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PA-E3
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- Model:Cisco 7200 Series 1 Port E3 Serial Port Adapter with E3 DSU
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PA-E3 Overview
PA-E3 is a high-performance Ethernet module designed for modern data centers and enterprise networks. It supports speeds up to 10Gbps and incorporates an SFP+ connector, ensuring reliable high-speed connectivity to routers, switches, and servers. Built on a PCIe form factor for straightforward installation, PA-E3 accommodates protocols such as TCP/IP and iSCSI, making it a practical solution for upgrading network interfaces and expanding data center capacity.
PA-E3 delivers robust performance with features like auto-negotiation, jumbo frames, and quality of service (QoS) support to optimize network traffic. Designed to operate within a temperature range of 0 to 70°C and stored between -40 to 85°C, this module is ideal for demanding environments where both efficiency and durability are essential.
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Explore more options from Network Modules And Cards or explore other Cisco products.
PA-E3 Specifications
| Product Type | Network Module / Network Card |
| Module Type | Ethernet |
| Data Rate | 10G |
| Connector Type | SFP+ |
| Supported Protocols | TCP/IP / iSCSI |
| Form Factor | PCIe |
| Operating Temperature | 0 to 70°C |
| Storage Temperature | -40 to 85°C |
| Input Voltage | 3.3V |
| Compatibility | Routers / Switches / Servers |
| Max Speed | 10Gbps |
| Supported Features | Auto-negotiation / Jumbo Frames / QoS |
| Power Consumption | 15W |
| Interface Ports | Ethernet |
| Expansion Slots | SFP+ |
| Product Name | PA-E3 High Performance Ethernet Module |
| Height | 1.5 inches |
| Width | 3.5 inches |
| Depth | 4.0 inches |
| Weight | 0.8 lbs |
PA-E3 Use Case
Data Center-to-Data Center Replication on Carrier-Grade E3 Circuits
A multinational enterprise leverages the Cisco 7200 Series 1 Port E3 Serial Port Adapter with integrated E3 DSU to provision a dedicated 34.368 Mbps E3 circuit between primary and disaster-recovery data centers. The carrier-grade link delivers predictable throughput, low jitter, and SLA-backed performance for accelerated data replication and seamless business continuity.
Low-Latency Financial Trading Connectivity over E3 Links
A global financial trading firm deploys the Cisco 7200 Series router with PA-E3 Serial Port Adapter and built-in E3 DSU to connect its trading platform directly to the stock exchange via a high-bandwidth 34 Mbps E3 line. This setup ensures sub-10 ms latency, minimal packet loss, and strict carrier SLAs, optimizing transaction speeds and securing a competitive edge.
Rural Branch Integration into MPLS Core with E3 DSU
A telecommunications provider installs the Cisco 7200 Series with 1 Port E3 Serial Port Adapter and E3 DSU at remote branch offices to integrate them into its MPLS backbone over E3 circuits. The solution delivers scalable 34 Mbps connectivity, rapid provisioning via integrated DSU, reduced operational costs, and high service reliability for end customers.
Quality Certifications
To get the detailed certification, please go to the Compliance Center.
Product Comparison Table
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| Compatibility | Routers / Switches / Servers | Routers, Switches, Servers | Cisco, Juniper, Arista, Dell, HP | Cisco / Juniper / Arista / Dell / HP | Cisco, Juniper |
| Connector Type | SFP+ | RJ-45 | RJ-45 | RJ-45 | LC Duplex |
| Data Rate | 10G | 10Gbps | 10Gbps | 1Gbps | 155.52 Mbps |
| Depth | 4.0 inches | N/A | N/A | N/A | 0.8 inches |
| Expansion Slots | SFP+ | N/A | N/A | N/A | N/A |
| Form Factor | PCIe | PCIe | PCIe | PCIe | Modular |
| Height | 1.5 inches | N/A | N/A | N/A | 1.2 inches |
| Input Voltage | 3.3V | 3.3V | 3.3V | 3.3V | 3.3V |
| Interface Ports | Ethernet | Ethernet | Ethernet | Ethernet | LC Duplex |
| Max Speed | 10Gbps | 10Gbps | 10Gbps | 1Gbps | OC-3 (155.52 Mbps) |
| Module Type | Ethernet | WAN Module | Ethernet | Ethernet | OC-3 Optical Module |
| Operating Temperature | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C | 0 to 70°C |
| Power Consumption | 15W | N/A | N/A | N/A | 15W |
| Product Name | PA-E3 High Performance Ethernet Module | PA-8E-IPP | PA-2H-IPP | PA-MC-2E1/120 | PA-A6-OC3SMI Optical Carrier Module |
| Product Type | Network Module / Network Card | Network Module / Network Card | Network Module / Network Card | Network Module / Network Card | WAN Module |
| Storage Temperature | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C | -40 to 85°C |
| Supported Features | Auto-negotiation / Jumbo Frames / QoS | Auto-negotiation, Jumbo Frames, QoS | Auto-negotiation, Wake-on-LAN, Jumbo Frames, QoS | Auto-negotiation / Wake-on-LAN / Jumbo Frames / QoS | Auto-negotiation, QoS |
| Supported Protocols | TCP/IP / iSCSI | TCP/IP | TCP/IP | TCP/IP | SONET/SDH |
| Weight | 0.8 lbs | N/A | N/A | N/A | 0.5 lbs |
| Width | 3.5 inches | N/A | N/A | N/A | 3.4 inches |
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Questions & Answers
Q
What is the Cisco PA-E3 (Model: Cisco 7200 Series 1 Port E3 Serial Port Adapter)?
A
The Cisco PA-E3 is a 1-port E3 Serial Port Adapter with integrated DSU/CSU designed for the Cisco 7200 Series routers to provide reliable 34.368 Mbps WAN connectivity.
Q
Which Cisco 7200 Series routers support the PA-E3 E3 Serial Port Adapter?
A
The PA-E3 module is supported in Cisco 7200 VXR and 7200 VXR-Engines that have a Packet-Switching Engine (PSE) slot and IOS releases 12.2(25)SB or later.
Q
What E3 data rates and protocols does the PA-E3 adapter support?
A
The PA-E3 supports E3 (34.368 Mbps) unframed serial data and common protocols including HDLC, PPP, Frame Relay, and Cisco encapsulation over an integrated DSU.
Q
How do I install the PA-E3 module into a Cisco 7200 Series chassis?
A
Power down the router, insert the PA-E3 into an available PSE slot until it latches, reconnect power, and verify module presence with the show diag command.
Q
Which Cisco IOS software releases are compatible with the PA-E3 Serial Port Adapter?
A
The PA-E3 is compatible with Cisco IOS 12.2(25)SB and later feature sets supporting Enterprise/IP Base, Advanced IP Services, and Advanced Enterprise Services.
Q
What type of cabling is required to connect the PA-E3 to a carrier network?
A
Use a male-to-male V.35 or G.703 coaxial cable with appropriate shielding and surge protection to connect the PA-E3’s RJ-48C DSU port to the service provider’s network interface.
Q
How can I configure an E3 interface on the PA-E3 module?
A
Enter interface Serial0/x, set encapsulation (for example “encapsulation hdlc”), and assign IP using “ip address A.B.C.D E.F.G.H” followed by “no shutdown.”
Q
What is the maximum distance supported by the PA-E3 DSU over the local carrier loop?
A
The built-in DSU/CSU supports up to 4 km of E3 local loop over G.703 coaxial cable, subject to carrier specifications and line quality.
Q
Does the Cisco PA-E3 include a built-in DSU/CSU or is an external unit required?
A
The PA-E3 features an integrated DSU/CSU, eliminating the need for an external data service unit when connecting to E3 circuits.
Q
How do I verify E3 link status and performance on the PA-E3 interface?
A
Use show interfaces Serial0/x to view link status, input/output statistics, and CRC error counts; for in-depth diagnostics run show controller Serial0/x.
Q
What are the power consumption and environmental requirements for the PA-E3?
A
The PA-E3 consumes approximately 15 W, operates between 0°C to 40°C, and requires 10%–90% non-condensing humidity per Cisco environmental specifications.
Q
Can I hot-swap the PA-E3 Serial Port Adapter in a Cisco 7200 chassis?
A
No, the PA-E3 is not hot-swappable; you must power down the router before removing or installing the module to avoid hardware damage.
Q
What warranty and support options are available for the Cisco PA-E3 module?
A
Cisco offers a one-year limited hardware warranty on the PA-E3, with optional SMARTnet service for 24×7 support, software updates, and expedited hardware replacement.
Q
Are there recommended spares or replacement parts for the PA-E3 adapter?
A
Recommended spares include E3 G.703 cables, surge suppressors, and a backup PA-E3 module; contact Cisco or your reseller for SKUs and compatibility.
Q
How can I upgrade the PA-E3 firmware or software for new features and fixes?
A
Firmware updates are bundled with Cisco IOS releases; download the latest IOS image from Cisco.com and install it via TFTP or USB, then reload the router.
