Specifications

System Description
1-6 Overview
• Rate enforcement (CIR) with automatic rate fallback via traffic/adaptive shaping when the
network is congested. Automatically restores normal rates when congestion removed
• Congestion control: Backward and Forward Explicit Congestion Notification (BECN/FECN)
• Standard LMIs: ILMI, ANSI Annex D, CCITT Annex A and:
• Auto option for LMI detection/adaptation
• None option for directly connecting XSRs
• Periodic Keep-Alive messages to learn of connection problems
• Multi-protocol interconnect over Frame Relay - RFC-2427
• RFC-2390 Frame Relay Inverse ARP to discover IP address of remote peer when used in multi-
point mode and responds to incoming Inverse ARP requests independent of P2P or MP2P
• Multiple logical interfaces over the same physical Frame Relay port: sub-interfaces
• Quality of Service: standard FIFO queuing, or IP QoS on DLCIs.
• Max PDU size of 1600 bytes
• Traffic shaping
• Frame Relay Fragmentation Implementation Agreement (FRF.12)
• Data Communications Equipment (DCE) support
• Frame Relay over ISDN
• Remote Auto Install over Frame Relay
Dynamic Host Configuration Protocol (DHCP)
• Temporary or permanent network (IP) address allocation to clients
• Network configuration parameter assignment to clients
• Persistent storage/database of network values for network clients - Bindings Database
• Persistent storage of network client lease states kept across reboot
• Persistent and user-controllable conflict avoidance to prevent duplicate IP address including
configurable ping checking
• Visibility of DHCP network activity and leases through operator reports statistics and logs
•DHCP Client
Integrated Services Digital Network (ISDN) - BRI/PRI
• Circuit Mode Data (CMD): Channels (DS0s) are switched by the CO to the destination user for
the duration of the call
• Outgoing calls supported for Backup, DoD/BoD
• Incoming calls routed to the correct protocol stack based on called number/sub-address and
calling number/sub-address
• Permanent B-channel support, i.e. 64 or 128 kbps lease line. Each BRI port can be set for CMD
or Leased-Line mode of operation
• BRI supported switches: ETSI