Network Optimization Steps for Highfive Video Conferencing


Under most circumstances, the Highfive hardware and service are both plug-and-play, requiring no additional configuration steps for a great experience. However, in some environments, degraded performance may occur if a network restricts or bottlenecks Highfive traffic. 


If you’ve met the the Highfive Minimum Network and System Requirements and are experiencing degraded Highfive call quality, the network optimization recommendations outlined in this article have been proven helpful with ensuring a consistent high-quality experience for many of our customers.


Important: Every network is different and some are even configured a specific way for legal reasons. Consult with with your IT team or Network Administrator before making any changes to ensure you are not violating any policies set by your organization.


Highfive / Dolby Configuration

  1. Highfive strongly urges you to consider a dedicated VLAN for Highfive equipment that is unrestricted with access to external services and other devices on the same VLAN.
    • There is no feature of Highfive that requires end-user software clients to access these devices directly on the local network, so we consider this to be safe.
    • Example: As an authenticated Highfive user, you can move your call up to a Highfive device from your mobile phone that is on 4G/LTE (not on the same VLAN).
  2. A separate VLAN will ensure that there is no possibility of any Highfive requirements compromising your corporate LAN and prevents any flow between secure LAN services and Highfive.


Switch / Router Ethernet Settings

  1. Ensure that your switch / routers are capable of negotiating full-duplex 1Gbps, or at least 100Mbps Ethernet links.
    • The Highfive device will fail to establish a link if connected to switches/routers that don't meet these requirements.
  2. If your network is limited to 100 Mbps, we recommend enabling a Level 2 "flow-control" setting, if available.
  3. We recommend using a PoE-capable switch for the Dolby conference phone.
    • If one isn’t available and you need to use a PoE injector instead, use a reliable and high-quality brand that delivers steady power and data links.
    • You can purchase the PoE injector that our Highfive office uses in our conference rooms by contacting your Highfive Account Executive.



Bandwidth Guidelines

  1. Avoid using any bandwidth or traffic-shaping tools on the switch or router which restricts the bandwidth available to the devices.
    • The bandwidth usage of the Highfive and Dolby devices is on average 3Mbps for uplink and 4.5Mbps for downlink when used for a full video conference with the maximum number of participants. However, there are sometimes brief intervals of time lasting only tens of milliseconds where the instantaneous bandwidth used is an order of magnitude higher. Bandwidth and traffic shapers may apply their bandwidth limits over these short spans of time and cause severe packet loss and audio/video quality issue, so we recommend they not be used on the Highfive device VLANs.
    • QoS for Highfive traffic is set to highest priority, which may also be called "realtime".
    • If setting rules for DSCP tagging, choose AF41. We use the same markings for video, audio and STUN because we send all media packets through the same port.
      • This tagging works for Chrome clients on OS X, Linux, ChromeOS, and some Windows configurations. In the case of Windows, it works only if the client machines are part of a domain.
  2. If there are any routing priorities set, increase Highfive’s priority.



  1. Avoid applying any application layer firewalls to the VLAN where the Highfive or Dolby devices are assigned.
    • We have observed these firewalls to disrupt peer-to-peer communication between the the camera and the conference phone, and as a side effect, these rules can affect communication with the Highfive service.
    • If you must have application layer firewalls enabled, please add a firewall rule to exempt the Highfive and Dolby devices (MAC addresses are listed on the base of each device). Your tools may also allow you to use the IP address of both units for the exception.
  2. Web proxy users can add whitelist exceptions for traffic to and from the following ports and domains:
    • * (HTTP 80, TCP 443, UDP 5005), for Highfive Meeting Control
    • * (TCP 443), for Highfive Meeting Content and Telemetry Data
    • * (TCP 443), for Highfive Meeting Signaling
    • * (TCP 443), for Dolby conference phone provisioning
    • (TCP 443), our CDN 

If you are still experiencing degraded Highfive video call quality after following these steps, please feel free to contact Highfive Support at for additional help.


Brian Huynh -

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