FAQ: Difference between revisions

152 bytes added ,  20 April 2022
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To enable the temporary static IP address, a USB keyboard is needed. When the keyboard is attached to one of the USB
To enable the temporary static IP address, a USB keyboard is needed. When the keyboard is attached to one of the USB
ports of the Allegro, start the device. Wait for two minutes to make sure that the device is fully operational.
ports of the Allegro Network Multimeter, start the device. Wait for two minutes to make sure that the device is fully operational.
Then press and hold the '''shift''' key while pressing the '''s''' key. After this procedure the device will be configured to
Then press and hold the '''shift''' key while pressing the '''s''' key. After this procedure the device will be configured to
use the IP address '''192.168.0.1''' on the LAN management interface. It is now possible to e.g. connect another
use the IP address '''192.168.0.1''' on the LAN management interface. It is now possible to e.g. connect another
computer to the LAN management interface with an IP address statically configured to e.g. '''192.168.0.100''' and from
computer to the LAN management interface with an IP address statically configured to e.g. '''192.168.0.100''' and from
that computer the user interface of the Allegro is accessible at https://192.168.0.1.
that computer the user interface of the Allegro Network Multimeter is accessible at https://192.168.0.1.
If for some reason the IP address '''192.168.0.1''' is already used in the network, the Allegro will try to
If for some reason the IP address '''192.168.0.1''' is already used in the network, the Allegro Network Multimeter will try to
set another IP address in the range of '''192.168.0.2''' - '''192.168.0.10'''.
set another IP address in the range of '''192.168.0.2''' - '''192.168.0.10'''.


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In a working setup, verifiable as described above, the "active interface overview" graph on the Top Users screen should display traffic. Here are several reasons why, the Allegro Network Multimeter may still not show you the traffic that you are expecting:  
In a working setup, verifiable as described above, the "active interface overview" graph on the Top Users screen should display traffic. Here are several reasons why, the Allegro Network Multimeter may still not show you the traffic that you are expecting:  


* Span/Mirror misconfiguration — When hooking up span/mirror port to your Allegro, make sure that the traffic you want to see is actually incorporated in the configured span/mirror port.
* Span/Mirror misconfiguration — When hooking up span/mirror port to your Allegro Network Multimeter, make sure that the traffic you want to see is actually incorporated in the configured span/mirror port.
* Virtual Link Group — If you have configured any virtual Link Groups, make sure that you are looking at the correct Link Group. I.e. the "local - default" Link Group will not plot any statistics, if all of the network traffic matches one ore more configured Link Group(s).
* Virtual Link Group — If you have configured any virtual Link Groups, make sure that you are looking at the correct Link Group. I.e. the "local - default" Link Group will not plot any statistics, if all of the network traffic matches one ore more configured Link Group(s).
* Limited analysis — The "Detail of Traffic Analysis" (settings > global settings > middle of the page) may have been lowered. Factory default, this is set to "unlimited".
* Limited analysis — The "Detail of Traffic Analysis" (settings > global settings > middle of the page) may have been lowered. Factory default, this is set to "unlimited".
* Ingress filtering — Active ingress filtering (settings > ingress filter) will prevent partial or all network traffic from being analyzed by the Allegro.  A notification, indicating active filters, will show up in the top bar on the right.
* Ingress filtering — Active ingress filtering (settings > ingress filter) will prevent partial or all network traffic from being analyzed by the Allegro Network Multimeter.  A notification, indicating active filters, will show up in the top bar on the right.


[[File:Active Filter(s) Notification.png|550x550px]]
[[File:Active Filter(s) Notification.png|550x550px]]
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Important note: Filters do NOT have an effect on network Live traffic, which will be forwarded uninterrupted and fully transparently.  
Important note: Filters do NOT have an effect on network Live traffic, which will be forwarded uninterrupted and fully transparently.  


== Allegro hardware ==
== Allegro Network Multimeter hardware ==


==== What types of SFP modules are supported? ====
==== What types of SFP modules are supported? ====
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Per default out-of-box setting (factory default), all Allegro Network Multimeter models allow up to 4 parallel captures. As of FW ≥ V3.4, the number of allowed parallel captures, can be increased up to 64, depending on model and available RAM. Note, that Increasing the number of allowed parallel captures will decrease memory capacity for the in-memory DB, therewith decrease the maximum timeframe of statistics held and presented in the web-interface. If the memory
Per default out-of-box setting (factory default), all Allegro Network Multimeter models allow up to 4 parallel captures. As of FW ≥ V3.4, the number of allowed parallel captures, can be increased up to 64, depending on model and available RAM. Note, that Increasing the number of allowed parallel captures will decrease memory capacity for the in-memory DB, therewith decrease the maximum timeframe of statistics held and presented in the web-interface. If the memory
usage is too high, the number of parallel captures might be lower/limited by the Allegro itself.
usage is too high, the number of parallel captures might be lower/limited by the Allegro Network Multimeter  itself.


To change the number of allowed parallel captures, go to "Generic -> Capture traffic -> settings" or go to "Settings -> Module settings -> Caption: Capture traffic".
To change the number of allowed parallel captures, go to "Generic -> Capture traffic -> settings" or go to "Settings -> Module settings -> Caption: Capture traffic".
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==  Protocols ==
==  Protocols ==


==== What protocols are recognized by the Allegro ====
==== What protocols are recognized by the Allegro Network Multimeter ====


As an advanced packet-based network analysis and (performance) troubleshooting solution, Allegro Packets is capable of recognizing a long list of protocols to be found in various Ethernet-based network types. Apart from the actual recognition, Allegro Network Multimeter also features extensive individual decoding and graphical representation for quite a lot of commonly seen communication protocols such as TCP, SSL, SIP, RTP, DNS, DHCP, IEC 60870-5-104, PROFINET and many more.
As an advanced packet-based network analysis and (performance) troubleshooting solution, Allegro Packets is capable of recognizing a long list of protocols to be found in various Ethernet-based network types. Apart from the actual recognition, Allegro Network Multimeter also features extensive individual decoding and graphical representation for quite a lot of commonly seen communication protocols such as TCP, SSL, SIP, RTP, DNS, DHCP, IEC 60870-5-104, PROFINET and many more.
A full list of protocols supported and recognized by the Allegro Network Multimeter can be found on the page -> [[Supported protocols]]
A full list of protocols supported and recognized by the Allegro Network Multimeter can be found on the page -> [[Supported protocols]]
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