cisco 40gb ethernet switch

The maximum rate of Ethernet switch stack is faster, Which is multiple times faster than the port rate of the switch. Not all switches support Ethernet switch stack, when the number of ports that a single switch can provide is ins

From the data, we can see that the bandwidth of the Ethernet switch stack is dozens of times the speed of the switch port, which can effectively improve the network performance, when the number of ports that a single switch can provide is insufficient to meet the requirements of the network computer, more than two swit

Three-dimensional out of the new At present, more and more manufacturers to enter the Ethernet market, new brands and new products continue to emerge, it seems that there has been a trend of homogenization of competition. However, it is worth mentioning that the Ethernet switch in the market number of expansion, while the quality requirements are also constantly

An instance of VLAN configuration for Cisco L3 switches and L2 SwitchesCisco VLAN implementation is usually port-centric. The port connected to the node determines the VLAN in which it resides. There are two ways to allocate a port to a VLAN: Static and Dynamic. The process of creating a static VLAN is to forcibly allocate the port to a VLAN. That is, we first create a VLAN on The VTP (VLAN Trunking Protocol) server, and then assign each port to the c

hardware in the hardware or network management system. For example, the equipment vendor hardware a management software set and then put it in an Ethernet switch and router, or put it on the backbone devices of other network systems, devices in this network can be called network management devices. Network management not only manages network devices, but also monitors and manages network data streams. Beca

Exchange Technology. Different vendors have different practices, such: ATM Forum MPOA, 3Com Fast IP, Cisco Tag Switch, Ascend IP Navigator, and so on, of course, there is also a great development potential of MPLS.Some layer-3 switches have the ability to identify layer-4 protocol ports, which are called layer-4 switches. Basically, the layer-4 Exchange is actually a layer-3 exchange, but there are some va

Technical standards for VLANs IEEE 802.1Q was formally promulgated by IEEE Commissioners in June 1999, and the earliest Vlna technology was proposed by Cisco (Cisco) companies in 1996. With the development of the past few years, VLAN technology has been widely used in large and small enterprise networks, becoming the most popular Ethernet LAN technology at presen

Layer-3 Ethernet switch: introduces L2 VLAN forwarding, configurations in layer-3 Ethernet switches, MAC addresses, and L2 VLAN forwarding, I hope you will have a clear understanding after reading the following articles. The forwarding mechanism of a layer-3 Ethernet switch

When the number of ports that a single switch can provide is insufficient to meet the requirements of the network computer, more than two switches must provide the corresponding number of ports, which also involves the connection between switches. Basically, there are two ways to connect vswitches: Stack and cascade. 1. GBIC and SFP 1) GBIC Cisco GBICGigaStack Gigabit Interface Converter) is a common and lo

The most important function of a vswitch is to speed up the fast data forwarding in a large local area network. The routing function is also used for this purpose, so the switch port issue is also very important, it is really not easy to set a vswitch port. In an Ethernet Switching environment, communication between two workstations is usually not intercepted by a third party. In some cases, we may need suc

trunk allowed VLAN-A-line (VLAN 1 2 3 only allowed on this trunk link, this is VLAN pruning. )SWA (config-if) #switchport trunk encap dot1q (can not dot1q is VLAN trunking Protocol (802.1Q) general switches are self-bringing)SWA (config-if) #endSwa#sh RunSWB (config) #intf0/1SWB (config-if) #switchport mode trunkSWB (config-if) #switchport trunk allowed VLANSWB (config-if) #switchport trunk encap dot1qSWB (config-if) #endSwb#sh Run26. Cisco ModelsCis