Technical Documentation

LN1000 Mobile Secure Router Overview

The LN1000 Secure Mobile Router is an embedded router that operates in both wire-line and wireless environments with communication nodes that are either mobile or stationary. The router provides reliable and secure data, voice, and video services. The LN1000-V processes WAN and LAN routing functions. The router offers multiple DiffServ classes and can interleave lower priority real-time data (voice traffic) with higher priority non real-time data. It is developed on 3U compact node slot interface (VITA) architecture as defined in the VITA 46.0 IEEE 1101.2 specifications and runs JUNOS Software for routing, forwarding, and security.

The software supports the following features:

  • IPv4 and IPv6 unicast forwarding
  • Routing, including OSPF, BGP, RIPv2, IS-IS, and static routes
  • Multicast, including IGMPv2, IGMPv3, PIM, SDP, DVMRP, MLD, and source-specific
  • Encapsulation, including Ethernet (MAC and tagged), PPP, and PPPoE
  • PPPoE interface to radios and link quality metrics imported into OSPF
  • IP address management, including status, DHCP, and DHCP Relay
  • Tunneling, including GRE, IP in IP, and IPsec
  • NAT and stateful firewall filters, and intrusion detection

In addition, the following features are supported on the LN1000 router:

  • Support for non-volatile memory read-only (NVMRO). As a security feature unique to the LN1000 Mobile Secure Router, NVMRO physically locks all non-volatile storage against modifications. This includes the NAND system storage, the NOR boot flash, and all Juniper Networks ID EEPROMS.
  • Support for advanced class-of-service (CoS) on Point-to-Point Protocol over Ethernet (PPPoE) interfaces, which includes policing and shaping, weighted round robin (WRR) queuing with prioritization, weighted random early detection (WRED), queuing based on PPPoE interfaces, in addition to the supported VLAN/interface.
  • Support for up to eight ports of gigabit traffic with up to 1024 logical interfaces with eight queues per logical interface and four priorities per queue. All eight ports interface with the backplane. The LN1000 router supports most Layer 2 and Layer 3 protocols, route redistribution, tunneling, multicast, routing, CoS, and security.
  • Support for location-based IP address pools for IPv4 addresses. A location pool can specify IP addresses and subnet masks for multiple locations (relative positions of cards within a shelf). You can configure an IP interface to obtain an IP address and subnet mask from a selected location pool instead of specifying an explicit IP address and subnet mask.
  • Support for PPPoE-based radio-to-router protocols. Extensions to the PPPoE protocol include:
    • Messages that define how an external device provides the router with timely information about the quality of a link connection
    • A flow control mechanism that indicates how much data the router can forward

    The router uses the information provided in these PPPoE messages to dynamically adjust the interface speed of PPP links. When OSPF is notified of this change, it adjusts the cost of the link and updates the routing tables accordingly.

  • Support for translation of Protocol Independent Multicast (PIM) join/prune messages to Internet Group Management Protocol (IGMP) or Multicast Listener Discovery (MLD) report/leave messages. To enable the use of IGMP or MLD to forward multicast traffic across the PIM domains, you can configure the rendezvous point (RP) router that resides between the edge domain and core domain to translate PIM join/prune messages received from PIM neighbors on downstream interfaces into corresponding IGMP or MLD report/leave messages. The router then transmits the report/leave messages by proxying them to one or two upstream interfaces that you configure on the RP router.
  • Support for Open Shortest Path First (OSPF) refresh and flooding reduction in stable topologies, which facilitates OSPF scaling by reducing OSPF protocol traffic overhead and maintains OSPF adjacencies and flood link-state advertisements (LSAs).

JUNOS Software on the LN1000 router supports many of the features that exist on the SRX Series Services Gateways. For further information about these features, refer to the SRX Series documentation located at:http://www.juniper.net/techpubs/hardware/junos-srx/index.html

Published: 2010-02-18