1,775
edits
FAQ: Difference between revisions
Jump to navigation
Jump to search
no edit summary
No edit summary |
No edit summary |
||
| Line 4: | Line 4: | ||
'''What is the difference between the Monitor interfaces and the Management interfaces? ''' | '''What is the difference between the Monitor interfaces and the Management interfaces? ''' | ||
The Monitor interfaces are used to passively analyze traffic and cannot be used for management functions like accessing | The Monitor interfaces are used to passively analyze traffic and cannot be used for management functions like accessing | ||
the user interface. These interfaces do not generate any traffic apart from forwarding traffic received on the adjacent | the user interface. These interfaces do not generate any traffic apart from forwarding traffic received on the adjacent | ||
| Line 14: | Line 15: | ||
'''How can I monitor the traffic of a single computer? ''' | '''How can I monitor the traffic of a single computer? ''' | ||
The easiest way of monitoring and analyzing the traffic of a single device like a computer is to configure the | The easiest way of monitoring and analyzing the traffic of a single device like a computer is to configure the | ||
*Allegro Network Multimeter* in bridge mode. The device to be monitored is connected to one interface of a bridged pair | *Allegro Network Multimeter* in bridge mode. The device to be monitored is connected to one interface of a bridged pair | ||
| Line 25: | Line 27: | ||
'''What is the difference between bridge mode and sink mode?''' | '''What is the difference between bridge mode and sink mode?''' | ||
If the *Allegro Network Multimeter* is configured to sink mode, all Monitor interfaces act similar in a way that they just | If the *Allegro Network Multimeter* is configured to sink mode, all Monitor interfaces act similar in a way that they just | ||
receive traffic which is then analyzed by the device but not sent out again. The device acts as a traffic | receive traffic which is then analyzed by the device but not sent out again. The device acts as a traffic | ||
| Line 43: | Line 46: | ||
== | == DHCP server == | ||
If the used DHCP server provides some kind of log output or an overview of devices for which IP address leases have | If the used DHCP server provides some kind of log output or an overview of devices for which IP address leases have | ||
| Line 53: | Line 56: | ||
== | == WIFI == | ||
Every *Allegro Network Multimeter* comes with an USB to WIFI adapter. In the factory default configuration the adapter will | Every *Allegro Network Multimeter* comes with an USB to WIFI adapter. In the factory default configuration the adapter will | ||
| Line 66: | Line 69: | ||
== | == Display == | ||
The *Allegro Network Multimeter* 200 comes with a HDMI connector and | The *Allegro Network Multimeter* 200 comes with a HDMI connector and | ||
| Line 78: | Line 81: | ||
== | == KVM == | ||
The video output of the device displaying the management IP addresses | The video output of the device displaying the management IP addresses | ||
| Line 90: | Line 93: | ||
''' What can I do with the integrated KVM port?''' | ''' What can I do with the integrated KVM port?''' | ||
The | |||
The Allegro Network Multimeter 1000 and 3000 series devices contain a KVM/IPMI management module from Supermicro by | |||
which several hardware management functions like powering the device on and off, system health messages and much | which several hardware management functions like powering the device on and off, system health messages and much | ||
more can be accessed. It is also possible to view the video output of the device over the network from which the | more can be accessed. It is also possible to view the video output of the device over the network from which the | ||
| Line 106: | Line 110: | ||
'''I do not have a WIFI client and I do not have a DHCP server. How can I access the Allegro Network Multimeter? ''' | '''I do not have a WIFI client and I do not have a DHCP server. How can I access the Allegro Network Multimeter? ''' | ||
It is possible to make the | |||
It is possible to make the Allegro Network Multimeter set a temporary static address on the LAN Management interface. | |||
It will return to the configured behavior for the LAN Management interface after the next restart. | It will return to the configured behavior for the LAN Management interface after the next restart. | ||
| Line 129: | Line 134: | ||
''' What kind of user data is stored on the | ''' What kind of user data is stored on the Allegro Network Multimeter?''' | ||
All metadata and statistics are stored in the device's main memory and are gone as soon as the device is rebooted, | All metadata and statistics are stored in the device's main memory and are gone as soon as the device is rebooted, | ||
powered off or the packet processing is restarted. Any user data that can be derived from these statistics is therefore | powered off or the packet processing is restarted. Any user data that can be derived from these statistics is therefore | ||
| Line 144: | Line 150: | ||
'''How can I reset the | '''How can I reset the Allegro Network Multimeter to a default configuration? ''' | ||
There are two ways to reset the configuration of the device. | There are two ways to reset the configuration of the device. | ||
| Line 165: | Line 172: | ||
== '''System behavior ''' == | ==''' System behavior '''== | ||
''' Where does the | ''' Where does the Allegro Network Multimeter display L1 issues like bad CRC frames?''' | ||
Issues like these are accounted for the Monitoring interface on which the issue was encountered and the respective | Issues like these are accounted for the Monitoring interface on which the issue was encountered and the respective | ||
statistics are available on the 'Interface stats' page in the 'Errors' column. For an explanation of the error | statistics are available on the 'Interface stats' page in the 'Errors' column. For an explanation of the error | ||
| Line 179: | Line 187: | ||
''' What happens in case of a system overload?''' | ''' What happens in case of a system overload?''' | ||
In case of a system overload, a prominent warning is displayed at the top of the user interface for a few seconds | In case of a system overload, a prominent warning is displayed at the top of the user interface for a few seconds | ||
and these warnings and the time when the error occurred can be reviewed on the 'Info' -> 'Status' page. As long as there are | and these warnings and the time when the error occurred can be reviewed on the 'Info' -> 'Status' page. As long as there are | ||
| Line 187: | Line 196: | ||
under the 'Not processed' section and is titled 'due to overload'. | under the 'Not processed' section and is titled 'due to overload'. | ||
When the | When the Allegro Network Multimeter is operating in bridge mode and packets cannot be processed due to a system | ||
overload, a software bypass will ensure that these packets are still forwarded to the adjacent Monitoring interface. | overload, a software bypass will ensure that these packets are still forwarded to the adjacent Monitoring interface. | ||
| Line 195: | Line 204: | ||
''' What happens if the maximum number of stored connections has been reached?''' | ''' What happens if the maximum number of stored connections has been reached?''' | ||
In this case, the *Allegro Network Multimeter* will start freeing up memory by removing historic statistical data which | In this case, the *Allegro Network Multimeter* will start freeing up memory by removing historic statistical data which | ||
lies before a certain point in time. This cutoff time is constantly adjusted to provide the best possible use of the | lies before a certain point in time. This cutoff time is constantly adjusted to provide the best possible use of the | ||
| Line 205: | Line 215: | ||
''' I can only see the traffic of the last day. How can I increase this period?''' | ''' I can only see the traffic of the last day. How can I increase this period?''' | ||
If the system does not provide a sufficient look back-in-time with the given traffic, it may help to deactivate certain | If the system does not provide a sufficient look back-in-time with the given traffic, it may help to deactivate certain | ||
features that provide very detailed information but also consume a large amount of memory. Features that typically | features that provide very detailed information but also consume a large amount of memory. Features that typically | ||
| Line 217: | Line 228: | ||
''' What happens to the data after shutdown, reboot, or restart processing?''' | ''' What happens to the data after shutdown, reboot, or restart processing?''' | ||
The Allegro Network Multimeter uses an In-Memory database to store the | The Allegro Network Multimeter uses an In-Memory database to store the | ||
metadata of the packets it processes. This metadata will be lost when the | metadata of the packets it processes. This metadata will be lost when the | ||
| Line 237: | Line 249: | ||
''' What types of SFP modules are supported?''' | ''' What types of SFP modules are supported?''' | ||
This depends on which SFP+ ports are used. The following table shows what kind of modules are supported in which | This depends on which SFP+ ports are used. The following table shows what kind of modules are supported in which | ||
ports: | ports: | ||
| Line 283: | Line 296: | ||
''' What bypass options are available?''' | ''' What bypass options are available?''' | ||
Two bypass options are available: | Two bypass options are available: | ||
| Line 295: | Line 309: | ||
''' How does the bypass work?''' | ''' How does the bypass work?''' | ||
If the Allegro Network Multimeter contains a bypass option, it is only active when the device is configured to operate | If the Allegro Network Multimeter contains a bypass option, it is only active when the device is configured to operate | ||
in bridge mode. The bypass activates when the device is powered off, when the device is starting but is not yet | in bridge mode. The bypass activates when the device is powered off, when the device is starting but is not yet | ||
| Line 313: | Line 328: | ||
''' What does the question mark on packets/bytes counters mean?''' | ''' What does the question mark on packets/bytes counters mean?''' | ||
The Allegro Network Multimeter stores historical traffic data in | The Allegro Network Multimeter stores historical traffic data in | ||
different time resolutions depending on the age of the data. | different time resolutions depending on the age of the data. | ||
| Line 333: | Line 349: | ||
'''How can I print statistics? ''' | '''How can I print statistics? ''' | ||
The *Allegro Network Multimeter* web interface can be printed by using | The *Allegro Network Multimeter* web interface can be printed by using | ||
the built-in printing support of your browser. Just navigate to the desired | the built-in printing support of your browser. Just navigate to the desired | ||
| Line 351: | Line 368: | ||
''' Which time stamps are used during packet ring buffer replay?''' | ''' Which time stamps are used during packet ring buffer replay?''' | ||
Packet ring buffer replay will use the original time stamps of the packets as they were captured. Therefore the replay | Packet ring buffer replay will use the original time stamps of the packets as they were captured. Therefore the replay | ||
recreates the original sequence and timing of packets in the displayed statistics. | recreates the original sequence and timing of packets in the displayed statistics. | ||
| Line 362: | Line 380: | ||
''' How many captures can be used in parallel?''' | ''' How many captures can be used in parallel?''' | ||
The Allegro Network Multimeter 200 supports up to 3 parallel and the | The Allegro Network Multimeter 200 supports up to 3 parallel and the | ||
1000/3000 model supports up to 4 parallel captures. If the memory | 1000/3000 model supports up to 4 parallel captures. If the memory | ||
usage is too high, the number of parallel captures might be lower. | usage is too high, the number of parallel captures might be lower. | ||