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In-Line Installation: Difference between revisions
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This section describes the In-Line installation | This section describes the Allegro Network Multimeter In-Line installation. | ||
== General == | == General == | ||
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=== DISCLAIMER === | === DISCLAIMER === | ||
Allegro recommends a separate Tap, a Packet Broker or mirror port for productive network links. Please use the '''In-Line''' only if the failure of a link does '''not''' cause | Allegro recommends a separate Tap, a Packet Broker or mirror port for productive network links. Please use the '''In-Line''' only if the failure of a link does '''not''' cause problems. | ||
=== 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 | 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. | ||
=== 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 can be installed between 2 network devices. As an example, the Allegro 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. | ||
=== Where can I configure the '''In-Line Mode''' === | === Where can I configure the '''In-Line Mode?''' === | ||
The '''In-Line Mode''' can be configured at '''Settings''' → '''Global Settings''' → '''Packet processing mode'''. The Interfaces can be configured to '''Bridge Mode''' or '''Sink Mode'''. The '''Bridge Mode''' will enable | The '''In-Line Mode''' can be configured at '''Settings''' → '''Global Settings''' → '''Packet processing mode'''. The Interfaces can be configured to '''Bridge Mode''' or '''Sink Mode'''. The '''Bridge Mode''' will enable packet forwarding to the Ethernet pair ports. | ||
[[File:Bridge mode.png|800px]] | [[File:Bridge mode.png|800px]] | ||
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=== Devices with port expansion cards === | === Devices with port expansion cards === | ||
All Allegros 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 | All Allegros 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 expansion cards === | === Bypass expansion cards === | ||
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=== Performance limitations === | === Performance limitations === | ||
The software bypass can forward several million packets per second, depending on the Allegro. If a packet loss on the bridge is not accepable for multi-million packets per second, please use a | The software bypass can forward several million packets per second, depending on the Allegro. If a packet loss on the bridge is not accepable for multi-million packets per second, please use a Tap or similar. | ||