Principles of the PPPoE simulation feature

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Maintenance engineers simulate a user terminal on an access node to initiate a Point-to-Point Protocol over Ethernet (PPPoE) dialup process. Then the access node interacts with the broadband remote access server (BRAS). PPPoE is divided into the discovery and session stages.

PPPoE discovery stage: The source host discovers the MAC address of the destination host (in this case, the BRAS), and a point-to-point PPP session is set up.
PPPoE session stage: PPPoE session stage: A point-to-point connection is set up and carries PPP packets for link negotiation.

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Other related questions:
Whether OSN 8800 supports the pre-configuration function on the NMS
All OTN equipment including OSN 8800 does not support pre-configuration on the NMS.

Principles of HSB
The AR supports the HSB function. HSB implementation involves data synchronization and traffic switching. Data synchronization is performed to ensure consistent information on the master and backup devices when the two devices are working normally. Traffic switching is performed to ensure non-stop service forwarding when the master device fails or recovers. The principle for data synchronization is to establish active and standby channels between devices that back up each other. Session entries of the master device can be synchronized to the backup device through the channel at one time, in real time, or periodically. The principle for traffic switching is based on negotiation between the master device and the backup device using VRRP. When the master device fails, a new master device is elected based on VRRP priorities and the traffic is switched to the master device. For details, see “HSB Configuration�?in AR100&AR120&AR150&AR160&AR200&AR1200&AR2200&AR3200&AR3600 V200R008 CLI-based Configuration Guide - Reliability.

Principle of BSSID generation
Centralized BSSID management allows an AC to automatically assign a unique BSSID to each VAP. You only need to configure a carrier ID and an AC ID for an AC. Then the AC automatically assigns a BSSID to each VAP. The BSSID allows you to rapidly locate a VAP on a network. A BSSID is generated based on the AC ID, carrier ID, and WLAN ID.

OTN principles
An OTN is a network consisting of optical NEs that are connected through optical fibers. It can transmit, multiplex, route, manage, monitor, and protect client signals on optical channels. A main feature of the OTN is client independence. That is, the transmission and configuration of any digital signals are irrelevant to the features of a client. OTN has the following advantages over traditional SDH: More powerful forward error correction, Tandem connection monitoring (TCM) at more levels, transparent transmission of client signals, and scalable switching capacity.

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