Types of ports.docx - A switch port can be in one of two...

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A switch port can be in one of two modes:accessandtrunk. There are two ways a switch port can settledown into one of these two modes: static and dynamic. You can manually configure a switch port to be inthe access or trunk mode in the static method. You can also let Dynamic Trunking Protocol (DTP) run onan interface to negotiate trunking in the dynamic method. Cisco switches exchange DTP messages todynamically learn whether the device at the other end of the link wants to perform trunking and, if so,which trunking protocol (ISL or 802.1Q) to use.Access PortsA switch port in access modes belongs to one specific VLAN and sends and receives regular Ethernetframes in untagged form. The switch interfaces connected to devices such as desktops, laptops, printersetc. are typically configured as access ports. By default, a Cisco switch port is assigned to the defaultVLAN 1 in access mode. You can explicitly set the switch port to access mode usingcommandswitchport mode accessin interface configuration mode. The VLAN that certain switch port isassigned to can be changed using commandswitchport access vlanvlan-id, in interface configurationmode.Trunk PortsThe distinguishing feature of trunk ports is that they carry traffic from multiple VLANs at the same time.Such interfaces are most commonly configured between two switches but they can also be configuredbetween a switch and a router, and even between a server and a switch. The range of VLAN IDs that canbe configured on a Cisco switch is 1 to 4094 which is divided into normal-range VLAN IDs of 1 to 1005and extended-range VLAN IDs of 1006 to 4094.

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Term
Spring
Professor
AK
Tags
Network switch, Trunking, switch port

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