Bridging

Table 4-1. SONET/SDH Transmission Hierarchies

SONET

Bit Rate

SDH

 

STS-1/OC-1

51.84 Mbps

Ñ

 

 

 

 

 

STS-3/OC-3 (supports

155.52 Mbps

STM-1 (supports

 

FE-100Sx and APIM-2x

 

FE-100Sx and APIM-2x

 

in SONET operational

 

in SDH operational

 

mode)

 

mode)

 

 

 

 

 

STS-12/OC-12

622.08 Mbps

STM-4

 

 

 

 

 

STS-24/OC-24

1244.16 Mbps

Ñ

 

 

 

 

 

STS-48/OC-48

2588.32 Mbps

STM-16

 

 

 

 

 

STS-192/OC-192

9953.28 Mbps

STM-64

 

 

 

 

You should be sure that the operational mode for both the local and remote ends of the SONET connection is set appropriately for your region. Setting the wrong operational mode may cause errors to be generated during transmission, since there are slight differences in framing SONET and SDH signals.

To access the SONET/SDH ConÞguration window

from the Bridge Status window:

1.Click on the desired Port button () to display the port menu.

2.Drag down to select SONET/SDH Configuration…. The SONET/SDH Configuration: Port X window,Figure 4-23, will appear.

from the Chassis View window:

1.Click on the appropriate port index to access the Port menu.

2.Drag down to select SONET/SDH Configuration…. The SONET/SDH Configuration: Port X window,Figure 4-23, will appear.

Figure 4-23. SONET/SDH ConÞguration Window

SONET Port Configuration

4-75

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Image 121
Cabletron Systems CSX200, CSX400 manual Sonet

CSX200, CSX400 specifications

Cabletron Systems was a leading developer of networking solutions, and its CSX400 and CSX200 series of high-performance switches represent some of the key innovations in the field of enterprise networking during their time. Both models were geared towards enhancing network reliability, efficiency, and speed, particularly in environments where heavy data traffic and complex networking demands were prevalent.

The CSX400, designed for larger enterprises, boasts a robust architecture capable of handling significant throughput. One of its standout features is its stackable design, allowing multiple switches to be interconnected and managed seamlessly as a single unit. This scalability provides organizations with the flexibility to expand their networks without significant infrastructure overhauls. The CSX400 supports various Ethernet standards, including 10/100 Ethernet and Gigabit Ethernet, positioning it to effectively manage both legacy and modern networking requirements.

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On the other hand, the CSX200 series is tailored for smaller enterprises or branch offices needing a reliable yet efficient networking solution. Despite its compact design, the CSX200 is equipped with essential features that promote effective network management and security. It offers a simplified management interface, making it user-friendly for network administrators. The switch also provides essential access control measures, employing technologies like IEEE 802.1X for network access security.

Both the CSX400 and CSX200 prioritize performance through the incorporation of advanced switching technologies. They support features such as Spanning Tree Protocol (STP), enabling loop-free topologies and enhanced network resilience. These attributes are particularly crucial in dynamic networking environments where downtime can have significant repercussions on business operations.

Overall, Cabletron Systems' CSX400 and CSX200 series represent a blend of scalability, advanced routing capabilities, and user-friendly management, making them vital assets for organizations looking to optimize their network infrastructure during a period of rapid technological evolution. With their rich feature sets and unwavering performance, these switches helped pave the way for modern networking solutions that cater to diverse enterprise needs.