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C1121-8P
Cisco ISR 1100 SD-WAN Router, 8x GE LAN, Dual GE WAN, SFP Co...
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C1121-8P is a Cisco 1000 Series Integrated Services Router for branch offices, retail locations, service desks, and small business sites that need wired WAN access, integrated LAN switching, and software-managed security services in one fixed appliance. This model is identified in Cisco's 112x ISR table with two Gigabit Ethernet WAN interfaces and eight Gigabit Ethernet LAN ports, with no integrated DSL, LTE, or Wi-Fi radios. It runs Cisco IOS XE and supports autonomous routing deployments as well as controller-managed Cisco IOS XE SD-WAN beginning with the C112x SD-WAN minimum release stated by Cisco. The platform fits desktop installations and rack-mounted branch closets, giving network teams a compact ISR option for sites that need policy-based routing, VPN services, NAT, QoS, IPv6, and central operations without moving to a larger modular chassis. Its value is strongest where the routing appliance, local Ethernet handoff, and Cisco operational model must remain consistent across many distributed locations.
The C1121-8P hardware profile is useful where a site needs two Ethernet WAN paths, one of them available through the RJ-45/SFP combo WAN position, plus eight local Gigabit Ethernet switch ports for branch equipment. Cisco lists the C112x-8P mechanical profile at 1.65 x 10.80 x 7.85 inches and 3.48 lb, with 19.9W maximum power consumption excluding external power-supply loss. The platform uses 4 GB DRAM and 4 GB flash in the non-X C112x-8P configuration, while Cisco documents 1673 Mbps IPv4 IMIX forwarding, 468 Mbps multi-tunnel IPsec IMIX throughput in autonomous mode, and 1889 Mbps SD-WAN IPsec throughput with 1400-byte packets in controller mode. Optional inline PoE/PoE+ requires the Cisco PoE power option rather than being assumed in the base chassis, and the power plan should match the exact quoted configuration. Scale planning can reference Cisco's published route, NAT, VRF, ACL, and tunnel figures instead of extrapolating from unrelated ISR models.
For procurement and content accuracy, C1121-8P should be positioned as a wired branch, SD-WAN, and VPN router, not as a switch, firewall-only appliance, wireless access point, LTE router, module, or cable. Cisco's ordering guide shows the model with a CAT4 LTE USB dongle option, but the manufacturer SKU table marks integrated LTE and 802.11ac as not present for this SKU, so content should not describe built-in cellular or Wi-Fi service. Buyers usually evaluate this router for dual-WAN branch edge routing, small-site segmentation, secure tunnel aggregation, and centrally managed IOS XE operations. For licensing, advanced security, MPLS/application experience, SD-WAN subscriptions, and higher IPsec entitlement, confirm Cisco licensing documentation for the exact configuration being quoted before placing the order. This also keeps accessory decisions, such as rack mounting, SFP selection, PoE power, and LTE dongle use, tied to documented Cisco options.
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C1121-8P supports branch locations that require wired primary and secondary WAN paths without a larger modular chassis. The two Gigabit Ethernet WAN interfaces, including the RJ-45/SFP combo position, give network teams a practical design for carrier handoff diversity, Ethernet access, or fiber uplink planning. Eight local Gigabit Ethernet LAN ports support branch devices at the edge, while Cisco IOS XE routing, NAT, QoS, IPv6, and high-availability features help standardize operations across distributed offices. The SKU also helps teams keep router content separate from switch-only catalog entries.
C1121-8P fits sites that need encrypted tunnel aggregation, centralized policy control, and familiar Cisco branch-router operations. Cisco documents SD-WAN controller mode for C112x platforms, along with C112x-8P SD-WAN IPsec performance and overlay tunnel scale, while autonomous mode supports IPsec, DMVPN, FlexVPN, GETVPN, NAT, ACLs, and QoS through the correct licenses. This use case suits managed branch networks where software entitlement, throughput targets, and security policy must be validated before deployment. It also keeps security positioning grounded in documented Cisco licenses rather than unsourced feature assumptions.
C1121-8P works well for retail counters, service locations, small professional offices, and remote operations rooms where space, power, and port count matter. The fixed 1U-class chassis, 3.48 lb weight, desktop or rack-mount placement, and external AC power profile simplify physical planning. Eight Gigabit Ethernet LAN ports support point-of-sale devices, printers, workstations, or local handoff equipment, while the optional PoE configuration and CAT4 LTE USB dongle option support quote-specific expansion when Cisco documentation and site design call for them. Procurement details remain configuration-specific.
Performance stayed steady during branch VPN rollout, and IOS XE management matched our existing Cisco process.
The dual WAN layout made our remote office migration straightforward, especially with the SFP option.
Reliable routing and predictable policy handling helped us standardize smaller sites without changing our operations playbook.
Deployment was clean, and the eight LAN ports reduced extra edge hardware at the branch.
Good fit for managed branch routing; licensing details needed careful review before purchase.
Stable IPsec performance and familiar CLI made support handoff easier for our network team.
Worked well for a compact site, though PoE planning required attention during quoting.
C1121-8P is a Cisco 1000 Series Integrated Services Router for wired branch and small-site routing. Cisco's 112x ISR table identifies it with two Gigabit Ethernet WAN interfaces, eight Gigabit Ethernet LAN ports, Cisco IOS XE software, and controller-managed IOS XE SD-WAN support on the documented C112x minimum release.
C1121-8P should be classified as a router, not as a standalone Ethernet switch. It includes integrated Gigabit Ethernet LAN switch ports, but Cisco's support page places the Cisco 1000 Series Integrated Services Routers under Branch Routers, and the platform is built for routing, VPN, SD-WAN, security, and WAN edge services.
Cisco lists C1121-8P with two WAN GE interfaces and eight LAN GE interfaces. The hardware guide shows the C1121(X)-8P I/O view with an RJ-45 WAN port, an SFP WAN position, an Ethernet switch section, a micro-USB console, USB 3.0, grounding, and the power connector.
No integrated Wi-Fi or LTE should be claimed for C1121-8P. Cisco's 112x ISR SKU table marks DSL, 5G, LTE, and 802.11ac as No for the C1121(X)-8P row. The ordering guide separately references a CAT4 LTE dongle option, which is not the same as built-in cellular.
Yes, Cisco documents C112x platforms for controller-managed Cisco IOS XE SD-WAN and lists 17.2.1 as the minimum supported XE SD-WAN release for the C112x-8P models. SD-WAN subscriptions, management mode, and feature entitlement should be matched to the exact software and license package being quoted for deployment.
For the C112x(X)-8P class, Cisco documents 1673 Mbps IPv4 forwarding throughput using IMIX in autonomous, non-SD-WAN mode. In controller mode, Cisco also lists 1889 Mbps SD-WAN IPsec throughput with 1400-byte packets and 465 Mbps SD-WAN IPsec throughput with IMIX traffic. Use those numbers for sizing discussions, not commercial guarantees.
Cisco's C112x performance tables list 468 Mbps IPsec throughput with multi-tunnel IMIX traffic in autonomous mode and 100 IPsec IPv4 tunnels. The SD-WAN controller-mode table lists 1889 Mbps IPsec throughput with 1400-byte packets, 465 Mbps IMIX throughput, and 200 SD-WAN overlay tunnels. These figures should be matched to licensed operating mode.
Cisco's C112x scalability table lists the non-X C112x-8P configuration with 4 GB DRAM and 4 GB flash. The ordering guide notes that the C1121X-8P variant uses 8 GB memory and flash for SD-WAN Advanced Security support, so the X suffix should not be ignored.
C1121-8P runs Cisco IOS XE. Cisco's ISR 1000 documentation describes deployment in traditional IOS XE mode or controller-managed IOS XE SD-WAN mode, with Cisco vManage used for controller deployments and Cisco DNA Center listed for autonomous-management workflows in the platform documentation. That distinction matters when planning templates and support processes.
Cisco's ordering guide ties Security licensing for ISR 1100 8P platforms to Zone-Based Firewall, IPsec VPN, DMVPN, FlexVPN, and GETVPN. Base content should not imply every advanced security feature is active by default; security entitlement depends on the license bundle and image selected. Quote security licensing explicitly when these functions are required.
C1121-8P supports inline PoE and PoE+ through the documented optional PoE power configuration. Cisco lists ISR-1100-POE4 for ISR 1100 8P systems, supporting four PoE ports or two PoE+ ports with the 150W power supply. Do not assume the base router includes that option. Confirm the power option before documenting PoE availability.
Cisco positions the C1121 family for desktop installation and provides rack-mount hardware options for the 112x and 116x platforms. The C112x-8P chassis height is 1.65 inches, so rack planning should confirm the appropriate Cisco rack-mount kit and site-specific mounting requirements before quoting accessories. Avoid assuming the kit is present with every base unit.
Cisco lists the C112x(X)-8P mechanical profile as 1.65 x 10.80 x 7.85 inches and 3.48 lb. Those values apply to the C112x-8P mechanical table, while LTEP and wireless LTEPW variants have different dimensions and weights, so variant suffixes matter during content creation. Use the exact model row when comparing enclosure data.
Cisco lists 19.9W maximum power consumption for the C112x(X)-8P model, excluding external power-supply loss. The external power supply uses universal 100 to 240 VAC input, 12 VDC output, and 66W maximum output power; optional PoE and PoE+ require the documented 150W power supply.
C1121-8P is managed through Cisco IOS XE operating workflows. Cisco documents traditional IOS XE operation and controller-managed IOS XE SD-WAN, with Cisco vManage for controller deployments and Cisco DNA Center for autonomous mode. CLI, local management, SNMP, and controller-based operations should match the customer's chosen image and license model.
Cisco's scalability data lists 260K IPv6 routes for the C112x-8P configuration, so IPv6 support is documented. The ordering guide places MPLS under the Application Experience license bundle for ISR 1100 platforms, so MPLS should be treated as license-dependent instead of a default base claim.
The core WAN design uses two Gigabit Ethernet WAN paths, including the SFP combo WAN position shown for the platform. Cisco's ordering guide also references a CAT4 LTE dongle option for C1121-8P, but the model table does not identify integrated LTE hardware for this exact SKU.
C1121-8P is commonly evaluated for branch offices, retail locations, service counters, and small business networks that require wired WAN routing, local Ethernet ports, VPN services, and centralized Cisco operations. It should be selected against documented throughput, licensing, power, and port requirements rather than described as a universal fit.
Use the exact SKU C1121-8P when requesting pricing, and include the desired condition, licenses, rack-mount accessories, PoE power option, and any SFP or LTE dongle requirement. ORM Systems should quote the specific configuration instead of substituting C1121X, LTEP, LTEPW, 4P, or unrelated ISR variants. This protects the request from variant drift.
A purchase request should include the exact SKU, router quantity, preferred condition, software or subscription requirements, security or application licenses, rack-mount needs, PoE requirements, SFP transceivers, and the CAT4 LTE dongle option if needed. These details reduce mismatches between the base chassis and deployment design.
C1121-8P suits refresh projects where the site design calls for wired dual-WAN routing, eight local Gigabit Ethernet ports, Cisco IOS XE operations, VPN capability, and optional SD-WAN management. The buying decision should still verify throughput targets, license entitlement, power accessories, and the exact lifecycle position for the quoted unit.
C1121-8P may be quoted in the condition requested by the buyer, but content should not invent availability or commercial terms. Specify new or refurbished preference, required licenses, serial-policy expectations, accessories, and any service entitlement needs so the quoted configuration aligns with the router deployment plan.
Common accessory discussions include the 112x rack-mount kit, optional PoE power configuration, supported SFP transceivers for the combo WAN port, security or application licenses, SD-WAN subscriptions, and the CAT4 LTE USB dongle option. Only accessories supported by Cisco documentation should be included in product content.
Preserve the full SKU and suffix exactly. C1121-8P, C1121X-8P, C1121-8PLTEP, and C1121-8PLTEPW do not describe the same hardware profile. Memory, LTE, Wi-Fi, and pluggable technology details change by suffix, so variant assumptions create inaccurate specifications and poor procurement matches. Use manufacturer documentation before carrying one variant's attributes into another.
Ask whether the site requires IP Base only, Application Experience, Security, SD-WAN subscription, VPERF, or HSEC licensing. Cisco's ordering guide separates routing, MPLS/application features, security VPN features, and higher IPsec entitlement, so the correct license package should be quoted with the exact router use case.
Verify WAN design, LAN port count, PoE expectation, SFP need, SD-WAN or autonomous mode, software release, security license, throughput target, power requirements, rack mounting, and any LTE dongle requirement. These checks align the exact C1121-8P router with the site's routing and procurement requirements. Document each decision in the quote request.
C1121-8P is the eight-LAN-port member of the C1121 wired branch-router group, while C1121-4P is the four-LAN-port model. Cisco's performance table also lists higher C112x-8P throughput than C112x-4P, including 1673 Mbps IPv4 IMIX forwarding versus 1372 Mbps for the 4P class. That difference affects both port planning and sizing conversations.
Cisco groups C1121(X)-8P in the port table, but the X suffix matters for memory. The non-X C112x-8P scalability row lists 4 GB DRAM and 4 GB flash, while the C112xX-8P row lists 8 GB DRAM and 8 GB flash for the X variant.
C1121-8P is the wired eight-LAN-port model without integrated LTE in Cisco's 112x SKU table. C1121-8PLTEP adds pluggable LTE technology while keeping eight LAN GE ports. Do not transfer LTEP cellular claims to C1121-8P unless the content clearly refers to the separate dongle option. That distinction matters when buyers expect cellular failover.
Both are Cisco ISR 1100 eight-port branch-router models, but they appear in different model families and should not be treated as interchangeable. Cisco's ordering guide lists C1121-8P with a CAT4 LTE dongle option, while exact C1111-8P details should be validated from its own SKU evidence.
Cisco's support page for Cisco 1000 Series Integrated Services Routers lists the product type as Branch Routers and the status as Available Order. Because lifecycle notices can be SKU-specific, content should avoid unsupported lifecycle claims and verify any end-of-sale or support dates from current Cisco notices.
Cisco's ISR 1000 safety and compliance table lists inline PoE support to 802.3af PoE and 802.3at PoE+, safety standards including UL and IEC 60950-1 and 62368-1, EMC emissions including FCC Part 15 and EN55022, and EMC immunity standards including EN55024 and EN300-386. Use the compliance table instead of reseller summaries.
Cisco's C112x autonomous-mode scalability table lists the non-X C112x-8P with 4K ACLs, 10K IPv4 ACEs, 280K IPv4 routes, 260K IPv6 routes, 100K NAT sessions, and 1K VRFs. These are platform scalability figures and should not be confused with service guarantees. Use these figures only with the named platform.
Avoid claiming built-in Wi-Fi, built-in LTE, DSL, included PoE hardware, invented compatibility, sibling products, stock, warranty, shipping, lead time, or price values. Content should rely on exact Cisco evidence for the SKU and describe license-dependent features as license-dependent rather than automatic. The exact Cisco row should drive every field.
Use Cisco manufacturer documentation first, especially the Cisco 1000 Series ISR data sheet, ordering guide, support page, and hardware installation guide. If manufacturer evidence does not answer a field, approved reseller sources may help, but exact-SKU Cisco evidence should remain the primary source hierarchy. This hierarchy prevents lower-quality product-title drift.
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