repeated between UP and DOWN.
Not suitable for STP Spanning Tree Protocol. In the face of users, the access layer switch has too many policy restrictions, such as VLAN. Generally, the access layer switch is bound to the aggregation layer with port 100 of Port 2 as the
/100 Mpbs adaptive ports and 1 Gigabit expansion slot. You can purchase different types of Gigabit modules provided by youkang to achieve the function of connecting to a gigabit network. The UGS-7324RS has 15 Gbps non-blocking back-board bandwidth, in the layer-2 switch, the packet forwarding rate reaches the line speed value of Fast Ethernet; As a
can be said that it is a combination of the advantages of layer-3 routing and layer-2 switching.
Three-tier switch features of Internet cafes:
1. Improve Security
In Internet cafes, for the sake of security, data packets must be filtered according to many rules to ensure that only compliant data packets can pass throu
In a star wide area network topology that is centered at one end and connected to hundreds of nodes through digital channels, if you use the traditional network connection mode, the limited processing capability and high availability of network devices are two major factors restricting technical solutions. With the launch of a new generation of broadband access technology and equipment, new network connection solutions are also coming soon.
The new network access solution is to use the core
performance is built on an intelligent storage system. The layer-3 Switch directly associates a portion of the memory with the forwarding engine. More interface modules are added, including their respective forwarding engines, and memory is also expanded accordingly. It also uses streamlined ASIC processing to dynamically construct the cache, which increases the
five stages of STP: blocking, listening, learning, forwarding, and failure. The entire process takes 15 seconds. Therefore, if you are sure what you want to connect to, you can terminate this process.
Test the Ethernet Channel Configuration
The next step is to test the Ethernet channel, which is bound with the layer-3
H3C layer-3 Switch configuration: analyzes VLAN code instances. Currently, there are a lot of people using layer-3 switches, and maintenance of switches has become a problem that cannot be ignored. Only the three-tier switch is co
policies, you can avoid these problems.
In addition, the layer-3 switch does not support the complete routing protocol yet, while the router is capable of simultaneously processing multiple protocols. When a network is connected to different protocols, such as a combination of Ethernet and card rings, it is impossible
China 3 layer Switch VLAN isolation192.168.1.0---------g1/0/1 S SW g1/0/2-------192.168.2.0192.168.3.0-----------------------|192.168.4.0-----------------------|Prohibition of 1.0, 3.0, 4.0 and 2.0 visits[H3c]acl Num 3000[H3c-acl-adv-3000]rule deny IP source 192.168.1.0 0.0.0.255 destination 192.168.2.0 0.0.0.255//Forbidden 1.0 Access 2.0[H3c-acl-adv-3000]rule de
Basic Features: This article introduces the layer-3 Switch Technology for exact matching and query. It is very complicated for many people to discuss the technology of layer-3 switches interconnected between companies or large network connections of the company, this is conf
effectively protects its own security and reliability. At this time, layer-3 switches have become "smart multi-layer switches", which are mainly equipped with the above control functions. The switch chip can process more than 64 bytes of content at a time, so it can directly process the MAC address headers, IP address
Enable // enter private Mode
Configure terminal // enter global Mode
Service password-encryption // encrypt the password
Hostname Catalyst 3550-12T1 // define the name for the layer-3 Switch
Enable password 123456. // enable password
Enable secret 654321 // The encryption password of enable (it should be garbled, not 654321)
Ip subnet-zero // allow all 0 subnets
multi-layer switches", which are mainly equipped with the above control functions. The switch chip can process more than 64 bytes of content at a time, so it can directly process the MAC address headers, IP address headers, and TCP/UDP headers of Ethernet frames at a time, thus achieving 2 ~ Layer-4 hardware line rate
With the rapid development of China's exchange industry, it also promotes the upgrade of the Third-layer switch technology. Here we mainly analyze the technical trend of the low-end third-layer switch. In the switch market, layer-
exchange router and the layer-3 Switch in Packet Exchange operations. Generally, a vro performs Packet Exchange Based on a microprocessor, while a layer-3 Switch performs Packet Exchange through hardware. Therefore, compared with
interconnection of subnets in the same LAN can be replaced by a layer-3 switch, but the lan must be interconnected with the public network to achieve a cross-regional network, then the router is indispensable. A network fully built on a vswitch may have problems such as collision, congestion, and communication confusion. Vrouters are used to divide networks into
modern Switching Matrix module is distributed. As the volume of audio, video, and data running on the enterprise intranet is growing, the requirements for switch processing capabilities are also increasing. In order to achieve high-speed and non-blocking switching under high port density conditions, it is wise to adopt a distributed layer-3
above control functions, while effectively controlling user services, it also effectively protects its own security and reliability. At this time, layer-3 switches have become "smart multi-layer switches", which are mainly equipped with the above control functions. The switch chip can process more than 64 bytes of con
above control functions. The switch chip can process more than 64 bytes of content at a time, so it can directly process the MAC address headers, IP address headers, and TCP/UDP headers of Ethernet frames at a time, thus achieving 2 ~ Layer-4 hardware line rate Access Control. There are also some smart control functions such as 802.1X authentication protocol sup
effectively controlling user services, it also effectively protects its own security and reliability. At this time, layer-3 switches have become "smart multi-layer switches", which are mainly equipped with the above control functions. The switch chip can process more than 64 bytes of content at a time, so it can direc
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