| Description |
-
Four E3 ports
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Power requirement: 0.38 A @ 48 V (18 W)
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Fine-grained queuing per logical interface
|
| Hardware features |
-
Clear-channel (34.368-Mbps) and subrate E3
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Unframed or ITU G.751 framing
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Data service unit (DSU) functionality
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Subrate and scrambling:
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Digital Link/Quick Eagle
-
Kentrox
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HDB3 line encoding
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Full bit error rate test (BERT)
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Local and remote loopback testing
|
| Software features |
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Quality of service (QoS) per port: weighted round-robin
(WRR), random early detection (RED), weighted random early detection
(WRED)
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Simple Network Management Protocol (SNMP): E3 MIB, QoS
MIB
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Input policing and output shaping
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Provider-side rate limiting
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Full data link connection identifier (DLCI) range with
sparse channel numbering
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Per-DLCI queues with weighted deficit round-robin and
strict priority
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Encapsulations:
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High-Level Data Link Control (HDLC)
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Frame Relay
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Circuit cross-connect (CCC)
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Translational cross-connect (TCC)
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Point-to-Point Protocol (PPP)
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JUNOS Release 7.0 or later is required to configure graceful Routing
Engine switchover (GRES).
|
| Cables and connectors |
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Standard E3 BNC coaxial cable interfaces
|
| LEDs | One tricolor per port:
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Off—Not enabled
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Green—Online with no alarms or failures
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Amber—Online with alarms for remote failures
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Red—Active with a local alarm; router has detected
a failure
|
| Alarms, errors, and events |
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Alarm indication signal (AIS)
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Equipment failure (does not affect service)
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Frame error
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Line code violation
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Loss of signal (LOS)
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Out of frame (OOF)
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Yellow alarm bit (A-bit) disagreements
|
| Instrumentation (counters) |
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Layer 2 per-queue packet and byte counters
|
