Enterprise Infrastructure
Enterprise Infrastructure
Some additional methods allow faster STP convergence if a link failure occurs. Portfast Allows fast connectivity on ports by immediately switching to the Forwarding state without going through ...
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PVST+ (Peer-VLAN Spanning-Tree) First of all, let’s remember: Common spanning-Tree (CST) only handles one instance of STP on switches, based on 802.1Q trunks, by default over vlan 1 ...
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Choosing root ports Once the root bridge is chosen, a Root Port must be chosen for each switch, which is not the root bridge. The root port always ...
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Spanning-Tree Protocol can exist between two devices (switches). Multiple active paths between devices cause loops in the network. STP is a layer 2 link management protocol that provides ...
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The audio of the video is only in Spanish EtherChannels can be negotiated between two switches; there are two protocols for this negotiation: PAgP and LACP. PAgP (Port ...
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Etherchannel, also known as Link Aggregation, is a technology that allows grouping several physical interfaces that connect a pair of devices; when the etherchannel is established, the devices ...
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VTP uses Layer 2 trunk links to communicate VLAN information within a group of switches. VTP manages the addition, deletion, and renaming of vlan names by sending VTP ...
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DTP is cisco’s proprietary protocol for negotiating trunking mode between two switches. A trunk link can only be negotiated between two switches if both belong to the same ...
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The video is in Spanish only Trunk ports can carry two or more VLANs over a single switch port and are helpful when switches are connected to other ...
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The video is in Spanish only Virtual LAN – VLAN A VLAN defines a broadcast domain; they help us to create logical networks within the same switch with ...
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UDLD is a Cisco proprietary Layer 2 protocol that monitors the state of a port to validate bidirectional communication. Recall that each port in a switch is bidirectional, ...
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LLDP is similar to the CDP protocol but is based on the IEEE 802.1ab standard. The great advantage of LLDP is that it works on multi-vendor networks. Information ...
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CDP is a Cisco proprietary protocol used to collect information from devices on the network that is directly connected, such as hardware, software, device name and more. CDP, ...
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Switches can automatically detect error conditions on each of their ports. When an error is detected, the switch puts the port in “errdisable” state and is disabled. This ...
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Switches operate at layer 2 of the OSI model (Data Link). It sends frames based on destination MAC addresses (Media Access Control) found within the same frame based ...
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