What is a trunk link between two switches?

What is a trunk link between two switches?

Trunk links are physical links between switches or between switches and routers. The data frames transmitted on a trunk link must be tagged so that devices can identify the VLAN to which the data frames belong. Therefore, a trunk link can carry data frames of multiple VLANs, as shown in Figure 1-1.

Do you trunk between switches?

Trunk links are required to pass VLAN information between switches. A port on a Cisco switch is either an access port or a trunk port. Access ports belong to a single VLAN and do not provide any identifying marks on the frames that are passed between switches.

How is a trunk link between switches different from an uplink?

11 Replies. An uplink port would be used to pass traffic to another switch or router or network device. A trunk port would be used to pass VLAN traffic between two switches or other network devices.

Can a switch have two uplinks?

For Stacking It is one of the two methods to achieve stacking, other than using a dedicated port. Uplink port offers a perfect fit for stacking switches with more flexibility but less cost – simply connect the uplink ports on each stackable switch with DAC/AOC, or optical transceivers and fiber patch cables.

What is the purpose of trunking?

The main purpose of trunking is to carry traffic between switches and maintain the VLAN information. Unlike an access link, the trunk link does not belong to a single VLAN but instead can carry traffic from several VLANs over a point-to-point link between two devices that understand the protocol.

What protocols are used to configure trunking of a switch?

On Cisco Devices, VTP (VLAN Trunking Protocol) maintains VLAN configuration consistency across a single Layer 2 network. VTP uses Layer 2 frames to manage the addition, deletion, and renaming of VLANs from switches in the VTP client mode.

What is the purpose of trunk between to switches?

The main purpose of trunking is to carry traffic between switches and maintain the VLAN information. Unlike an access link, the trunk link does not belong to a single VLAN but instead can carry traffic from several VLANs over a point-to-point link between two devices that understand the protocol.

What is the difference between access and trunk?

As for the difference between Trunks and Access ports, a trunk does add dot1q or ISL tags directly to frames and can exist on all or multiple vlans. While an access port only passes traffic from a set vlan but does not modify the frame with a vlan tag.

What is trunk port in Cisco switches?

A port on a Cisco switch is either an access port or a trunk port. Access ports belong to a single VLAN and do not provide any identifying marks on the frames that are passed between switches. Access ports also carry traffic that comes from only the VLAN assigned to the port. A trunk port is by default a member of all the VLANs that exist on the switch and carry traffic for all those VLANs between the switches. To distinguish between the traffic flows, a trunk port must mark the frames with