01 = RIP Version 1 = must be zero

00 00

14 = Time To Live (14 seconds/hops)

11 = Protocol (hex 11 is 17 UDP, hex 01 is 01 ICMP, hex 06 is 06 TCP, etc…) 9E 65 = IP header checksum

02 02 02 02 = IP source address

02 02 02 01 = IP destination address

0208 = UDP source port (520)

0208 = UDP destination port (520)

0020 = UDP length (20 hex is 32 decimal) EE93 = UDP header checksum

02 = RIP Command byte (Response)

03000000 = IP address (reporting route to network 3.0.0.0 )

00000000 = must be zero

00000000 = Metric (hops 1-15; note that 16 is unreachable)

ARP (bridged IP) Request packet traced on DLCI 16:

0016 (0076) 0300800080C20007FFFFFFFFFFFF0080C7193D800036AAAA03 0000F8080600010800060400010080C7193D80C6554ABC0000 00000000C6554A015F4C5445585400000400000000000000A029

03 = Q.922 control byte

00 = Pad byte

80 = SNAP NLPID for a bridged 802.3 frame

0080C2 = OUI

0007 = PID

FFFFFFFFFFFF= Destination MAC address

0080C7193D80 = Source MAC address

0036 = length of packet in hex (54 bytes follow) AAAA03 = SNAP Header

0000F8 = Protocol ID (SNAP OUI will see 000000 or 00000C)

0806 = Ethertype (ARP)

0001 = Hardware (Ethernet 10MB)

0800 = Protocol = Ethertype (DOD-IP)

06 = Hardware address length

04 = Protocol address length

0001 = Op Code (1 = ARP request, 2 = ARP reply, 3 = RARP request, 4 = RARP reply)

0080C7193D80 = Sender's hardware address (MAC address) C6554ABC = Sender's protocol address (IP address) 000000000000 = Target hardware address (MAC address) C6554A01 = Target protocol address (IP address)

The rest is Ethernet padding.

20-16

SmartSwitch 1800 4. 0 User Guide, Rev 01

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.

Cabletron Systems 1800 manual 01 = RIP Version 1 = must be zero

Models: 1800