Find out the interface causing the flapping. If multiple values in the TC(Send/Receive) column increase, check the event and log information on the NMS to determine whether the local switch causes the topology
Spanning Tree Protocol (STP) is a Layer 2 protocol that aids in preventing loops in Ethernet networks, such as a local area network.
With CDP you can see the IP address (If it is configured), capability, Duplex (and other things of the neighbor device). Here is an example: For STP, you must check each switch directly because it is important to know the roles: Root ports, designated ports and alternative port and the...
With the exception of MST, each and every vlan will be running it's own version of STP, with it's on root switch, root ports, designated ports, and blocked ports. (It's possible to do the same with MST, but that's a story for a different time). If you run the...
not fully understanding switching concepts such as VLANs, STP, and root elections could be the one question that stands between you passing and failing your exam. There will be some switch questions which are memorization based such as “What is a Layer 2 protocol used to maintain a loop-fre...
Ports on the neighbour switch opposite the Root Port are Designated Ports. Your Root Ports point towards the Root Bridge, Designated Ports point away from it. All ports in the Root Bridge will always be Designated Ports because obviously they are going to be pointing away from the Root Bridge...
InSpanning Tree Protocol, any switch other than theRoot Switch, has to find aRoot Port, from its available trunk ports, which is that Swithes Port to reach theRoot Bridge (Switch). The Root Port is calculated in every Switch, other than the Root Switch, by using the lowest accumulated Pa...
Find out the interface causing the flapping. If multiple values in the TC(Send/Receive) column increase, check the event and log information on the NMS to determine whether the local switch causes the topology change, and check whether STP flapping occurs on the device connected to the ...
Is there other way to find out which STP a switch is running? Thanks. Switch#show spanning-tree summ Switch is inpvst mode Root bridge for: VLAN0001 EtherChannel misconfig guard is enabled Extended system ID is enabled Portfast Default is disabled ...
Find out the interface causing the flapping. If multiple values in the TC(Send/Receive) column increase, check the event and log information on the NMS to determine whether the local switch causes the topology change, and check whether STP flapping occurs on the device connected to the ...