When creating the PepVPN /SpeedFusion profiles an option can be selected to show advanced settings for each configuration.
These advanced settings can be used to manipulate the data traffic in the SpeedFusion profile and overcome common problems.
The following advanced settings are configurable from inControl:
Suppress Endpoint IPs
Removes endpoint IP’s from the hub site configuration. This will prevent unnecessary configuration updates (and link disconnections) on the hub site whenever one of the endpoint IP addresses change.
Unless your network requires that PepVPN connections must be initiated from the hub site, enabling this option is recommended.
If hub-initiated connections are required, configuration update frequency can be reduced by enabling dynamic DNS addressing on the associated endpoints.
Changing this option will cause all existing connections in this profile to disconnect and reconnect once.
L2 Bridging VLANs
NAT Mode and Layer 2 Bridging options cannot both be active at the same time.
These settings are common to all PepVPN Layer 2 bridges on each device, and will cause issues if set differently in multiple profiles
The configuration precedence is as follows
| Remote Network Isolation | Enabled | Disabled | |
| Spanning Tree Protocol | Enabled | Disabled | |
| Site IP Address | Do Not Override | By DHCP | As None |
Site IP Address settings are unavailable for FusionHub devices, and will always be treated as “Do Not Override”
This setting is currently unable to be used when multiple tunnels are configured between a single pair of devices.
Link Settings
Settings for individual links within the PepVPN SpeedFusion tunnel can be configured in the Advanced Link Settings.
A new window will open after selecting this option.
Link Name
Rename the default link name.
Tunnel Name
Rename the Tunnel Name.
Data Port
Set a custom data port (Default UDP 4500) to be used for this link including an option to use TCP.
WAN Smoothing
WAN Smoothing can prevent packet loss without incurring any latency penalty, at the cost of a substantial bandwidth overhead.
This is suitable for streaming applications where the average bitrate requirement is much lower than the WAN’s available bandwidth.
| The expected overhead of Normal is up to 100% |
| The expected overhead of Medium is up to 200% |
| The expected overhead of High is up to 300% |
| The expected overhead of Maximum depends on the number connected, active tunnels |
Smoothing Cap
In cases where there the number of active WAN-to-WAN connections is lower than the WAN Smoothing setting, smoothing data can be sent multiple times across the same connection.
| Default | Each connection will be limited to the primary smoothing stream. |
| Normal | Each connection will allow a single redundant stream. |
| Medium | Each connection will allow up to two redundant streams. |
| High | Each connection will allow up to three redundant streams. |
This option is only available on devices running firmware 7.1.1 or above.
FEC
Forward Error Correction (FEC) can help to recover packet loss by using extra bandwidth to send redundant data packets. Higher FEC level will recover packets on a higher loss rate link.
The expected overhead of Low is 13.3% and High is 26.7%.
This option will only be active on links where both peers are using PepVPN version 8.0.0 or above.
Path Cost
Base OSPF cost for the individual link used to determine the best route through the network.
The higher the cost the less preferable the route (i.e. traffic will prefer the path with the lowest cost.)
Receive Buffer
Receive Buffer can help to reduce out-of-order packets and jitter but will introduce extra latency to the tunnel.
By default, the buffer is disabled, with a maximum buffer size of 2000 ms.
This option is only available on devices running firmware 7.1.0 or above.
IP ToS
If enabled, the ToS value of the data packets will be copied to the PepVPN header during encapsulation.
Max Latency Diff
Maximum allowable difference in round trip time (in milliseconds) between the highest and lowest latency connections.
Connections exceeding this limit will be temporarily unused for data transfer until latency conditions improve.
Upload Cap
Maximum upload bandwidth for this link.
This value will be reduced to a value no higher than the peer’s maximum download bandwidth for this link.
Advanced WAN Settings
The WAN priority can be modified within this section.
Only the WAN connection(s) with the highest priority will be utilized, with the connection failing over in order of priority. Speedfusion-capable devices may set multiple WAN connections to the same priority.