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ATM and Interworking Function (IWF) 61
Model 3124 User Manual B • Specifications
• QoS
- The system is able to control the bandwidth occupied by broadcast, multicast, and unknown unicast
(flooding) traffic respectively on a per VLAN basis.
- Support rate-limit profile binding per bridge port
- Support Three Color Marking (TCM) policer
- Support Ethernet rate limit per bridge port
- Support ToS (type of service) /DiffServ (differentiated services) stripping and priority queuing
- Support DSCP mapping to 802.1p
- Support selectable adopted priority queue mechanisms according to Strict Priority Queue (SPQ) and
Weighted Fair Queue (WFQ)
- Support configurable mapping function between ATM PVC and 802.1p priority queue
- Support IP CoS technology
• ICMP
- Support ICMP (Internet Control Message Protocol) function; can send/respond the ICMP request mes-
sage to/from other system
• Support IPSec/L2TP/PPTP VPN pass-through function
ATM and Interworking Function (IWF)
• Support 8 PVCs per subscriber line; VPI range is from 0 to 255 and VCI range from 32 to 65535 (ATM
Forum UNI 3.1/4.0, PVCs only). The VPI and VCI value can be created and deleted via CLI, Web-GUI,
and EMS.
• Support multi-protocol encapsulation over ATM per RFC 2684 / RFC 1483 for bridged mode and routed
mode (IPoA).
• Comply with ITU-T I.361 UNI cell format and support AAL5 per ITU-T I.363.5.
• Support line-level fault management ITU-T Rec. I.610 OA&M F5 loopback on DSL ports including both
origination and reception/return of F5 loopback cells.
• Commit the supported ATM service categories in the increasing order of UBR, nrt-VBR, rt -VBR, and
CBR on a per port basis.
• Provide PCR (peak cell rate) configurable parameter for UBR and CBR service; PCR and SCR (sustainable
cell rate) configurable parameters for rt-VBR and nrt-VBR.
• Support upstream and downstreamtraffic shaping and policing on per PVC basis.
• Support profile-based ATM traffic management (up to 252 profiles with one default and 251 user-config-
urable profiles) and the downstream/upstream ATM profile assignments are independent
• Support PPPoE transparent forwarding and PPPoE intermediate agent
• Support PPPoE/PPPoA interworking as defined in section 3.5.4 of TR-101.