What is the strength of a Cisco switch?

Source: Internet
Author: User
Tags cisco switch

The Cisco switch can transmit data between multiple port pairs at the same time. By establishing a temporary exchange path between the initiator of the data frame and the Target receiver, the data frame can directly reach the destination address from the source address.

Cisco switches are trademarks of "Catalyst" and contain more than 10 series including 1900, 2800, 2900, 3500, 4000, 5000, 5500, and 6000. In general, these switches can be divided into two categories: one is a fixed configuration switch.

Including most models of 3500 and below, for example, 1924 is a 24-port 10 Mbps Ethernet switch, with two 100Mbps upstream ports. In addition to limited software upgrades, these switches cannot be expanded. The other type is modular switches, which mainly refer to 4000 or more models. network designers can meet network requirements, select different numbers and models of interface boards, power supply modules, and corresponding software.

When choosing a device, many people have a headache for long product models. In fact, Cisco has a rule for product naming. For A Catalyst switch, the product name is in the following format: Catalyst NNXX [-C] [-M] [-A/-EN] where NN is the serial number of the Cisco switch.

XX indicates the number of ports for fixed-configuration switches and the number of slots for modular Cisco switches. The-C mark indicates the interface with optical fiber, and the-M indicates modularization, -A and-EN respectively refer to the switch software as the standard board or Enterprise Edition. Currently.

Common Cisco switches in network integration projects include the following series: 1900/2900 series, 3500 series, and 6500 series. They are used at the low end, middle end, and high end of the network respectively. The following describes the products of these series:

1. Low-end products

Let's talk about low-end products. 1900 and 2900 are typical low-end products. In fact, Cisco does not take a special advantage in the low-end switch market, because 3Com, Dlink and other companies have better performance and price ratios, and the 1900 switch is suitable for desktop computer access at the end of the network.

Is a typical low-end product. It provides 12 or 24 10 Mbps ports and 2 Mbps ports, of which Mbps ports support full-duplex communication and can provide port bandwidth up to Mbps. The server's backboard bandwidth is 320 Mbps. 1900 with Enterprise Edition Software also supports VLAN and ISL Trunking.

A maximum of four VLANs are allowed. However, low-end products generally do not require this function. Some models of the 1900 with 100BaseFX optical fiber interface. For example, C1912C and C1924C have a MB Tx port and a MB Fx port, and C1924F has two 100BaseFX interfaces. The main models of the 1900 Series are as follows:

◆ C1912: 12 ports: 10 BaseTx, 2 ports: 100 BaseTx, and 1 AUI Port

◆ C1912C: 12 ports: 10 BaseTx, 1 port: 100 BaseTx, 1 AUI port, and 1 100BaseFx Port

◆ C1924: 24 ports: 10 BaseTx, 2 ports: 100 BaseTx, and 1 AUI Port

◆ C1924C: 24 ports: 10 BaseTx, 1 port: 100 BaseTx, 1 AUI port, and 1 100BaseFx Port

◆ C1924F: 24 ports: 10 BaseTx, 1 AUI port, and 1 100BaseFx Port

If some desktop computers in your network are 2900 Mbps, the series may be more suitable. Compared with 1900, 2900 is characterized by an increase in speed. Its backplane speed is up to 3.2 GB, and a maximum of 24 10/100 Mbps adaptive ports.

All ports support full-duplex communication, greatly improving the desktop access speed. In addition to the port speed, many other performance of 2900 has also significantly improved compared with the 1900 Series. For example, 2900 of the MAC address table capacity is 16 KB, 1024 VLANs can be divided, and ISL Trunking Protocol is supported.

The product line of the 2900 series is very long. Some are common 10/100 BaseTx switches, such as C2912 and C2924, some are with Optical Fiber interfaces, such as C2924C with two 100BaseFx ports, and some are modular, such as C2924M with two expansion slots. The plug-in card of the expansion slot can be placed in the 100BaseTx module and 100baseFx module, or even the ATM module and Gigabit Ethernet Interface Card (GBIC ). The details are as follows:

  • Interpreting the daily use of TMIS smart Switches
  • Describes the network efficiency of symmetric switches.
  • Comprehensive Analysis of vswitch System Problems
  • See the core mechanism of 10-Gigabit Ethernet Switches
  • Describes the new performance of 10-ge switches.

In the 2900 series, there are two products more unique, one is C2948G, two is the C2948G-L3. The cost-performance ratio of 2948G is good. It uses the same software as the Catalyst 5000/5500, with 48 10/100 Mbps adaptive Ethernet ports and 2 Gigabit Ethernet ports.

24g backboard bandwidth, with hot swappable redundant power supply, has a series of fault tolerance features and network management features. On the basis of C2948G, The C2948G-L3 adds the three-layer switching capability, and the maximum three-layer packet throughput can reach 10 Mpps. However, in general, the 2900 series switches are generally used at the low end of the network. The gigabit and routing capabilities are not very important, so the two 2948 switches are not used much in actual projects.

Contact Us

The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion; products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the content of the page makes you feel confusing, please write us an email, we will handle the problem within 5 days after receiving your email.

If you find any instances of plagiarism from the community, please send an email to: info-contact@alibabacloud.com and provide relevant evidence. A staff member will contact you within 5 working days.

A Free Trial That Lets You Build Big!

Start building with 50+ products and up to 12 months usage for Elastic Compute Service

  • Sales Support

    1 on 1 presale consultation

  • After-Sales Support

    24/7 Technical Support 6 Free Tickets per Quarter Faster Response

  • Alibaba Cloud offers highly flexible support services tailored to meet your exact needs.