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In-Line Installation: Difference between revisions
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=== What is the '''In-Line''' mode? === | === What is the '''In-Line''' mode? === | ||
The '''In-Line mode''' allows the Allegro to work as a transparent Bridge. Pairs of network ports form a group where all received traffic is forwarded immediately to the other port of the pair. It is the default configuration of the Allegro Network Multimeter that 2 port pairs build a transparent Bridge. | The '''In-Line mode''' allows the Allegro Network Multimeter to work as a transparent Bridge. Pairs of network ports form a group where all received traffic is forwarded immediately to the other port of the pair. It is the default configuration of the Allegro Network Multimeter that 2 port pairs build a transparent Bridge. | ||
=== How should the '''In-Line mode''' be used? === | === How should the '''In-Line mode''' be used? === | ||
The Allegro can be installed between 2 network devices. As an example, the Allegro can be installed between a Switch and an Access Point. | The Allegro Network Multimeter can be installed between 2 network devices. As an example, the Allegro Network Multimeter can be installed between a Switch and an Access Point. | ||
The '''In-Line mode''' is designed for links where the downtime of a link is '''not''' critical and where a delay and jitter of a few microseconds is acceptable. See [[#Limitations]] for more details. | The '''In-Line mode''' is designed for links where the downtime of a link is '''not''' critical and where a delay and jitter of a few microseconds is acceptable. See [[#Limitations]] for more details. | ||
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Various 1G-100G Base-T and Base-X port expansion cards, featuring RJ45, SFP+, SFP28, QSFP and QSFP28 connection options. | Various 1G-100G Base-T and Base-X port expansion cards, featuring RJ45, SFP+, SFP28, QSFP and QSFP28 connection options. | ||
All | All Allegro Netwok Multimeters with network card expansion slots support the '''In-Line mode''' by default. All expansion cards have either '''2''' or '''4''' network ports. Each card forms '''1''' or '''2''' Bridges. On expansion cards with '''4''' ports, the two left and the two right ports are the Bridge pairs. | ||
=== Bypass Fail-over cards === | === Bypass Fail-over cards === | ||
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=== PoE provisioning cards === | === PoE provisioning cards === | ||
Power over Ethernet bypass is not supported by the Allegro. A PoE expansion card can be installed to support PoE. Alternatively a PoE injector can be used if PoE is required. | Power over Ethernet bypass is not supported by the Allegro Network Multimeter. A PoE expansion card can be installed to support PoE. Alternatively a PoE injector can be used if PoE is required. | ||
=== nanosecond time stamping cards === | === nanosecond time stamping cards === | ||
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=== Link setup === | === Link setup === | ||
The Allegro negotiates every port of a Bridge pair independently. This can lead to a link speed mismatch. As an example, an installation between a 1GBit/s Switch port and a 100 MBit/s VoIP telephone will lead by default to a speed mismatch. The Allegro will show a warning if there is a speed mismatch. | The Allegro Network Multimeter negotiates every port of a Bridge pair independently. This can lead to a link speed mismatch. As an example, an installation between a 1GBit/s Switch port and a 100 MBit/s VoIP telephone will lead by default to a speed mismatch. The Allegro Network Multimeter will show a warning if there is a speed mismatch. | ||
You can check if there is a mismatch at '''Interface stats'''. | You can check if there is a mismatch at '''Interface stats'''. | ||