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Ciena’s 3948 is a cost-effective router designed to address the requirements for higher capacity and end-to-end disaggregated IP services at the network access, supporting 4G network evolution, 5G deployments, enterprises, and next-generation business services.

The 3948 addresses customers’ key needs, supporting routing, Multi-Protocol Label Switching (MPLS), Segment Routing (SR) label and 1/10GbE port density in a compact 1RU form factor. The 3948 features a high-capacity 64 Gb/s switching fabric supporting 4 x 1/10GbE SFP+ ports and 12 x 100MbE/1GbE SFP ports, addressing the continued demand for bandwidth and flexibility in access networks.


No. 1

Offers 64 Gb/s of non-blocking switching capacity in a compact device

No. 2

Features low footprint 1RU packaging with: – 4 x 1/10GbE SFP+ ports – 12 x 100MbE/1GbE SFP ports

No. 3

Carrier Ethernet, IP routing, and SR-MPLS

No. 4

Hardware-assisted OAM scaled to deliver services with guaranteed SLA differentiation

No. 5

SZTP for rapid, secure, and error-free turn-up of services

No. 6

Built-in RFC 2544 and ITU-T Y.1564 SAT with 10 Gb/s traffic generation and analysis

3948 Visio stencil

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  • + Interfaces
    • Ethernet Ports:
      • Ethernet Ports:
        12 x 1GbE/100MbE SFP ports 4 x 10/1GbE SFP+ ports
    • Other:
      • 1 x USB-C
      • 1 x USB-C Console
      • 1 x RJ45 1pps and Time-of-Day (ToD)
      • 1 x SMB frequency in/out or 1 pps in/out
      • 2 x SMB GNSS antenna
      • 1 x RJ45 Management (MGMT)
  • + Ethernet
    • IEEE 802.1ad Provider Bridging (Q-in-Q) VLAN full S-VLAN range
    • IEEE 802.1D MAC Bridges
    • IEEE 802.1p Class of Service (CoS) prioritization
    • IEEE 802.1Q VLANs
    • IEEE 802.3 Ethernet
    • IEEE 802.3ab 1000Base-T via copper SFP
    • IEEE 802.3ad Link Aggregation Control Protocol (LACP)
    • Layer 2 Control Frame Tunneling
    • Link Aggregation (LAG): Active/Active; Active/ Standby
    • Jumbo frames to 9216 bytes
    • VLAN tunneling (Q-in-Q) for Transparent LAN Services (TLS)
  • + Carrier Ethernet OAM
    • EVC Ping (IPv4)
    • IEEE 802.1ab Link Layer Discovery Protocol (LLDP)
    • IEEE 802.1ag Connectivity Fault Management (CFM)
    • IEEE 802.3ah EFM Link-fault OAM
    • ITU-T Y.1731 Performance Monitoring
    • RFC 2544 Benchmarking Methodology for Network Interconnect Devices Generation and Reflection at 10GbE
    • ITU-T Y.1564 Ethernet Service Activation Test Methodology
  • + Synchronization
    • External Timing Interfaces: ITU-T G.703 Frequency in or out (1.544MHz, 2.048MHz, and 10MHz)
    • ITU-T G.703 1pps and ToD in or out Mini-SMB in or out 1pps
    • ITU-T G.8262/G.8264 EED option1 and option2
    • G.8273.2 Timing characteristics of telecom boundary clocks and telecom slave clocks, Class C
    • ITU-T G.8275.1/2 T-BC
  • + Networking Protocols
    • ISO10598 IS-IS intra-domain routing protocol OSFP Segment Routing extension
    • OSFP TI-LFA Topology Independent Fast Reroute using Segment Routing
    • BGP Prefix Independent Convergence
    • EVPN FXC draft-ietf-bess-evpn-vpws-fxc-03. txt RFC-1195 Use of OSI Is-Is for Routing in TCP/IP and Dual Environments
    • RFC-1997 BGP Community Attribute
    • RFC-2328 OSPF Version 2
    • RFC-2698 A Two Rate Three Color Marker
    • RFC-2865 Remote Authentication Dial in User Service (RADIUS)
    • RFC-3031 Multiprotocol Label Switching (MPLS) Architecture
    • RFC-3032 MPLS label stack encoding
    • RFC-3107 Support BGP carry Label for MPLS
    • RFC-4271 A Border Gateway Protocol 4 (BGP-4) RFC-4360 BGP Extended Communities Attribute
    • RFC-4364 BGP/MPLS IP Virtual Private Networks (VPNs)
    • RFC-4456 BGP Route Reflection: An Alternative to Full Mesh Internal BGP (IBGP)
    • RFC-4632 Classless Inter-domain Routing (CIDR): The Internet Address Assignment and Aggregation Plan
    • RFC-4760 Multiprotocol Extensions for BGP-4
    • RFC-4762 Virtual Private LAN Service (VPLS)
    • Using Label Distribution Protocol (LDP) Signaling (HVPLS)
    • RFC-5004 Avoid BGP Best Path Transitions from One External to Another
    • RFC-5036 LDP Specification
    • RFC-5037 Experience with the LDP protocol
    • RFC-5301 Dynamic Hostname Exchange Mechanism for IS-IS
    • RFC-5302 Domain-Wide Prefix Distribution with Two-Level IS-IS
    • RFC-5303 Three-Way Handshake for IS-IS Point-to-Point Adjacencies
    • RFC-5309 Point-to-Point Operation over LAN in Link State Routing Protocols
    • RFC-5396 Textual Representation of Autonomous System (AS) Numbers
    • RFC-5398 Autonomous System (AS) Number Reservation for Documentation Use
    • RFC-5492 Capabilities Advertise with BGP-4
    • RFC-5561 LDP Capabilities
    • RFC-5668 4-Octet AS Specific BGP Extended Community
    • RFC-6241 Network Configuration Protocol (NETCONF)
    • RFC-6310 Pseudowire (PW) Operations, Administration, and Maintenance (OAM) Message Mapping
    • RFC-6793 BGP Support for Four-Octet Autonomous System (AS) Number Space
    • RFC-7737 Label Switched Route (LSP) Ping and Traceroute Reply Mode Simplification
    • SR-MPLS TI-LFA Topology Independent Fast Reroute using Segment Routing draftietfrtgwg-segment-routing-ti-lfa-03
    • RFC-7911 Advertisement of Multiple Paths in BGP
    • RFC-8214 Virtual Private Wire Service Support in Ethernet VPN
  • + Network Management
    • Alarm Management and Monitoring Configuration
    • Event and Alarm Notification/Generation
    • Comprehensive Management
    • Via CLI Management
    • Via Netconf/YANG Models
    • gRPC-based Streaming telemetry IPv4 & IPv6 Management Support IPv4 Management ACL (in-band) IPv6 Management ACL (in-band) RADIUS, AAA
    • RFC-2131 DHCP Client RFC-3046 DHCP Relay
    • RFC-5905 NTP Client
    • Secure File Transfer Protocol (SFTP) Secure Shell (SSHv2)
    • Secure Zero-Touch Provisioning (SZTP)
    • Software upgrade via FTP, SFTP TACACS + AAA
    • SNMPv2 Trap
    • SNMPv2 GET
    • Web GUI
  • + Physical Characteristics
    • Dimensions:
      • 17.5" (W) x 9.9" (D) x 1.73" (H)
      • 444mm (W) x 252mm (D) x 44mm (H)
    • Weight:
      • 170-3948-900/903 7.72lbs; 3.5kg
      • 170-3948-901/902 7.28lbs; 3.3kg
    • Power Requirements:
      • DC input: -48 Vdc (nominal)
      • AC input: 100Vac, 240 Vac (nominal)
      • 170-3948-900/903 Typical Power 34; Max. Power 42W
      • 170-3948-901/902 Typical Power 30; Max. Power 38W
  • + Standards Compliance
    • Emissions:
      • CISPR 22 Class A CISPR 32 Class A EN 300 386
      • EN 55032
      • FCC Part 15 Class A GR-1089 Issue 6
      • Industry Canada ICES-003 Class A VCCI Class A
      • VCCI Class A
    • Environmental:
      • RoHS2 Directive (2011/65/EU) WEEE 2002/96/EC
    • Operating Temperature:
      • -40°F to +149ºF (-40°C to +65°C)
    • Storage Temperature:
      • -40°F to +158°F (-40°C to +70°C)
    • Humidity:
      • Non-condensing 5% to 90%
    • Immunity (EMC):
      • GR-1089 Issue 6
      • CISPR 24
    • Power:
      • ETSI EN 300 132-2
      • ETSI EN 300 132-3
    • Safety:
      • ANSI/UL 60950-1 2nd edition 2007 CAN/CSA
      • C22.2 No. 60950-1-07 EN 60950-1
      • IEC 60825-1 2nd edition (2007)
      • IEC 60825-2 3rd edition (2004)
  • + Service Security
    • Broadcast Containment Egress Port Restriction
    • Hardware-based DOS Attack Prevention Layer 2, 3, 4 Protocol Filtering
    • User Access Rights Local user authorization

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