Appendix B: Log Messages

No IP addr for peer level 2

The Express XL/XLT cannot continue the connection because there was no IP address received from the PPP peer or it was not set in Configuration/Con- nection List/IP/Route/IP/Net parameter.

No more bundles avail level 3

The Express XL/XLT cannot bundle more than two Multilink sessions at one time.

No Response from peer level 2

The Express XL/XLT has dialed or answered a call and no PPP negotiation packets were seen.

PAP authen failed level 3

The PPP peer has rejected the Express XL/XLT’s username and/or password used for authenticating. Check to make sure the Configuration/Connection List/Authentication parameters Tx Method, Tx Username, and Tx Password are correct.

Peer failed CHAP authen level 3

The PPP peer’s reported CHAP username and/or password does not match the Express XL/XLT’s parameters. This is most likely caused by PPP peer sending an incorrect username and/or password. Make sure the Configura- tion/Connection List/Authentication parameters Rx Username and Rx Pass- word are correctly entered. Also, if using RADIUS, check that the server is configured and running properly.

Peer failed EAP authen level 3

The PPP peer’s reported EAP username and/or password does not match the Express XL/XLT’s parameters. This is most likely caused by PPP peer sending incorrect username and/or password. Make sure the Configuration/Connec- tion List/Authentication parameters Rx Username and Rx Password are cor- rectly entered. Also, if using RADIUS, check that the server is configured and running properly.

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Express XLT, Express XL specifications

ADTRAN has established itself as a leading provider of telecommunications solutions, and among its impressive lineup, the ADTRAN Express XL and Express XLT stand out as robust offerings designed for the evolving demands of modern networks. These devices cater to service providers and enterprises looking to enhance their broadband delivery capabilities while ensuring cost-efficiency and reliability.

The ADTRAN Express XL is a high-capacity, next-generation fiber optic access platform. It is engineered to support a wide array of technologies, including Passive Optical Network (PON) standards such as GPON and XGSPON. The Express XL's architecture allows for seamless scalability, making it a perfect fit for both small-scale deployments and expansive network rollouts. What sets it apart is its ability to deliver ultra-fast broadband services to residential, business, and mobile backhaul customers with its impressive throughput capabilities.

On the other hand, the Express XLT builds upon the success of the Express XL by incorporating advanced features aimed at maximizing operational efficiency. It supports technologies including Active Ethernet and offers flexible network configurations to meet specific service requirements. Both models utilize ADTRAN’s innovative Dynamic Bandwidth Allocation technology, which dynamically allocates bandwidth to users based on real-time demand, ensuring optimal performance and user satisfaction.

A key characteristic of both ADTRAN Express XL and XLT is their energy efficiency. Designed to minimize operational costs, these units use power-saving technologies that reduce energy consumption without compromising performance. Furthermore, they include built-in support for network functions virtualization (NFV) and software-defined networking (SDN), providing operators with the agility to adapt their networks in response to changing market conditions.

In addition to their advanced technological underpinnings, the Express XL and XLT boast an intuitive management interface, simplifying network monitoring and management tasks. They also feature comprehensive telemetry and analytics capabilities that help operators gain insights into network performance, optimize configurations, and troubleshoot potential issues before they affect end users.

Ultimately, the ADTRAN Express XL and Express XLT are pivotal components for service providers aiming to deliver high-speed broadband services effectively. With their blend of flexibility, scalability, and energy efficiency, these access platforms are well-positioned to meet the current and future demands of telecommunications networks worldwide.