switch(config)#int type <no> switch(config-if)#switchport mode trunk switch(config-if)#switchport trunk allowed vlan all/vlan no switch(config-if)#exit switch(config)#exit switch#
VLAN 1 is the management VLAN. All switch ports are members of VLAN1.
The default VLAN on a network switch is VLAN 1, which is automatically assigned to all switch ports when they are first configured. This VLAN is used for management and control traffic within the switch. It's important to note that using VLAN 1 for user data traffic can create security vulnerabilities, so best practices recommend changing the default VLAN and using separate VLANs for different types of traffic.
The purpose of a native VLAN is to handle untagged traffic on a trunk port in a network switch. When a switch receives frames that are not tagged with a VLAN identifier, it associates those frames with the native VLAN, typically the default VLAN (VLAN 1). This allows for proper segregation and management of traffic in a VLAN environment, ensuring that untagged frames are processed appropriately within the network. Additionally, the native VLAN helps maintain compatibility with devices that do not support VLAN tagging.
The distinct type of VLAN used by an administrator to access and configure a switch is called the "Management VLAN." This VLAN is specifically designated for management traffic, allowing administrators to connect to the switch for configuration purposes. Typically, it is assigned a specific VLAN ID and is separate from user data traffic to enhance security and manageability.
the switchport access vlan 99 command is used to designate a specific VLAN for a switch port, allowing you to control how traffic on that port is treated and segregated from traffic on other ports and VLANs in the network. This is a fundamental configuration step in building and managing VLANs within a network infrastructure.
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VLAN
NVRAM
no vlan XXX copy run star
1) reset the revision number before installing. 2) have a backup switch with existing VLAN data.
The command "shutdown vlan 17" is used in network configuration to disable VLAN 17 on a network switch. When executed, it effectively prevents any traffic from being forwarded through this VLAN, rendering it inactive. This can be useful for network management purposes, such as troubleshooting or reconfiguring the VLAN. To reactivate the VLAN, the command "no shutdown vlan 17" would be used.