This section outlines some known issues.

Cisco Switch Compatibility

Energy Efficient Ethernet/Flow Control (Pause Frames) Compatibility Table

Cisco >> Vivi

Energy Efficient Ethernet on and Flow Control on

Energy Efficient Ethernet on and Flow Control off

Energy Efficient Ethernet off and Flow Control on

Energy Efficient Ethernet off and Flow Control off

1Gb & AC Adapter

Compatible

Incompatible

Compatible

Incompatible

1Gb & PoE Adapter *

Incompatible

Incompatible

Compatible

Compatible

100Mb & AC Adapter

Incompatible

Incompatible

Compatible

Compatible

100Mb & PoE Adapter

Incompatible

Incompatible

Compatible

Compatible


*This combination is included for completeness but in reality it wouldn't be used as the PoE splitters only have 100Mbps throughput.

Current Bugs with Cisco Hardware

Catalyst 2960, 3560, 3750

Symptoms:

When using a Cisco 2960 with an incompatible configuration you will see severely degraded performance (lag and stuttering) as bandwidth throughput will be inconsistent. In some cases, you will even see constant line protocol flapping in the Cisco CLI as follows:

Dec 30 03:34:54: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to down Dec 30 03:35:04: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to up Dec 30 03:49:50: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to down Dec 30 03:50:00: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/0/26, changed state to up 

Workaround:

The root cause of this issue is that Vivi does not support Energy Efficient Ethernet that is enabled by default on these models of switches and due to a Cisco bug it is not disabled for devices running at 100Mbps that do not support it as per the standards.

It can be disabled with this command in the Cisco CLI as follows:

CLI Command: 2960X(config-if)#no power efficient-ethernet

Further information can be found at the Cisco website: https://bst.cloudapps.cisco.com/bugsearch/bug/CSCus35889

Catalyst 9300 & 3850

Symptoms:

Multigig switches such as the 9300 & 3850 fail to auto-negotiate with Vivi resulting in no network connectivity.

Workaround:

Update the firmware for your Vivi Boxes to 2.2.1 or greater.

HP Audio Drivers

One of the most common support requests received by Vivi Support is the reporting of sound being in sync between the device you're presenting with and the Vivi Box.

This means that when you turn the volume up or down on your HP device, this also turns the volume up and down on the Vivi Receiver.

This issue tends to occur on HP devices only, and the underlying reason for this is that HP runs a Conexant driver that modifies sound differently for connected devices.

Usually when you modify your volume up, down or to mute, what you're actually doing is adjusting the sound via the WASAPI (Windows Audio Session API).

However, with the Conexant driver, this happens much further up the sound pipeline and therefore mutes any sound further down.

The way in which to fix this is to force the sound device to utilise WASAPI. HP recommends you do this by turning hardware acceleration on the audio device.

See their support page for instructions: https://support.hp.com/us-en/document/c05851794

In some cases, this doesn't resolve the problem, as the particular sound driver installed has malfunctioning hardware acceleration.

In this scenario HP recommends you install one of their updated drivers to solve the issue. See the following table for the relevant driver and download links:


2015 Models

HP EliteBook Folio 1040 G3

HP EliteBook 1030 G1

HP EliteBook 840/848/850 G3

HP ProBook 640/650 G2

HP ProBook 11 G1 EE

HP ProBook 11 G2 EE

HP EliteBook Folio G1

HP Elite x2 1012 G1

HP ProBook 430/440/446/450/470 G3

HP EliteBook 820/828 G3


Driver for 2015 models: https://downloads.vivi.io/support/2015.zip


2016 Models

HP ProBook x360 11 G1 EE

HP ProBook x360 11 G2 EE

HP ProBook 640/650 G3

HP EliteBook 840/848/850 G4

HP EliteBook x360 1020 G2

HP Elite x2 1012 G2

HP EliteBook x360 G2

HP ProBook 430/440/450/470 G4

HP EliteBook 820/828 G4

HP Pro x2 612 G2


Driver for 2016 models: https://downloads.vivi.io/support/2016.zip


2017 and 2018 Models

HP ProBook 430/440/450/470 G5

HP EliteBook x360 1040 G5

HP EliteBook x360 1030 G3

HP ProBook 640/650 G4

HP EliteBook 840/846/850 G5

HP EliteBook 840r/846r G4

HP EliteBook 840/846 G5 HC

HP Elite x2 1013 G3

HP ProBook x360 440 G1

HP EliteBook 830/836 G5

HP EliteBook 1050 G1


Driver for 2017 and 2018 models: https://downloads.vivi.io/support/2017_2018.zip