ComEth3300b is a highly integrated Layer 2+ Ethernet switch providing 24 10/100TX Ethernet ports and 6 Gigabits ports. This product, built on a single height 6U board, runs in a VME chassis that only provides 5VDC power supply.

Twenty four Fast Ethernet channels are routed on rear P2 connector. According to the version, the additional Giga Ethernet channels can be are available (0/2/4) on rear P0 connector or (4/2/0) on the front panel. The front Giga Ethernet ports are available 1000BT (RJ45) or fiber (LC) interfaces. In the dual configuration, the Gigabit transceivers automatically select the media (copper or fiber) with activity. According to the selected Fiber transceiver, the ComEth 3300b provides a SX, LX or WDM (one fiber for duplex link) interface.

ComEth3300b is available in both air and conduction-cooled formats. The ultra low-power design and the thermal monitoring make the integration easier.

Auto-crossover, auto-polarity, auto-negotiation and automatic MAC address ma-nagement make the ComEth3300b a true Plug&Play layer2 switch.

This switch is fully upward compatible with ComEth3300. It provides more Giga Ethernet ports and adds some L2 enhanced functions as port aggregation, traffic rate shaping, etc.

Board specifications

Physical features

Twenty four auto-crossover 10/100BT on P2 and up to four 10/100/1000BT ports available on P0 (Max 6 GE front + rear).

Up to 4 Front Gigabits ports 1000BT or Fiber. In the dual configuration the selection between fiber or copper is automatic. The 1000SX or LX characteristics are :

VCSEL (850nm) or FP laser (1300nm) model :

• 850nm > 220m with MMF 62.5/125µm or 500m with MMF 50/125µm
• 1300nm > 550m with MMF 62,5 or 50/125µm and 10 Km with SMF 9/125µm
• 1550nm and WDM (consult us)

Front panel LEDs
Power supply and CPU Status
Switched ports : activity/link

5VDC Power supply
Up to 18 watts according to the port configuration

Rear Transition module routes ports to the rear panel
Please refer to ordering information.

Switch Management

Onboard firmware are implemented with Power on Built-In Test, maintenance functions and network (BootP/DHCP) updating functions. 

Management software provides a wide range of configuration functions on any port : transmission speed/mode, VLAN, RST/STP parameters, mirroring, etc.

Supervision functions get lots of information in real time on the switch status in particular the local temperature.

MIB and RMON counters and private information are reachable from SNMP agent, HTTP web-browser via Ethernet.

This Open Application, named SWITCHWARE, is carried out by a PowerPC processor running under LINUX.

Switching
Store-and-Forward with low last-bit-in to first-bit-out delay
Full wire-speed on each port even with 64-byte frames
Link aggregation (802.3ad) with static or LACP management

MAC level
8000 MAC unicast address with automatic aging, self-learning mechanism or static configuration
Tag extraction and insertion (802.1p), security with locked port mode, etc

Queue Buffer
Four levels of priorities queuing per port with fixed or weighted priority.

Flow Control
Back pressure and pause frame-based flow control schemes are included to support zero packet loss under temporary traffic congestion

Filtering/Forwarding Rate
Ingress storm limiting for instance broadcast discard above a threshold
Egress rate shaping

Spanning Tree Algorithm
STP (802.1D) or RSTP (802.1w) provide redundant link support and Fast port capabilities.

VLANs
Port based VLANs or VLANs full compliant with 802.1Q standard and per-VLAN forwarding databases

QoS
Layer2 : Tagged frames according to 802.1p (Tagged or untagged frames supported on each port)

Layer3 : IPv4 TOS/DS, IP V6 TC, priority override

Port Mirroring
Allows the administrator to mirror traffic from a port to an external network analyser for in-depth traffic analysis

Virtual cable tester
some of possible problems that can be diagnosed include opens, shorts, cable and termination impedance mismatches, bad connectors, etc.

Click on the diagram to zoom in

Standard Conformance
Emissions EN55022A
Immunity CEI61000-4-2 (ESD), 61000-4-3 (Electric field), 61000-4-4 (fast trasient), 61000-4-5 (Surge), 61000-4-6 (Electric conduction)

Environment specifications :
Please refer to ordering information below.

Ordering Information :

Ordering information ComEth3300b - Full Managed Fast & Gbs Ethernet switch - Layer 2/3 VME - 6U - Rear Board connections FM = Full Managed switch FB = Front Board RB = Rear Board Part number Model Features Grade 582-041-740 ComEth 3341b 24 ports_FM : 4TE wide - 24*10/100Mbs to the backplane (RB-P2) or through RTM  standard 582-041-760 ComEth 3341b 582-041-740 in extended grade extended 582-041-795 ComEth 3341b 582-041-740 in conduction-cooled grade conduction cooled 582-042-740 ComEth 3342b 28 ports_FM : 4TE wide - 24*10/100Mbs to the backplane (RB-P2) or through RTM  - 4*10/100/1000Mbs to the backplane (RB-P0) or through RTM  standard 582-042-760 ComEth 3342b 582-042-740 in extended grade extended 582-042-795 ComEth 3342b 582-042-740 in conduction-cooled grade conduction cooled 582-043-740 ComEth 3343b 30 ports_FM : 4TE wide - 24*10/100Mbs to the backplane (RB-P2) or through RTM - 4*10/100/1000Mbs to the backplane (RB-P0) or through RTM - 2*GE SX/TX_auto (FB) standard 582-043-760 ComEth 3343b 582-043-740 in extended grade extended 582-044-740 ComEth 3344b 26 ports_FM : 4TE wide - 24*10/100Mbs to the backplane (RB-P2) or through RTM - 2*10/100/1000BT (FB) standard 582-044-760 ComEth 3344b 582-044-740  in extended grade extended 582-045-740 ComEth 3345b 30 ports_FM : 4TE wide - 24*10/100Mbs to the backplane (RB-P2) or through RTM - 4*10/100/1000Mbs to the backplane (RB-P0) or through RTM - 2*10/100/1000BT (FB) standard 582-045-760 ComEth 3345b 582-045-740  in extended grade extended The Rear Transition Modules below are suitable for  VME (Fast P2) & (Gbs P0) Cometh3300b models   900-272-760 RTM07_100/1K_28 28 ports : ETE - EMI protections (P2&P0) - 24*RJ45(10/100TX) - 4*RJ45 (10/100/1000BT) extended