, link distance, peer-port support, and spare optics.

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