IPmux-155L

Virtuālā TDM kanāla organizēšana

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IPmux®-155L is a pseudowire gateway that transports TDM traffic (originating from legacy circuit-switched networks) over packet-switched networks (PSNs). This is achieved by converting TDM data streams
coming from the TDM ports into packets transported over the PSN.

IPmux-155L includes the following ports:

• 1 + 1 redundant STM-1 or 32 E1 ports
• Four Gigabit Ethernet ports with traffic protection
• 32 fiber optic or electrical Fast Ethernet user ports.

PSEUDOWIRE FUNCTIONALITY

The ASIC-based architecture provides a robust and high-performance pseudowire solution with minimal processing delay. The unit employs SAToP, CESoPSN and TDMoIP pseudowire encapsulation methods. Proper balance between PSN throughput and delay is achieved via configurable packet size. A jitter buffer compensates for packet delay variation (jitter) of up to 200 msec in the network.

ETHERNET INTERFACE

IPmux-155L features the following PSN ports:

• Four Gigabit Ethernet ports withSFP-UTP combo connectors
• 32 Fast Ethernet ports with fiber optic SFP or UTP connectors.

The GbE interface operation complies with
IEEE 802.3, 802.1Q and 802.1p requirements.

Link aggregation is performed as per 802.3ad (with or without LACP). This enables operators to use up to four Ethernet links as a single virtual interface, sharing traffic load and providing link resiliency.

ETHERNET CAPABILITIES

IPmux-155L includes an internal bridge, operating in VLAN-aware and VLAN-unaware modes. VLAN stacking can be used for traffic separation between different users or services, by defining a service provider
VLAN ID per customer or service. When VLAN stacking is used, a service provider VLAN tag is added to the user traffic and removed from network traffic. Both service provider VLAN ID and service provider VLAN priority can be defined. User traffic can be queued and prioritized according to VLAN priority and ToS/Diffserv. Ingress and egress rate can be limited per user and network ports.
Policing and classification of the traffic flows are performed between any ingress and any egress Ethernet port of the device. IPmux-155L monitors traffic with specified flow parameters, allocates
bandwidth, forwards traffic to different queues according to classification parameters etc.

MANAGEMENT CAPABILITIES

• The unit can be managed using different ports and applications:
• Local out-of-band management via a terminal connected to the RS-232 port
• Remote out-of-band management via the dedicated 10/100BaseT port
• Remote inband management via the GbE or FE interface. Remote management is performed using Telnet or RADview, RAD’s SNMP-based EMS.

Software is downloaded via the local terminal, using XMODEM/YMODEM, or remotely, using TFTP/FTP. The Syslog protocol is used by IPmux-155L to generate and transport event
notification messages over IP networks to the central Syslog server. The Syslog operation is compliant with the RFC 3164 requirements.

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