How do Layer 3 switches terminate VLANs, and whether there are routes, VLAN tags are no longer avail

It depends on how you network.

First of all, the IP segments of VLAN10 of the two switches are different, so Layer 3 routing is required for the communication between the connected PCs (because they are cross-network segments).

Therefore, the switches are interconnected at Layer 3, and an interconnected VLAN needs to be set up, such as VLAN11, the interconnected physical port is added to VLAN11, and then the Layer 3 virtual interface of VLAN 11 is configured with IP addresses and IP addresses on both sides.

On the same network segment. As for whether the trunk port allows VLAN11 to pass through or directly use the access port, it is okay, because the interconnection only needs Layer 3 information, and it does not matter whether the Layer 2 is connected, it is recommended to use the access port directly.

Both parties also need to route each other's VLAN10 addresses, which can be done using OSPF or static or RIP.

I'll help a friend with that problem. First of all, the interconnected ports between the two switches must be able to communicate through Layer 2, that is, regardless of whether the other VLAN numbers are the same, but the two interconnected ports must have a network segment, which can be the IP of the same network segment on the Layer 3 port, or the Layer 2 port plus the virtual interface, if it is a virtual interface, then the VLAN number must be the same and the IP address must be in the same network segment. Therefore, as mentioned by the previous friend, VLAN11 is the communication between two switches, which is the premise of the two VLAN10 you mentioned.

PTN) transport network, generally more than two VLANs, one is a management VLAN and the other is a service VLAN. In general, it's all trunk. Of course, you can not use trunk, and you can directly route to Layer 3, but the routing table brought by this is too large, so the general design of the operator is trunk.

The default VLAN in the switch is the default configuration: all ports are in VLAN 1 by default, also known as default VLAN 1.

However, some switches do not have a default VLAN by default, that is, all ports cannot be connected, and you need to configure a VLAN by yourself to use it.

A switch is a type of network equipment used for electrical (optical) signals**. It can provide an exclusive electrical signal path for any two network nodes connected to the Jiaozheng Fool Change. The most common type of switch is an Ethernet switch.

Other common ones include voice switches, fiber optic switches, etc.

The Chinese name of VLAN"Virtual LAN"。It is a logical set of devices and users that are not limited by physical location, and can be organized according to factors such as function, department, and application, and communicate with each other as if they were in the same network segment, hence the name virtual LAN.

VLAN is a relatively new technology that works at Layer 2 and Layer 3 of the OSI reference model, where a VLAN is a broadcast domain, and communication between VLANs is done through Layer 3 routers. Compared with traditional LAN technology, VLAN technology is more flexible and has the following advantages:

1. Reduce the management overhead of moving, adding, and modifying network devices;

2. It can control broadcasting activities; It can improve the security of the network.

Configure a VLAN for the router and connect the router to this VLAN. To enable inter-VLAN communication, you must set a trunk port and classify it into each VLAN, generally the router is connected to the external network, so you should set the default route to the router on the switch, and configure the backhaul route on the router.

Set a switch interface to trunk mode and set sub-interfaces corresponding to three VLANs on the router. For specific equipment, refer to the switch and router manual.

Divide two VLANs on the core and shaft switches at the same time, and the port configuration is on the shaft switches.

VLANs can be configured for core and access switching, and trunks can be configured between ports, which is not very different from direct connection.

Like ordinary Layer 2 switches, there is a Layer 3 interface that can communicate with IP addresses or VLANs.

Layer 3 switches divide VLANs in the same way as Layer 2, but are generally used for Layer 3**.

interfce vlan 10

ip add

It is used as a gateway for VLANs

VLANs belong to the concept of L2 and VLANIF belong to the concept of L3.

To configure a VLAN, you only need to create a VLAN and join the port to the corresponding VLAN.

If you don't have a Layer 3 application, you don't need to configure VLANIF

What switch do you have? Again, do you divide Layer 2 VLAN or Layer 3 VLAN?