Following example shows how to create and configure trunk link to carry multiple VLAN traffic and how to configure the native VLAN for a trunk link.. The Catalyst 2960, 2960-S, or 2960-C switch is a VMPS client. interface Ethernet ALL lacp mode port 1/47-48,2/47-48 active lacp aggregation port 1/47-48,2/47-48 enable exit pretty easy Platform: Catalyst 2960-X, Catalyst 3560. The above picture shows that the trunk link is connected to port fa0/24 on both switches. Let me show you the topology that we’ll use: Above you see a topology with a computer connected to each switch. Say we hypothetically have two Cisco 2960 series access switches. Vendor agnostic technology (IEEE 802.1Q) Switch(config)# interface GigabitEthernet 0/0/10 Switch(config-if)# switchport trunk encapsulation dot1q Switch(config-if)# switchport mode trunk They are connected by a single crossover cable. The problem I'm having is the VLAN's are not passing from the existing to the new. Use Trunk ports for connecting other switches or Axia devices with switches built-in (like a PowerStation Main or QOR or xSwitch). I've got the default VLAN1 on each switch. Here is what I have now: 2960-X Uplink Port. In this lesson I will demonstrate how to configure a trunk between Cisco Catalyst switches. By default, all switch ports in Layer 2 are configured to operate as access links. I'm aware that this may be a simple question. SW1# configure terminal Enter configuration commands, one per line. I've got a new 2960 switch, and an existing 2960. A voice VLAN port is an access port attached to a Cisco IP Phone, configured to use one VLAN for voice traffic and another VLAN for data traffic from a device attached to the phone. You can have dynamic-access ports and trunk ports on the same switch, but you must connect the dynamic-access port to an end station or hub and not to another switch. In our example, the Switch port 40 was configured as a trunk. this config works vs a cisco 35XX stack from a ers4850 GTS stack! We’ll put the computers in the same VLAN and create a trunk between the two switches. SW1(config)# spanning-tree portfast default %Warning: this command enables portfast by default on all interfaces. I have a 2960 running IOS 12.2 (25r)SEE1, and trying to configure a trunk for dot1q encapsulation. End with CNTL/Z. To participate in VTP, at least one trunk port on the switch stack must be connected to a trunk port of a second switch or switch stack. The port is lit up on the core switch, but not on the 2960-X uplink port. Before you create the trunk link on the switches, make sure both have a native VLAN installed on them. The following Vlans were allowed to use this port as a trunk: 1, 100 and 200. Don’t forget to save your Switch trunk configuration Trunk port configuration example to carry the different VLAN tags between two devices on the same physical link. *** LACP (Phase 2) ***! Vlan 1 is the default native VLAN of Cisco Switches. Both switches, S1 and S2, are connected at port Fa0/1 (Fast Ethernet 0/1). Let’s consider the simplest case when you have to hook up 3 departments of a company to different logical networks (Vlans) using one access layer switch Cisco 2960 (Sometimes they are called switches of the second layer of OSI model).For example we need to organize these networks (Vlan):Sales department (192.168.10.0 255.255.255.0)Accounting department (192.168.20.0 255.255.255.0) The VMPS can be a Catalyst 6500 series switch, for example, but never a Catalyst 2960, 2960-S, or 2960-C switch. You should now disable portfast explicitly on switched ports leading to hubs, switches and bridges as they may create temporary bridging loops. 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