3.5.3 L2TP/PPTP

outgoing SPI value are different. However, the Incoming SPI value must match the Outgoing SPI value at the other end of the tunnel, and vice versa. The connection status on the remote endpoint of this tunnel is as the following figure shows. The SPI value is obtained via auto-negotiation.

3.5.3 L2TP/PPTP

Layer 2 VPN tunneling protocol consists of L2TP (Layer 2 Tunneling Protocol) and PPTP (Point to Point Tunneling Protocol).

Both L2TP and PPTP encapsulate packet and add extra header to the packet by using PPP (Point to Point Protocol). Table depicts the difference between L2TP and PPTP.

Protocol

Media

Tunnel

Length of Header

Authentication

 

 

 

 

 

PPTP

IP network

Single tunnel

6 bytes at least

Not supported

 

 

 

 

 

 

IP network of

 

 

 

 

UDP, frame relay

 

 

 

L2TP

virtual circuit,

Multiple tunnels

4 bytes at least

Supported

 

X.25 virtual

 

 

 

 

circuit

 

 

 

 

 

 

 

 

3.5.3.1L2TP/PPTP Tunnel

On this page, you can configure the L2TP/PPTP VPN.

Choose the menu VPN→L2TP/PPTP→L2TP/PPTP Tunnel to load the following page.

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TP-Link TL-ER6020 manual 3.5.3 L2TP/PPTP, 3.5.3.1 L2TP/PPTP Tunnel, Protocol, Media, Length of Header, Authentication
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TL-ER6020 specifications

The TP-Link TL-ER6020 is a robust and efficient router designed for small to medium-sized businesses seeking reliable network performance and advanced features. Combining dual WAN capability with comprehensive security features, it ensures that businesses can maintain consistent and secure internet connectivity, even during peak usage times or in the event of a failure from one ISP.

One of the primary features of the TL-ER6020 is its dual WAN support, which allows users to connect two different internet sources. This not only enhances reliability through load balancing but also ensures redundancy. In cases where the primary WAN connection fails, the router can seamlessly switch to the secondary connection, minimizing downtime and maintaining business operations.

Security is a critical aspect of any network appliance, and the TL-ER6020 does not disappoint. It comes equipped with multiple security features, including advanced firewall capabilities, IP/MAC/URL filtering, and DoS attacks prevention. These tools work together to provide a secure network environment, safeguarding sensitive business data from unauthorized access and potential threats.

The router also supports VLAN (Virtual Local Area Network) technology, which allows businesses to segment their networks for better performance and security. By creating separate networks for different departments or functions, companies can enhance their network management and control traffic flow more efficiently.

Additionally, the TL-ER6020 features quality of service (QoS) capabilities that prioritize network traffic based on user needs. This ensures that critical applications, such as VoIP or video conferencing, receive the bandwidth they require for optimal performance, while less critical traffic is deprioritized during peak times.

For user management, the TL-ER6020 includes an intuitive web-based interface that simplifies configuration and monitoring. Administrators can easily manage network settings, view statistics, and troubleshoot issues without the need for extensive technical expertise.

In terms of physical specifications, the TL-ER6020 is built with reliability in mind, featuring cooling vents to prevent overheating and an efficient power supply. Its compact design allows for easy placement in various environments, whether in a server room or on a desk.

Overall, the TP-Link TL-ER6020 is a solid choice for businesses looking to build a secure, versatile, and high-performance network. Its combination of dual WAN capabilities, strong security features, VLAN support, and QoS make it a comprehensive solution for modern networking needs.
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