How does the Cisco 3560x configure a trunk port to pass through all vlans except vlan1 2?

If you haven't used a brand new Cisco router or switch, the one behind it is the RJ45 port, and that is the configuration port, that is, the switch or router, the port used for configuration, the new switch or router needs to be configured, and you can use this to configure the IP of the device before you can enter the normal network port.

He can be considered independent, he uses RJ45 to 232 to connect to the computer, using HyperTerminal.

to display. It's the light blue line that comes with the device.

If there are only two switches on the entire network, you do not need to configure a trunk.

VLAN 1 is the same as other VLANs, except that the trunk port allows VLAN 1 to pass through by default, while other VLANs need to be specified before they can pass through.

If the VLAN information of a switch is not connected to other switches through the trunk port, the VLAN is only valid on the switch. For example, if two switches are connected by network cables, and one switch port has all 2 VLANs and the other has 3 VLANs, then the computers connected to the VLAN 2 switch and the computers connected to the VLAN 3 switch can communicate with each other. Computer communication between different VLANs needs to be done through Layer 3 network devices (such as routers).

The trunk port can be understood as allowing VLAN information to be transmitted between two different switches.

1. The switch can set the VLAN allowed in the trunk port, as follows:

1. Define port f0 1 (select the port you want to set): intf0 1.

2. Set the port to the trunk port and set the allowed VLAN (select the VLANID to set): SW trunk allowed valn 10, 20, 30

3. End, return to privileged mode: end.

2. The switch can cancel the VLAN allowed through the trunk port, as follows:

1. Define port f0 1 (select the port you want to set): intf0 1.

2. Set the port to the trunk port and cancel the allowed VLAN (select the VLAN ID to be set): SW trunk de allowed valn 10,20,30

3. End, return to privileged mode: end.

Port trunk allow-pass vlan 10 20 30 allows this port to pass through vlan 10 20 30

undo port trunk allow-pass vlan 10 20 30 remove vlan 10 20 30 port pass.

This is the command of the Huawei switch.

How can Huawei have an order to allow?。。 Allow is Cisco's, Huawei and Huasan use permit.

After the trunk port is set on the switch, the IP address of the port for which the VLAN is set cannot be pinged through this port source is caused by the wrong setting

1. Log in to one of the computers, click the icon at the bottom left, select "Run", or use the Windows shortcut key combination "Win+R".

2. After opening the run window, enter the "cmd" command on the "Open" bar and click "OK".

3. Open the cmd window, enter ping in it, press enter, and you can see whether the ping is passed. If the information shown in the following figure is returned, it is pinged.

4. If the following information is returned, it means that the IP address of the port where the VLAN is set is pinged successfully.

Notes:

In a computer network, a layer 2 network can be divided into a number of different broadcast domains, one of which corresponds to a specific group of users, and these different broadcast domains are isolated from each other by default. To communicate between different broadcast domains, one or more routers need to be passed. Such a broadcast domain is called a VLAN.

Hello! 1. First of all.

Your design is to set up a VLAN on the Layer 2 switch, penetrate back to the Layer 3 switch through the daotrunk port, and end it on the Layer 3 switch. The computers under these two switches are under different gateways, and both use different VLAN isolation, which was not able to ping before. To ping effectively, you need to configure routes on Layer 3 switches.

2. If the interconnection port between the switch and the router is configured as a trunk, then the port of the router and the Layer 3 switch must also be configured as a truckRouters and switches need to configure an interface that is in the same network segment as the IP address of the switch interface, and the interface can be applied to the port or VLAN. This allows the router to communicate with the switch.

3. Trunk is a channel dedicated to VLAN communication, which is to configure the switch or router port as a channel for DOT1Q transparent transmission. Makes a VLAN-ID identified in the next port with a trunk configured. The correct usage is:

If VLAN 1 is configured on a Layer 2 switch and the port connected to the Layer 2 switch is configured as a trunk, the port on the Layer 3 switch is also configured as a trunk to identify VLAN 1 in the Layer 2 switch and transparently transmit it to the Layer 3 switch.

The switch can set the VLANs allowed by the trunk port. The details are as follows:

1. Define port f0 1 (select the port you want to set): intf0 1.

2) Set the port as the trunk port and set the allowed VLAN (select the VLANID you want to set): SWRorlowValn10, 20, 30

3) End, return to privileged mode: end.

The switch can cancel the allowed VLAN through the trunk port. The details are as follows:

1. Define port f0 1 (select the port you want to set): intf0 1.

2) Set the port as the trunk port, unallow VLANs (select the VLANID you want to set): SWRorkdeallowvaln10, 20, 30

3) End, return to privileged mode: end.

First of all, the 3550 you mentioned should be a Layer 3 switch, and the 2811 is the router.

1.To draw 4 network segments on the 3550, they are and network segments, and run the route between them on the switch first (why there is another one, you listen to me later).

2.Divide several interfaces on the 3550 to the VLAN10 segment (with the link 2811 router.

In this way, you don't have to ask for the one-arm route given to you by the rookie at all, and don't mislead people's children.

3,。Configure the default route of 8 zeros on the route to the exit, and then configure the dynamic pat to configure the first to understand what I said above.