With the development of China's routing industry, we have also promoted the update and upgrade of the routing switch technology. Here we have introduced the IOS restoration method of the Cisco routing switch, and we have tried one method, after Flash is deleted, the system cannot be started. You can use X-Modem to restore it. At that time, I accidentally deleted
, and the slot number is different)
Iii. Stack instances:
1: The stacked cables are physically connected. The connection method is master stack1, which is connected to slave stack2.
2: enable the master without any configuration. .
3: Server Load balancer is enabled.
4: No configuration is required. Line plug, automatic stacking election upon startup, master is highlighted)
Note: You can also configure stacks first, such as IP addresses and priorities.
4. Check the current stack status:
Show pla
Cisco 3550 switch stp learning notes STP (Spanning Tree Protocol) (IEEE 802.1D) Spanning Tree Protocol-review the working principles of SW: 1. the frame it forwards cannot be modified. create a MAC-PORT ing table based on source MAC learning. forward the frames in the target MAC ing table directly from the corresponding port. for frames without target MAC ing/Target wide (Group) broadcasting, SW learns diff
One outlet had poor contact. Because there was no wiring module, I just fixed the wiring block and the network was ready for use. After a week, the network was broken again and I asked another colleague to change the wiring module, as a result, my colleague told me that changing the wiring module would not work, and the network would still be disconnected. I thought it was strange. I told him that the Network was originally accessible, but the wiring module was not good.
I will remove the wiring
CISCO 3750 Dual Switch stack operation, cisco3750 dual
Double switch stack operation
I. Basic Requirements:
The ios version must be consistent with the dedicated stack module and stack cable, and the maximum number of stacks is 9.
Ii. Stack advantages:
High-density ports, easy to manage, and stacked switches can be reg
message are correctIf a large number of messages are sent, the network bandwidth will be exhausted to form another Denial-of-Service attack.3. The client can specify the IP address at will.The client does not have to use the DHCP service. It can set IP addresses in a static way. If any,This will greatly increase the possibility of network IP address conflict.II. Introduction to DHCP Snooping TechnologyDHCP Snooping is a DHCP security feature. Cisco s
the ports of the corresponding vswitch as required in table 1. To verify our configuration, you can use the show vlan command in privileged mode to display the configuration you just made and check whether it is correct.
The above describes the VLAN configuration of the Cisco Catalyst 1900 switch. The VLAN configuration methods of other switches are similar. Ref
relay mode on the port connecting a switch to a vswitch or connecting a vswitch to a vro, this enables data frames belonging to different VLANs to be transmitted through this relay link.
The frame format of VLAN relay is divided into two types: ISL (Inter-Switch Link, connection between switches) and 802.1Q. The former is the protocol unique to the Cisco
domain COM settings vtp admin domain name com
PAR2 (VLAN) #vtp client to set the switch to clients mode
Par3#vlan database into VLAN configuration mode
PAR3 (VLAN) #vtp domain COM settings vtp admin domain name com
PAR3 (VLAN) #vtp client to set the switch to clients mode
Note: Setting the switch to server mode is to allow the creation, modification, deleti
I will talk about two tips, one about monitoring switch port traffic and the other about store value.
1. Monitor switch port traffic
Switch monitoring document in the production environment on the Internet. Therefore, it is complete, and a key knowledge is interspersed in the middle. Zabbix is still innocent .!!! In this demonstration, I used the production envir
Cisco switch Product Name Description Catalyst nn xx [-C] [-M] [-A/-EN] NN is the serial number of the switch XX for A fixed configuration switch is the number of ports, for A modular switch, the number of slots C indicates that t
Calculate the bandwidth of the backboard of a Cisco switch. It is the maximum amount of data that can be transferred between the vswitch interface processor, interface card, and data bus. The higher the bandwidth of the backboard of A vswitch, the stronger the ability to process data, but the design cost will also rise. Www.2cto.com but how can we check whether the bandwidth of A vswitch is sufficient? Obvi
Cisco 3750 switch stack configuration points 3750 stack is a real stack, the Catalyst 3550 series uses StackWise technology, it is an innovative stack architecture, A 32 Gbps stack interconnection is provided to connect up to nine switches and integrate them into a unified, logical, and optimized device for convergence, in this way, customers can deploy voice, video, and data applications with greater confi
The IT Certification Examination Resources Network has collected a number of training materials for Cisco agents, including answers to pre-sales questions concerning routers, switches, IP/TV, firewalls, VPNs, network management, HFCs, VOIP, and equipment procurement., it can also be used as an entry-level document.12. Question: Which switches Does Cisco currently support layer-3 switching?Answer: Catalyst 2
We have explained a lot about the configurations of CISCO switches. Here we will mainly explain the port security configurations of CISCO 3550 switches. Scenario: There is a CISCO3550 switch in a certain unit. For the sake of network security, the security requirements for some ports are high, that is, only the specifi
Microsoft's Windows Server 2012 has been able to support LACP link aggregation, due to the use of link aggregation can achieve line redundancy and bandwidth increase, here I used a Cisco 2960 to do a test for interested friends reference.Experiment Preparation:Cisco switch 29,601, install server 2012 servers, there are two Gigabit network card, network cable two root.Steps:1. Configuration of
Cisco L3 switch Policy Routing for network access and Traffic DistributionI. Description of the solution environment 1. There are two groups of Group1 and Group2 in the environment, respectively, to access the Internet from two different network outlets. 2. The core network is a Cisco 3560G layer-3 Switch with four VLA
can terminate this process.Test the Ethernet Channel ConfigurationThe next step is to test the Ethernet channel, which is bound with the switch port to provide more Ethernet connections. If one channel fails, the Ethernet channel usually provides redundancy. This process uses the port aggregation protocol PAgP), which takes about 15 seconds.Trunk configuration test wired and wireless networksNext, the switch
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