How do you troubleshoot a switch issue?
List of steps
- Define the problem.
- Find device(s) having issues.
- Check VLANs configuration.
- Verify trunk ports configuration.
- Check access ports configuration.
- Troubleshoot client issues.
What is routing and switching?
The function of Switching is to switch data packets between devices on the same network (or same LAN – Local Area Network). The function of Routing is to Route packets between different networks (between different LANs – Local Area Networks). Switches operate at Layer 2 of the OSI Model (Datalink Layer).
What causes switch flapping?
A MAC Flap is caused when a switch receives packets from two different interfaces with the same source MAC address.
What causes network switch failures?
The problem of switch failure generally includes physical layer failure, port negotiation and self-loop issues , Vlan issues , device compatibility issues , and other problems. The superior performance of the switch and the substantial drop in price have promoted the rapid popularity of the switch.
What are the basic troubleshooting commands?
Network Troubleshooting Commands
- Ping.
- Telnet.
- TraceRoute.
- ARP.
- IPConfig/IFConfig.
- Netstat.
How do I know if my network switch is bad?
You can only test by symptom as your not going to get a report or log from the switch itself. The only way to definitively know is to replace the switch and test for changes. Could also check/replace the drops and patch cables.
Why is switching faster than routing?
Within the LAN environment, a Layer 3 switch is usually faster than a router because it is built on switching hardware. In fact, many of Cisco’s Layer 3 switches are actually routers that operate faster because they are built on “switching” hardware with customized chips inside the box.
Why is switching needed?
1 The purpose of switching is to provide interconnection between all the nodes on a network without the need for single connections between each pair of nodes. Therefore, we require switching technology that provides a mechanism to establish connectivity as and when required.
What causes flapping of uplink interfaces?
Network interface flapping is typically caused by one of the following: Speed or duplex mismatch. Faulty cable. Faulty SFP.
What is Circuit flapping?
A condition in which a route in a network becomes unavailable and available over and over again.
How do I know if my network switch is broken?
How do I troubleshoot routing problems?
The standard go-to tools for troubleshooting routing problems are ping and traceroute. Ping is a very simple minded tool. It sends an Internet Control Message Protocol (ICMP) “echo request” packet to the destination device, which sends back an “echo response” packet. ICMP is a special IP protocol, different from either TCP or UDP.
What are the benefits of routing and switching technologies?
Using routing and switching technologies allows your staff, even those located in different locations, to have equal access to all your business applications, information and tools. Keeping everyone connected to the same tools can increase employee productivity.
How can I Make my routing and switching gear easy to use?
Make sure your routing and switching gear is easy to install use, and manage For example, switches with in-line power allow you to place equipment, such as wireless access points and IP phones, anywhere there’s a network wall jack. This saves you the trouble and expense of installing extra electrical outlets or wires to power the devices.
How to troubleshoot the Switch port configuration issues?
If the problem is related to the switch port configuration, using show interface switch port command must be done to check out what is the root cause of the problem. The show interface switch port and the show running config are some of the powerful tools for troubleshooting the port configuration issues.