How do you check what VLAN a device is on?
|
For example, check the VLAN configuration of GE0/0/1.
display port vlan Port Link Type PVID Trunk VLAN List ------------------------------------------------------------------------------- Eth-Trunk0 hybrid 1 - GigabitEthernet0/0/1 access 1 - GigabitEthernet0/0/2 trunk 1 1-11 13-30 GigabitEthernet0/0/3 access 10 - …… Display information about VLANs configured on bridged Ethernet interfaces. For interfaces configured to support a VoIP VLAN and a data VLAN, the 8 command displays both tagged and untagged membership for those VLANs. Note: When a series of VLANs is created using the 9 statement, such VLAN names are preceded and followed by a double underscore. For example, a series of VLANs using the VLAN range 1 through 3 and the base VLAN name marketing would be displayed as __marketing_1__, __marketing_2__, and __marketing_3__. Note: To display an 802.1X supplicant successfully authenticated in multiple-supplicant mode with dynamic VLAN movement, use the user@switch> show vlans
Name Tag Interfaces
default None
xe-0/0/34.0, xe-0/0/33.0, xe-0/0/32.0, xe-0/0/31.0,
xe-0/0/30.0, xe-0/0/29.0, xe-0/0/28.0, xe-0/0/27.0,
xe-0/0/26.0, xe-0/0/25.0, xe-0/0/19.0, xe-0/0/18.0,
xe-0/0/17.0, xe-0/0/16.0, xe-0/0/15.0, xe-0/0/14.0,
xe-0/0/13.0, xe-0/0/11.0, xe-0/0/9.0, xe-0/0/8.0,
xe-0/0/3.0, xe-0/0/2.0, xe-0/0/1.0
v0001 1
xe-0/0/24.0, xe-0/0/23.0, xe-0/0/22.0, xe-0/0/21.0
v0002 2
None
v0003 3
None
v0004 4
None
v0005 5
None0 operational mode command, where vlan-name is the dynamic VLAN.OptionsFor EX Series and QFX Series switches: noneDisplay information for all VLANs. VLAN information is displayed by VLAN name in ascending order. brief | detail | extensive(Optional) Display the specified level of output. dot1q-tunneling(Optional) Display VLANs with the Q-in-Q tunneling feature enabled. management-vlan(Optional) Display management VLANs. sort-by (tag | name)(Optional) Display VLANs in ascending order of VLAN IDs or VLAN names. vlan-range-name(Optional) Display VLANs in ascending order of VLAN range names. summary(Optional) Display the total number of VLANs and counts of VLANs by type—for example, the number of dynamic, 802.1Q-tagged, and Q-in-Q tunneled VLANs. vlan-range-name(Optional) Display information for the specified VLAN range. To display information for all members of the VLAN range, specify the base VLAN name—for example, employee for a VLAN range that includes __employee_1__ through __employee_10__. For EX Series with ELS Switches and MX Routers: noneDisplay information for all VLANs. brief | detail | extensive(Optional) Display the specified level of output. instance instance-name(Optional) Display information for the specified routing instance. logical-system logical-system-name(Optional) Display Ethernet-switching statistics information for the specified logical system. operational(Optional) Display information for the operational routing instances. vlan-name)(Optional) Display information about the specified VLAN. interface interface-name(Optional) Display information about the specified interface. For SRX devices: noneDisplay information for all VLANs. brief | detail | extensive(Optional) Display the specified level of output. (Optional) Display information about a specific interface. logical system(Optional) Display name of the logical system or all. operational(Optional) Display information for the operational switching instances. Required Privilege Levelview Output FieldsTable 1 lists the output fields for the 8 command. Output fields are listed in the approximate order in which they appear. Table 1: show vlans Output Fields Field Name Field Description Level of Output Name Name of a VLAN. none, brief Tag 802.1Q tag applied to this VLAN. If none is displayed, no tag is applied. All levels Interfaces Interface associated with learned MAC addresses or All-members option (flood entry). An asterisk (*) beside the interface indicates that the interface is UP. All levels Address IP address. none, brief Ports Active /Total Number of interfaces associated with a VLAN: Active indicates interfaces that are UP, and Total indicates interfaces that are active and inactive. brief VLAN Name of a VLAN. detail, extensive Admin state State of the interface. Values are: enabled—The interface is turned on, and the physical link is operational and can pass packets. detail,extensive MAC learning Status Indicates if MAC learning is disabled. detail, extensive Description Description for the VLAN. detail,extensive Primary IP Primary IP address associated with a VLAN. detail Number of interfaces Number of interfaces associated with a VLAN. Both the total number of interfaces and the number of active interfaces associated with a VLAN are displayed. detail, extensive STP Spanning tree associated with a VLAN. detail,extensive Tagged interfaces Tagged interfaces with which a VLAN is associated. detail,extensive Untagged interfaces Untagged interfaces with which a VLAN is associated. detail. extensive Dot1q Tunneling Status Indicates if Q-in-Q tunneling is enabled. extensive Customer VLAN ranges List of customer VLAN (C-VLAN) ranges associated with this service VLAN (S-VLAN). extensive Private VLAN Mode The private VLAN mode for this VLAN. Values include Primary, Isolated, and Community. extensive Primary VLAN Primary VLAN tag for this secondary VLAN. extensive Internal Index VLAN index internal to Junos OS software. extensive Origin Manner in which the VLAN was created: static or learn. extensive Protocol Port-based VLAN or MAC-based VLAN. MAC-based protocol is displayed when VLAN assignment is done either statically or dynamically through 802.1X, extensive IP addresses IP address associated with a VLAN. extensive Number of MAC entries For MAC-based VLANs created either statically or dynamically, the MAC addresses associated with an interface. What is device VLAN?A virtual LAN (VLAN) is a logical overlay network that groups together a subset of devices that share a physical LAN, isolating the traffic for each group. A LAN is a group of computers or other devices in the same place -- e.g., the same building or campus -- that share the same physical network.
How to check VLAN interface in Linux?For that, you need create an interface file like other interface files in /etc/sysconfig/network-scripts/ directory with vlan id info inside. So for example our eth0. 300 file will look like this. Note: VLAN is a big networking topic.
|
