Chinese name: CiscoSwitch mbth: Cisco switch overview, classification, naming, model description, frequently asked questions, low-end products,1900,2900, mid-end products, management features, gigabit features, C3500 series, high-end products, Catalyst 6000 series, with high connection port density, high speed, multi-layer switching and good fault tolerance. Rich software functions, overview and classification Cisco's switch products take "Catalyst" as the trademark, including 1900, 2800, 2900, 3500, 4000, 5000, 5500, 6000, 8500 and more than ten series. One is fixed configuration switch, including most models of 3500 and below. For example, 1924 is a 24-port 100 M Ethernet switch with two 100M uplink ports. Except for limited software upgrades, these switches cannot be expanded; The other is modular switch, which mainly refers to the models of 4000 and above. Network designers can choose different numbers and models of interface boards, power modules and corresponding software according to network requirements. When naming and selecting equipment, many people have a headache for lengthy product models. In fact, Cisco has certain rules for naming products. As far as Catalyst switches are concerned, the product naming format is as follows: Catalyst NN XX [-C] [-M] [-A/-EN], where NN is the serial number of the switch, XX is the number of connection ports of the fixed configuration switch, and the number of slots of the modular switch, where -C symbol indicates that it has an optical fiber interface, -M indicates modularization, and -A and -EN respectively refer to the switch software. The name of the model introduction switch is generally fixed at the beginning of WS, and then there are two letters, one is C and the other is X. C stands for solidified switch or chassis, and X stands for module. For example, when we see the model WS-C3750-24TS-S, we should know that it is a CISCO switch. Solidification switch 3750 series has 24 Ethernet ports, ts means Ethernet port +S in the back +SFP port means standard version, and the corresponding model is E, which belongs to enhanced version or enterprise version. Another example is WS-X6748-SFP, where WS stands for switching equipment, X stands for module, 6 stands for 6000 series, 7 stands for 7th generation products, and 48 stands for 48 ports. SFP stands for connection port type (SFP is a micro interface module). Cisco S2309TP-EI switch has the following series: 1900 series: 1924 2900 series: 2924, 2924M 2950 series: 2950-24, 2950G-24/48. 2950T-24, 2950SX-24/48 2960 series: 2960-24/48TT-L, 296024/48TC-L 3500 series: 3508G, 3524, 3548 3550 series: 3550-24-SMI/ T 3560 series: 3560-24/48 and 3750 series are G: 3750-24/48-TS-S, 3750-24/48-TS-E 3750g-24/48-TS-S, 3750g-24/48-S. Answer: Catalyst 2948G-L3, Catalyst 4908G-L3, Catalyst 4003, Catalyst 4006, Catalyst 5000 series, Catalyst 6000 series and Catalyst 6500 series. Cisco Switches FAQ Can Catalyst 2948G be stacked with Catalyst 3500XL and GigaStack GBIC? Answer: No, the structure of Catalyst 2948G is different from that of Catalyst 3500XL. Catalyst 2948G does not support GigaStack GBIC module, so it cannot be stacked. Cisco Switch FAQ 3: What is the Layer 3 packet forwarding rate of 3:Catalyst 2948g-L3, 4000 and 6000? Answer: Catalyst 2948g-L3:11mpps; catalyst 4000:6 mpps； Catalyst 6000/6500: 15Mpps to 150Mpps. Cisco Switches Frequently Asked Questions What is the maximum diameter of the largest link of the Catalyst switch? A: Yes, usually the maximum connection diameter of a switch is 7. If it exceeds this number, it will cause instability in spanning tree calculation. Therefore, when the connection diameter is close to or equal to 7, star network topology should be adopted as far as possible. Cisco Switches Frequently Asked Questions Does catalyst 4000 support ISL? A: catalyst 4000 does not support ISL, but supports 802.1q. Cisco Switch FAQ 6: How to judge your switch engine model? A: Use the command SHOW VERSION to see the model of the line card: WS-X5xxx = SupI (1st generation) WS-X55xx = SupII (2nd generation) WS-X553x = SupIII (3rd generation) From a physical point of view: the first generation engine has a special reset key, and there is no PCMCIA slot. Second generation engine-reset key, active status light, no PCMCIA. Third generation engine-with PCMCIA slot and connection port to a higher level. Cisco Switch FAQ 7: What are MSM, NFFC, MSFC and PFC in the switch and what are their functions? Answer: MSM (Multi-layer Switching Module) is a three-layer routing card used on the 6000, and NFFC, the three-layer forwarding capability of 6Mpps, is a super engine of the 5000 series. 3.x has added functions such as IP MLS, IGMP and three-layer filtering. The Layer 3 routing daughter card of the super engine on MSFC 6000 provides L3 forwarding capability of IP and IPX messages of 15Mpps, and can provide IP multicast capability together with PFC card. PFC card is used to provide switches with some three-layer functions, such as VLAN access list control and QOS access list. And you don't need MSFC to install PFC card, but you must install PFC when installing MSFC. Cisco Switch FAQ Does the upstream module WS-U5534-GESX/WS-U5536-GELX of Engine III on Catalyst 5000 need GBIC? Answer: No, these two modules are not Gigabit modules of GBIC, but only connected with optical fiber jumpers. Cisco Switches Frequently Asked Questions How does the uplink module of Catalyst 5000 appear in the configuration tool? A: You need to select the corresponding engine and complete the update or check before the corresponding upload module will appear. Cisco Switch FAQ 10: How to use WS-X4232-RJ-XX module and WS-U4504-FX-MT module on Catalyst 4003/4006? A: WS-U4504-FX-MT is a daughter card on WS-X4232-RJ-XX. Low-end products Let's talk about low-end products first. 1900 and 2900 are typical low-end products. In fact, in the low-end switch market, Cisco has no special advantage, because the products of companies such as 3Com and Dlink have better cost performance. 1900 switch is suitable for desktop computer access at the end of the network and is a typical low-end product. Provide 12 or 24 10M connection ports and 2 100M connection ports, in which 100M connection port supports full duplex communication and can provide connection port bandwidth up to 200Mbps. The bandwidth of the machine backplane is 320Mbps. 1900 with enterprise software also supports VLAN and ISL trunking, with a maximum of 4 VLANs, but generally speaking, low-end products have low requirements for this function. 1900 Some models 1900 have 100BaseFX optical fiber interface. For example, C 19 12C, C 1924C has a 100 megabit Tx port and a 100 megabit Fx port, and C 1924F has two 100BaseFX ports. The main models of 1900 series are as follows: c 1 912: 10ba setx, 2 ports 100BaseTx, 1 AUI port c19/kloc-0. Its backplane speed is as high as 3.2G, and there are at most 24 10/ 100M adaptive connection ports. All connection ports support full duplex communication, which greatly improves the speed of desktop access. In addition to the speed of connecting ports, many other performances of 2900 are obviously improved compared with 1900 series. For example, the MAC address table capacity of 2900 is 16K, which can be divided into 1024 VLAN, supporting ISL relay protocol and so on. The product line of 2900-2900 series is very long. Some of them are common 10/ 100BaseTx switches, such as C29 12, C2924, etc. Some have optical fiber interfaces, for example, C 2924C has two 100BaseFx ports; Some are modular, such as C 2924M with two expansion slots. The expansion slot card can accommodate 100BaseTx module, 100ba setx module, and even insert ATM module and Gigabit Ethernet interface card (GBIC). Details are as follows: C29 12-XL: 12 port100 basetx adaptive C 2924C -XL: 2 expansion slots, 12 port100basetxc2c2c. It uses the same software as Catalyst 5000/5500. It has 48 10/ 100Mbps adaptive Ethernet connection ports and 2 gigabit Ethernet connection ports, 24G backplane bandwidth, hot-swappable redundant power supply and a series of fault-tolerant functions and network management functions. C 2948G -L3 increases the ability of three-layer switching on the basis of C 2948G, and the maximum throughput of three-layer packets can reach 10Mpps. But generally speaking, 2900 series switches are generally used at the low end of the network, and gigabit and routing ability are not very important, so two 2948s are not used much in practical projects. Mid-range products come to mid-range products. The 3500 series of mid-range products are widely used and very representative. The basic features of C3500 series switches include backplane bandwidth up to 10Gbps, forwarding rate of 7.5Mpps, support for 250 VLAN, support for IEEE 802. 1Q and ISL trunking, support for CGMP/ Gigabit Ethernet switches, and optional redundant power supply. However, the biggest feature of C3500 is management and gigabit. In terms of management characteristics, C3500 realizes Cisco's switching cluster technology, which can interconnect 16 C3500, C2900 and C 1900 series switches and manage them through an IP address. Cisco Visual Switch Manager (CVSM) software in C3500 can also be used to set up and manage switches conveniently through a browser. Gigabit function: C3500 fully supports Gigabit interface card (GBIC). At present, there are three kinds of GBIC suitable for multimode fiber, 1000BaseSx, with the longest distance of 550m 1000BaseLX/LH, and it is suitable for multimode/single-mode fiber, with the longest distance of10km; 1000BaseZX is suitable for single-mode optical fiber, and the longest distance is 100km. There are four models of C3500 in C3500 series: Catalyst 3508g XL: 8-port GBIC slot Catalyst 3512xl:12-port 10/ 100M adaptive. 2-port GBIC slot Catalyst 3524 XL: 24-port 10/ 100M adaptive, 2-port GBIC slot Catalyst 3548 XL: 48-port10/00m adaptive, 2-port GBIC slot high-end products. Finally, launch high-end products. For enterprise data networks, the C6000 series has replaced the original C5000 series, which is the most commonly used product. Catalyst 6000 series switches provide high-performance, multi-layer switching solutions for campus networks. They are specially designed for application environments that require gigabit expansion, high availability and multi-layer switching, and are mainly used for campus backbone connections and other occasions. Catalyst 6000 Series Catalyst 6000 Series consists of two types of switches, Catalyst 6000 and Catalyst 6500, both of which contain six or nine slot models, namely 6006, 6009, 6506 and 6509, of which 6509 is the most widely used. All models support the same super engine and the same interface module, which protects the investment of users. The connection port density supports at most 384 10/ 100BaseTx adaptive Ethernet ports, 192 100ba setx fiber fast Ethernet ports and 130 Gigabit Ethernet connection ports (GBIC slots). The fast C6500 switching backplane can be extended to 256 Gbps, and the multi-layer switching speed can be extended to 150 Mpps. The switching backplane bandwidth of C6000 is 32 Gbps, and the multi-layer switching rate is 30 Mpps. Using Fast Ethernet Channel (FEC or Gigabit Ethernet Channel (GEC), the connection port rate of 16 Gbps can be logically realized, and up to 8 Fast/Gigabit Ethernet ports can be connected, or it can be aggregated across modules. Multilayer switching C6000 series multilayer switching modules can perform line-rate IP, IPX and IP multicast routing. The fault-tolerant C6000 series has redundant super engine, redundant load balancing power supply, redundant fan, redundant system clock, redundant uplink and redundant switching backplane (only applicable to C6500 series), which realizes the high availability of the system. Rich software functions C6000 software supports a variety of protocols, including NetFlow, VTP(VLAN Trunking Protocol), VQP(VLAN Query Protocol), ISL Trunking, HSRP (Hot Standby Router Protocol), Port Security, TACACS, CGMP (Cisco Group Management Protocol), IGMP, etc.