C8375-E-G2 – 2x10G SFP+ – 4×2.5G mGig UPoE+ – 1x SM + 1x NIM + 1x PIM Slots

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C8375-E-G2 Description

The C8375-E-G2 is the modular member of the Cisco 8300 Series Secure Routers, built for large branch sites where the interface mix is expected to change after install. Its fixed faceplate carries 2 x 10G SFP/SFP+ and 4 x 2.5G multigigabit RJ45 ports with UPoE+ on two of them, and everything beyond that arrives on cards: 1 SM slot, 1 NIM slot and 1 PIM slot for cellular. The default 400W AC internal supply carries no PoE, so powering endpoints means ordering the 760W AC + PoE supply and its 360W budget. Forwarding runs at 38 Gbps with 20 Gbps of IPsec, and both power supply slots and the fan tray stay field-replaceable.

Quick Specs

Parameter

Specification

Product ID

C8375-E-G2

Platform type

Modular platform, 1 RU

WAN ports

2 x 10G SFP/SFP+ and 4 x 2.5G mGig RJ45 with 2x UPoE+

Expansion slots

1 x NIM and 1 x SM

Cellular slot

1 x PIM

Default power supply model

400W AC internal FRU, dual PSU; Cisco publishes no separate supply PID

Power Supply (Upgrade options)

760W AC + PoE, or 500W DC

Default PoE budget

None; the default 400W AC supply carries no PoE

Maximum PoE budget with the 760W AC + PoE supply

360W

Forwarding throughput

38 Gbps at 512 bytes

DRAM

16 GB, upgradeable to 32 GB

Minimum software release

Cisco IOS XE 17.15.3

Product Performance

Forwarding Throughput
IPsec Throughput
SD-WAN Throughput

Key Features

Two Card Slots Instead Of A Fixed Faceplate

An SM slot and a NIM slot let the same chassis take serial, async, DSL, switch or carrier-card modules after deployment, so a branch whose circuit type changes does not need a different router.

The Largest PoE Budget In The Series

The 760W AC + PoE supply delivers 360W, triple what the fixed sibling offers, which is what lets the two UPoE+ ports drive full-power endpoints instead of splitting a much smaller budget.

Both Supplies And The Fan Tray Are Field Replaceable

Power Supply Slot 0, Slot 1 and the fan tray assembly are all field replaceable, so a supply or fan failure is a parts swap in place rather than a chassis return.

Memory Headroom The Fixed Model Does Not Have

DRAM starts at 16 GB and moves to 32 GB, and an M.2 slot takes eUSB or SED storage alongside the 16 GB to 2 TB options, so feature growth over the deployment life is not capped at order time.

NEBS Range For Carrier And Utility Sites

Beyond the 0 to 45 degrees C commercial envelope, Cisco publishes a NEBS range of -5 to 55 degrees C up to 6000 feet, which opens central-office and utility cabinets that the commercial range alone would exclude.

DC Input Without A Converter

A 500W DC supply is listed alongside the AC options and the chassis accepts -40 to 72V at 48V nominal, so a DC-powered site wires the router directly instead of adding a rectifier.

Application Scenarios

Large Branch With Changing Circuits

Deployed where the WAN mix is not final at install, with the SM and NIM slots holding serial, DSL or async cards as the site’s circuits are cut over.

Carrier And Utility Cabinets

Installed in central-office and utility environments that need the NEBS -5 to 55 degrees C range or direct 48V DC input rather than commercial AC power.

Powered Branch Endpoints

Placed where cameras, access points or phones draw UPoE+ from the router, in sites that have ordered the 760W AC + PoE supply and its 360W budget.

Product Comparison

Parameter

C8375-E-G2

C8355-G2

C8235-E-G2

Platform type

Modular platform, 1 RU

Fixed platform, 1 RU

Modular platform, 1 RU

WAN ports

2 x 10G SFP/SFP+ and 4 x 2.5G mGig RJ45 (2x UPoE+)

2 x 10G SFP/SFP+ and 2 x 5G mGig RJ45 (2x UPoE+)

2x 1/10 GE SFP+ and 2x 2.5 GE mGig RJ-45 (2x UPOE+)

Flex ports

Not present on this platform

2 x 5G mGig RJ45 (2x UPoE+) and 2 x 1G RJ45

Not present on this platform

LAN ports

Not present on this platform

2 x 10G SFP/SFP+

Not present on this platform

Expansion slots

1 x NIM and 1 x SM

No NIM or SM bay

1 x NIM only

Default power supply model

400W AC internal FRU

110W AC external adapter

140W AC internal

Power Supply (Upgrade options)

760W AC + PoE, or 500W DC

230W AC + PoE

150W AC for PoE

Default PoE budget

None; the default supply carries no PoE

None; the default supply carries no PoE

None; the default supply carries no PoE

Maximum PoE budget with the PoE supply

360W

120W

120W

Forwarding throughput

38 Gbps

38 Gbps

19 Gbps

SD-WAN throughput

12 Gbps

8.7 Gbps

4 Gbps

Threat protection throughput

7 Gbps

3.9 Gbps

2.4 Gbps

DRAM

16 GB, upgradeable to 32 GB

16 GB, fixed

16 GB

Chassis weight

14.3 lbs

9.25 lbs

8.36 lbs

Minimum software release

Cisco IOS XE 17.15.3

Cisco IOS XE 17.18.1

Cisco IOS XE 17.18.1

  • C8375-E-G2 and C8355-G2 forward at the same 38 Gbps, so the split is not routing capacity. C8375-E-G2 buys expansion and power headroom, 1 SM plus 1 NIM slot and a 360W PoE budget against no module bay and 120W, while C8355-G2 puts 2 x 10G SFP/SFP+ on the LAN side plus four Flex and 1G ports that C8375-E-G2 does not carry at all.
  • The trade runs in both directions on the faceplate. A site needing 10G in both directions gets it natively from C8355-G2, whereas on C8375-E-G2 the same layout has to be bought as a NIM and consumes the slot that a serial or DSL card would otherwise take.
  • Against C8235-E-G2 the boundary is the SM slot and the throughput tier. C8235-E-G2 has 1 NIM and no SM, forwards at 19 Gbps against 38 Gbps, and delivers 4 Gbps of SD-WAN against 12 Gbps; it holds the same 120W PoE ceiling as C8355-G2, so a branch that needs a service module and more than 120W of endpoint power has only C8375-E-G2 in this group.
  • For deciding which SKU to order, settle whether an SM-form-factor module will ever be required, because only C8375-E-G2 has that bay and no carrier card retrofits one; then size forwarding against the circuit to separate the 38 Gbps pair from C8235-E-G2. Cellular is not a differentiator here, since all three carry 1 PIM slot.

Selection Guide

1. When The SM Slot Is The Reason

C8375-E-G2 is the only router in this group with an SM bay, so a design that needs SM-X-1T3/E3, SM-X-64A or the C-SM-NIM-ADPT carrier holding two NIMs starts here; a branch that only ever needs one NIM can take C8235-E-G2 at a lower throughput tier and the same 120W PoE ceiling.

2. Three Hundred Sixty Watts Against One Hundred Twenty

The 760W AC + PoE supply is what separates this router from both alternatives on endpoint power: 360W against the 120W that C8355-G2 and C8235-E-G2 top out at. A site drawing more than 120W across its powered ports has no other option in the 8300 or 8200 line.

3. Where The Fixed Faceplate Wins

C8355-G2 carries 2 x 10G SFP/SFP+ on the LAN side and four more Flex and 1G ports natively; reproducing that on C8375-E-G2 costs the NIM slot and a C-NIM-4X module, so a site with a settled port plan and no module roadmap pays less and keeps more ports with the fixed model.

4. An Earlier Software Floor Than Its Own Sibling

C8375-E-G2 starts at Cisco IOS XE 17.15.3 and Cisco Catalyst SD-WAN Manager 20.15.3, while C8355-G2 needs 17.18.1 and 20.18.1; an estate standardised on a 17.15 train can adopt this router immediately and has to qualify a newer image before the fixed model enters service.

5. NEBS And DC Input Decide Site Type

The NEBS -5 to 55 degrees C range and the 500W DC supply put this router into central-office and utility cabinets; C8355-G2 publishes only a 0 to 40 degrees C sea-level envelope and no DC option, so site power and thermal conditions can settle the choice before any port count is compared.

PoE Power Planning

Planning Item

Value or Check

PoE on the default supply

None; the default 400W AC internal FRU supply carries no PoE budget

PoE budget with the upgrade supply

360W with the 760W AC + PoE power supply

UPoE+ capable ports

2 of the 4 multigigabit RJ45 WAN ports

Device count check

Confirm total endpoint draw across the two UPoE+ ports against the 360W budget

Power supply line item

Confirm the 760W AC + PoE supply is on the order whenever any port must deliver power

Dual supply population

Confirm both Power Supply Slot 0 and Slot 1 are populated if the site requires supply redundancy

Ordering Checklist

Check Item

What to Confirm

Why It Matters

PoE power supply

Confirm the 760W AC + PoE supply is on the order when any endpoint draws power from the router.

The default 400W AC supply has no PoE budget, so the UPoE+ ports stay unpowered until that supply arrives.

Module form factor

Confirm each planned module matches its bay, with SM-form-factor cards in the SM slot and NIM cards in the NIM slot.

The two bays are not interchangeable, and a card ordered for the wrong form factor cannot be installed.

Software image floor

Confirm the image is Cisco IOS XE 17.15.3 or later and the manager is Cisco Catalyst SD-WAN Manager 20.15.3 or later.

Staging on an earlier train leaves the router unsupported even though the hardware is installed.

DC input plan

Confirm whether the site feeds AC 85 to 264 VAC or DC -40 to 72V at 48V nominal, and order the 500W DC supply if the feed is DC.

The supply type is fixed at order time and an AC-only order cannot be wired into a DC plant.

Memory and storage sizing

Confirm whether 16 GB DRAM and 16 GB storage suffice or whether 32 GB DRAM and larger storage are required.

Storage and DRAM options are selected at order time, and undersizing forces a later parts order.

Rack depth

Confirm the rack clears 16.25 in. of chassis depth plus cabling.

This chassis is deeper than the fixed sibling, and a plan sized for 11.49 in. bodies will not close.

Site thermal range

Confirm the site stays inside 0 to 45 degrees C up to 6000 feet, or qualifies for the NEBS -5 to 55 degrees C range.

The commercial and NEBS envelopes differ, and the wrong assumption at survey time can fail thermal validation.

Optional Add-ons

Add-on

Description

C-NIM-WAN-2X

2-port 1/10Gbps SFP/SFP+ NIM with WAN MACsec.

C-NIM-WAN-4S

4-port 1Gbps SFP NIM with WAN MACsec.

C-NIM-4X

4-port 1/10 Gbps SFP/SFP+ switch NIM with LAN/WAN MACsec and optional Layer 3.

C-NIM-8T

8-port 100 Mbps/1 Gbps switch NIM with LAN/WAN MACsec and optional Layer 3.

C-NIM-8M

8-port 100M/1/2.5 Gbps switch NIM with UPOE+, LAN/WAN MACsec and optional Layer 3.

C-SM-16P4M2X

22-port Catalyst Layer 2 switch module with UADP ASIC.

C-SM-NIM-ADPT

Single-wide carrier module holding two NIMs in an SM-X form factor.

NIM-VAB-A

Multi-mode VDSL2/ADSL/2/2+ NIM, Annex A.

NIM-VA-B

Multi-mode VDSL2/ADSL/2/2+ NIM, Annex B.

NIM-VAB-M

Multi-mode VDSL2/ADSL/2/2+ NIM, Annex M.

SM-X-1T3/E3

1-port clear-channel T3/E3 service module.

NIM-1T

1-port serial high-speed WAN interface card.

NIM-2T

2-port serial high-speed WAN interface card.

NIM-4T

4-port serial high-speed WAN interface card.

NIM-16A

16-port asynchronous module.

NIM-24A

24-port asynchronous module.

SM-X-64A

64-port asynchronous module.

P-5GS6-R16SA-GL

5G Sub-6 GHz pluggable, 5G SA Global.

P-LTEA7-NA

CAT7 LTE Advanced pluggable, North America.

P-LTEA7-EAL

CAT7 LTE Advanced pluggable, EMEA, APAC and LATAM.

P-LTEA7-JP

CAT7 LTE Advanced pluggable, Japan.

Front Panel

C8375-E-G2 Front

Label

Description

1

USB 3.0 Type C Storage

2

Management RJ45 Port

3

Console RJ45 / Micro-USB Port

4

4 x 2.5G Multigigabit RJ45 Port

5

2 x 10G SFP/SFP+ Port

6

NIM Slot

7

M.2 Storage Slot (eUSB / SED)

8

SM Slot

9

Label Tray

10

RFID

Rear Panel

C8375-E-G2 Front

Label

Description

1

Power Supply Slot 1

2

Replaceable Fan Tray Assembly

3

PIM Slot

4

Power ON/OFF Switch

5

Power Supply Slot 0

Specifications

Parameter Specification Parameter Specification
Product ID C8375-E-G2 Series Cisco 8300 Series Secure Routers
Platform type Modular platform WAN ports 2 x 10G SFP/SFP+ and 4 x 2.5G mGig RJ45 with 2x UPoE+
Flex ports Not present on this platform LAN Ports Not present on this platform
Expansion Slots 1 x NIM and 1 x SM Cellular Slot 1 x PIM
Management Port 1 x RJ45 out-of-band management Console port 1 x RJ45 and 1 x Micro-USB
Storage interface USB 3.0 Type C M.2 Storage Slot eUSB or SED
Asset tag RFID Fan tray Replaceable fan tray assembly
Power supply slots Power Supply Slot 0 and Power Supply Slot 1, field replaceable Default power supply model 400W AC internal FRU, dual PSU; Cisco publishes no separate supply PID
Power Supply (Upgrade options) 760W AC + PoE, or 500W DC Default PoE budget None; the default 400W AC supply carries no PoE
Maximum PoE budget with the 760W AC + PoE supply 360W Typical Power Consumption 55W with the default supply and no modules
Input voltage AC: 85 to 264 VAC; DC: -40 to 72V, 48V nominal DRAM 16 GB default, upgradeable to 32 GB
Storage 16 GB default, with 32 GB, 600 GB and 2 TB options Forwarding (512B) 38 Gbps
IPsec (512B) 20 Gbps SD-WAN (512B) 12 Gbps
Threat Protection (EMIX) 7 Gbps SD-WAN measurement basis IPsec, QoS, Deep Packet Inspection and Flexible NetFlow enabled
Threat Protection measurement basis 100% DIA-NAT, NGFW, IPS, URLF and AMP enabled IPv4/IPv6 routes 2M
IPsec tunnels 3500 IPv4 ACLs 4000
IPv4 ACEs 20K NAT Sessions 1.5M
VRFs 4000 Dimensions (H x W x D) 1.73 in x 17.5 in x 16.25 in
Rack Units (RU) 1 RU Chassis weight 14.3 lbs with two AC power supplies and the fan tray
Operating temperature 0 to 40 degrees C up to 10,000 feet; 0 to 45 degrees C up to 6000 feet NEBS operating temperature -5 to 55 degrees C up to 6000 feet
Storage temperature -40 to 70 degrees C Relative humidity 5 to 85 percent operating; 5 to 95 percent non-operating and storage
Minimum device OS Cisco IOS XE 17.15.3 Minimum SD-WAN Manager release Cisco Catalyst SD-WAN Manager 20.15.3

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Questions & Answers

  • Which WAN edge deployment fits C8375-E-G2?

    C8375-E-G2 fits high-throughput branch or WAN edge deployments needing modular Catalyst 8300 routing, SD-WAN, IPsec, and threat-protection performance.
  • Which built-in WAN ports does C8375-E-G2 provide?

    C8375-E-G2 provides two 10G SFP/SFP+ WAN ports and four 2.5G multigigabit RJ-45 WAN ports, with UPOE+ on the last two RJ-45 ports.
  • How is C8375-E-G2 different from C8355-G2?

    C8375-E-G2 is the modular G2 platform; it adds SM, NIM, and PIM expansion plus a dual internal power-supply design.
  • Which throughput number matters for C8375-E-G2?

    C8375-E-G2 sizing separates 38 Gbps forwarding, 20 Gbps IPsec, 12 Gbps SD-WAN, and 7 Gbps threat protection because feature mix changes usable performance.
  • What expansion question belongs with C8375-E-G2?

    C8375-E-G2 expansion planning uses the NIM, SM, and PIM slots for added WAN interfaces, switching modules, cellular connectivity, or storage options.
  • Which licensing question appears around C8375-E-G2?

    C8375-E-G2 licensing discussions separate platform forwarding from cryptographic or SD-WAN throughput tiers, plus DNA software subscriptions for routed edge deployments.
  • Can C8375-E-G2 replace older ISR or Catalyst 8300 routers?

    C8375-E-G2 can replace older ISR or earlier Catalyst 8300 edge roles when port speeds, module needs, SD-WAN features, and encrypted throughput match.
  • What ordering detail prevents a C8375-E-G2 mismatch?

    C8375-E-G2 ordering checks power supplies, PoE budget, memory, storage, NIM or SM modules, PIM needs, and IOS XE release support.
  • Which older NIM and SM modules can be reused with C8375-E-G2?

    C8375-E-G2 lists NIM-1T, NIM-2T, NIM-4T, NIM-16A, NIM-24A, SM-X-1T3/E3, and SM-X-64A among its supported modules. Match the exact PID and target software release; having a NIM or SM form factor alone is not proof of compatibility.
  • Does C8375-E-G2 provide 360W of PoE with the standard 400W supply?

    No. The C8375-E-G2 360W PoE budget requires the PWR-CC1-760WAC AC-plus-PoE supply. The standard PWR-CC1-400WAC configuration does not provide that PoE budget, so the power-supply option must be specified in the order.
  • Which C8375-E-G2 throughput figure should I use for a secure branch design?

    C8375-E-G2 lists 20 Gbps IPsec and 12 Gbps SD-WAN at 512-byte packets, plus 7 Gbps threat protection using EMIX. Choose the benchmark matching the enabled services rather than using the separate 38 Gbps forwarding figure for every workload.
  • What is the 32 GB memory upgrade for C8375-E-G2?

    C8375-E-G2 starts with 16 GB DRAM and supports a 32 GB configuration using MEM-C83G2-32GB. The listed 32 GB is the resulting configuration, not a 32 GB addition to the default memory.
  • Which DSL NIMs are listed for C8375-E-G2?

    C8375-E-G2 lists NIM-VAB-A for Annex A, NIM-VA-B for Annex B, and NIM-VAB-M for Annex M. Each is a multimode VDSL2/ADSL-family NIM, so the module annex must match the circuit instead of being selected by slot compatibility alone.
  • Can C8375-E-G2 accommodate more than its built-in single NIM slot?

    C8375-E-G2 lists C-SM-NIM-ADPT, a two-NIM carrier in SM-X form factor, for its SM slot. Using that carrier consumes the SM position, so the expansion plan must account for any competing service-module requirement.
  • Does C8375-E-G2 include cellular backup without an additional module?

    No. C8375-E-G2 has one PIM slot for optional cellular connectivity. P-5GS6-R16SA-GL is the listed 5G choice, with P-LTEA7 variants available for regional CAT7 LTE requirements.
  • Are all four C8375-E-G2 multigigabit ports UPOE+ capable?

    No. C8375-E-G2 has four 2.5G RJ-45 interfaces, but only two are identified as UPOE+ capable. The other built-in interfaces are two 10G-capable SFP/SFP+ ports, and the PoE power option is a separate ordering consideration.
  • Can an IOS XE upgrade change C8375-E-G2 encryption throughput without a license change?

    Yes. On C8375-E-G2 in autonomous mode, upgrading an OS Essentials deployment to IOS XE 17.18.1a or later introduces Day-0 enforcement and a 250 Mbps aggregate crypto limit. Full authorized Advantage operation requires the appropriate boot level and license authorization; HSEC is not applicable to this platform.
  • Which DC supply is listed for C8375-E-G2?

    C8375-E-G2 lists PWR-CC1-500WDC as its 500W DC power option, with a nominal 48V DC input specification. Select it for a compatible DC feed rather than treating the standard AC supply or the AC-plus-PoE option as interchangeable power inputs.

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