DM4004 Metro Ethernet Modular Switch

DM4004 Metro Ethernet Modular Switch6U chassis for 19’’ racks. Up to 4 interface cards, 2 MPU redundant cards, 2 GPC cards, FAN module and redundant power supply input. The backplane is responsible for all traffic interconnections and cards management.

DM4004 Datasheet


  • Compatible with all MPUs and interface cards of the DM4000 product family
  • Passive backplane, with up to 384Gbit/s non-blocking capacity
  • Chassis supports up to 192 x 1Gbit/s Ethernet interfaces or 8 x 10Gbit/s Ethernet interfaces
  • Redundant power supply input for -48VDC. Redundant power supply in each interface module
  • The equipment is managed by the NMS DMView. Topological view, circuit provisioning, status and performance monitoring are some of the many features available.
  • Recovery time of less then 50ms when operating L2 Metro Ethernet rings
  • OpenFlow support

Wire Speed L2 & L3

  • Wire speed packet Switching in both L2 and L3, with switch fabric of up to 384Gbit/s. Level 2 and 3 protocols are built by software in order to generate MAC tables and IP routes, but the L2 switching and the L3 routing are both done via hardware.

IP/MPLS Networks

  • DM4000 product family supports static and dynamic routing – RIPv2, OSPFv2 and BGPv4. TLS – Transparent LAN Services – is possible by creating L2 VPN over MPLS. Supports the creation of L3 VPN over MPLS by using BGP as per RFC 2547.


  • Centralized FCAPS management available by using DMView over Windows and Solaris platforms. Command Line Interface – CLI) with automatic syntax command help and SSH, Telnet and RS232 console parameters are available. Internal web server with SSL, SNMP v1, v2, v3 and 4 RMON groups can be used. In order to allow the standalone use, all interface cards are equipped with optional Ethernet interface for out-of-band management.


  • DM4004 allows the creation of complex Access Control Lists (ACLs), with multiples comparison and action parameters that allow packet change, modification, forward, discharge or prioritization.


  • Cabling and network diagnosing tools are available. It is possible to test cabling problems, showing the approximate distance of the occurrence. Interface and packet flow monitoring is also available. It is possible to redirection one interface traffic for a different one.

QoS Implementation

  • DM4004 has 8 queues per interface, with prioritization algorithms that allow to determine which data will be prioritized, which will be the queue priority, what will be the minimum forwarding tax or a combination of all these techniques. The classification may be done according to: IEEE 802.1p; IP Precedence fields, or DSCP; TCP and UDP interfaces, among other possibilities; data treatment up to level L7.


  • Band control with granularity of up to 64kbit/s on CIR (Committed Information Rate) and PIR (Peak Information Rate) can be applied to the incoming traffic and to the outgoing traffic ports. It can also be applied to a certain packet flow by using filters.


  • DM4000 product line is equipped with mechanisms that guarantee safe operation and easy maintenance of the equipment installed. Besides the use of cryptographic communication protocols, it is possible to specify, by using filters, which equipment may have access to the network devices.


  • By using local or remote Syslog, RADIUS and TACACS+ user authentication, e-mail alarm notification, unique SNTP clock, protection against Denial of Service and port authentication via 802.1x, it is possible to build an extremely reliable management structure.


  • Metro Ethernet applications can take advantage of features like: limitation of maximum MAC numbers per port or per VLAN; protection mechanisms for L2 and L3 protocols against network attacks; band limitation for broadcast and multicast traffic; destination lookup failure (DLF).


  • 4.096 virtual LANs can be created simultaneously, according to IEEE 802.1Q. Double tagging (Q-in-Q) is also available, allowing the creation of Transparent LAN Services (TLS). VLANs can be defined by protocol, MAC address and by IP-subnet, with port overlap being possible on port-based VLANs. Dynamic configuration can be done by using GVRP protocol.

Protection Mechanisms

  • Spanning Tree protocols are available including RSTP, which has shorter convergence times. MSTP can be used for better resource usage and higher scalability. EAPS is ideal for less than 50 milliseconds protection in Ethernet rings.  The link aggregation feature can group physical ports forming logical ports with automatic load balancing and typical recovery time of less than 200 milliseconds. All those features enable the construction of protected topologies with quick fail restoration for Metro Ethernet applications.


DM4000 Application
DM4000 Series
DM4000 Application
Complete Metro Ethernet
DM4000 Application
Pseudowire convergence
DM4000 Application
DSLAM Connectivity
DM4000 Application
Metro Ethernet over Legacy

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