The three numbers near the upper right identify (from left to right) the currently selected frame, the lowest sequence number (Num – see below) in the current buffer, and the highest sequence number in the current buffer.

Information in this Display:

●Num – a five-digit sequence number.

●Time – the time to the hundredth of a second since the first "event" in the current buffer.

●D – the data direction: I (incoming) or O (outgoing). On monitors capable of dis- playing reverse video, outgoing frames will be displayed in reverse video.

●Type – the frame type: IP , IPX , Bridge , or Unknown.

●Len – length of the frame.

●Data – source MAC address, destination MAC address, frame type, and first 76 bytes of the frame, in hex.

Note that pressing [F7] will allow specification of an event (sequence) number to be displayed, in case that number is not currently on the screen. (It must, however, be in the buffer.)

The capture buffer can hold the first 76 bytes of each packet, up to 1000 packets.

Displaying Frame Relay Backup Status

To display operational states of backup and backed-up frame relay DLCIs, press [E] at the Protocol Status Displays Menu (or [C], [F], [E] from the Main Menu), then select from the following list and enter (when prompted) the RLP/port or group number:

ADisplay States for all Backup DLCIs on a Port

BDisplay States for all Primary DLCIs on a Port

CDisplay States for all Backup DLCIs in a Group

Possible States:

●Active – The DLCI is capable of passing data.

●Backup Wait – (Primary DLCI only) The DLCI is down or undergoing IPL, but the switchover timer has not yet expired.

●Backed Up – (Primary DLCI only) The DLCI has been backed up, and data will be routed over the backup DLCI.

●Restore Wait – (Backup DLCI only) The primary DLCI is now up, but the switchback timer has not yet expired. (The state will return to Active if the Primary DLCI goes down again before the timer expires.)

●Inactive – (Backup DLCI only) The DLCI is available.

●ACK Wait/Hold – The initiating node has issued a switchover or switchback command and is waiting for an ACK (acknowledgment) from the remote node. Received data traffic will be held pending the ACK.

●ACK Wait/Discard – The ACK (see ACK Wait/Hold) has not been received within a pre-determined number of transmissions of the switchover/switchback command. Any received or held traffic will be discarded.

Status Displays

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Cabletron Systems 1800 manual Displaying Frame Relay Backup Status
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1800 specifications

Cabletron Systems, a leading player in network management and telecommunications solutions during the late 20th century, introduced several innovative products that played a crucial role in shaping enterprise networking. Among these were the Cabletron FRX6000, FRX4000, and the FRX1800, which delivered advanced features aimed at enhancing network performance, security, and scalability.

The Cabletron FRX6000 was designed as a robust multi-layer switch, ideal for large-scale enterprise environments. It supported extensive routing capabilities, allowing organizations to manage traffic efficiently even under heavy loads. The FRX6000 boasted high throughput rates and low latency, making it suitable for demanding applications. With support for various network protocols, including IP, IPX, and AppleTalk, its adaptability made it a versatile choice for diverse networking needs. Moreover, security features like VLAN support and Access Control Lists (ACLs) provided enhanced protection against potential threats.

Moving to the FRX4000, this model offered a balance between performance and cost-effectiveness. The FRX4000 maintained many of the essential features of its larger counterpart while catering to medium-sized enterprises. It provided Layer 3 routing and could handle multiple simultaneous connections, ensuring seamless communication across departments. The modular design allowed for easy upgrades, enabling businesses to expand their network infrastructure without significant overhauls. This made the FRX4000 an attractive option for organizations looking to optimize their network investments.

Lastly, the FRX1800, designed for small to medium businesses, focused on simplicity and ease of use while still incorporating powerful network management capabilities. Its user-friendly interface made it accessible for organizations lacking extensive IT resources. The FRX1800 provided essential functionalities such as Integrated Layer 2 switching and routing, network monitoring, and basic security features, ensuring that even smaller companies could maintain efficient, reliable networking without overwhelming complexity.

All three models utilized advanced technologies, including a high bandwidth backbone and state-of-the-art switching architecture, to enable fast and reliable data transfer. They also supported Quality of Service (QoS) mechanisms, allowing businesses to prioritize critical applications and ensure consistent performance across the network.

In summary, the Cabletron FRX6000, FRX4000, and FRX1800 were pivotal in enhancing network capabilities, providing organizations with scalable, secure, and high-performance options tailored to their specific needs.
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