Configuring Cisco devices involves separate steps on the
switch for VLANs and port modes, and on the router for inter-VLAN routing (encapsulation) and DHCP services.
Switch Configuration (VLANs, Access, Trunk)
These commands are executed on the Cisco switch to create VLANs and configure the ports.
Enter global configuration mode:
cisco
enable
configure terminal
Create VLANs:
cisco
vlan 10
name DATA_VLAN
vlan 20
name VOICE_VLAN
exit
Configure Access Ports (for end devices like PCs/phones):
cisco
interface FastEthernet0/1 (or specific interface name)
switchport mode access
switchport access vlan 10
exit
Configure Trunk Ports (for links to other switches or routers):
cisco
interface GigabitEthernet0/1 (or specific interface name)
switchport mode trunk
switchport trunk encapsulation dot1q (Needed on some older or multi-layer switches)
switchport trunk allowed vlan 10,20 (Optional: limits which VLANs are allowed)
exit
Router Configuration (Encapsulation, Gateway, DHCP)
These commands are executed on the router to enable inter-VLAN routing and provide DHCP services.
Enter global configuration mode:
cisco
enable
configure terminal
Configure Encapsulation and Gateway (Router-on-a-stick):
Create subinterfaces on the router's physical interface (e.g., GigabitEthernet0/0) for each VLAN. Each subinterface will serve as the default gateway for its respective VLAN.
For VLAN 10:
cisco
interface GigabitEthernet0/0.10
encapsulation dot1Q 10
ip address 192.168.10.1 255.255.255.0 (This is the **default gateway** for VLAN 10 clients)
no shutdown
exit
For VLAN 20:
cisco
interface GigabitEthernet0/0.20
encapsulation dot1Q 20
ip address 192.168.20.1 255.255.255.0 (This is the **default gateway** for VLAN 20 clients)
no shutdown
exit
Configure DHCP Server:
Create a separate DHCP pool for each VLAN's subnet, specifying the default router and DNS server.
Exclude addresses (optional, but recommended for static IPs like the gateway):
cisco
ip dhcp excluded-address 192.168.10.1 192.168.10.5
ip dhcp excluded-address 192.168.20.1 192.168.20.5
Create pool for VLAN 10:
cisco
ip dhcp pool VLAN10_POOL
network 192.168.10.0 255.255.255.0
default-router 192.168.10.1
dns-server 8.8.8.8 4.4.4.4 (Example public DNS servers)
exit
Create pool for VLAN 20:
cisco
ip dhcp pool VLAN20_POOL
network 192.168.20.0 255.255.255.0
default-router 192.168.20.1
dns-server 8.8.8.8 4.4.4.4
exit
Save the configuration on both devices:
cisco
copy running-config startup-config
ykwong71 blogger
Thursday, 19 March 2026
CISCO CLI Create VLAN, Create DHCP, Create Gateway, Create Encapsulation, Create Trunk and Create Access Part 2
CISCO CLI Create VLAN, Create DHCP, Create Gateway, Create Encapsulation, Create Trunk and Create Access Part 1
CISCO cli create VLAN, create DHCP, create gateway Create Encapsulation Create trunk and Create access
To create and configure VLANs, DHCP, gateways, and interface types on a Cisco device, you will use the following CLI commands. These steps assume you are in
Global Configuration Mode (configure terminal).
1. Create a VLAN
To create a VLAN and assign it a name for easier identification:
bash
Switch(config)# vlan 10
Switch(config-vlan)# name Sales
Switch(config-vlan)# exit
Use code with caution.
Verification: Use show vlan brief to see all active VLANs.
2. Create a Gateway (SVI)
A Switch Virtual Interface (SVI) acts as the default gateway for devices within that VLAN.
bash
Switch(config)# interface vlan 10
Switch(config-if)# ip address 192.168.10.1 255.255.255.0
Switch(config-if)# no shutdown
Switch(config-if)# exit
Use code with caution.
3. Create a DHCP Pool
Configure the switch or router to automatically assign IP addresses to clients in a specific VLAN.
bash
Switch(config)# ip dhcp excluded-address 192.168.10.1 192.168.10.10
Switch(config)# ip dhcp pool SALES_POOL
Switch(dhcp-config)# network 192.168.10.0 255.255.255.0
Switch(dhcp-config)# default-router 192.168.10.1
Switch(dhcp-config)# dns-server 8.8.8.8
Switch(dhcp-config)# exit
Use code with caution.
Note: Use ip dhcp excluded-address to reserve IPs for static devices like the gateway.
4. Create Access and Trunk Ports
Configure physical interfaces to either connect to an end-device (Access) or another network device (Trunk).
Access Port (End-device like a PC):
bash
Switch(config)# interface fastEthernet 0/1
Switch(config-if)# switchport mode access
Switch(config-if)# switchport access vlan 10
Use code with caution.
Trunk Port (Connects to another switch or router):
bash
Switch(config)# interface fastEthernet 0/24
Switch(config-if)# switchport mode trunk
Switch(config-if)# switchport trunk allowed vlan 10,20
Use code with caution.
5. Create Encapsulation (Router-on-a-Stick)
On a router, you must define the encapsulation type (usually IEEE 802.1Q) on a sub-interface to route between VLANs.
bash
Router(config)# interface gigabitEthernet 0/0.10
Router(config-subif)# encapsulation dot1q 10
Router(config-subif)# ip address 192.168.10.1 255.255.255.0
Use code with caution.
Do you need to configure inter-VLAN routing specifically for a Layer 3 switch or a Router-on-a-Stick setup?
RUIJIE CLI Create VLAN, Create DHCP, Create Gateway, Create Encapsulation, Create Trunk and Create Access
This guide provides the CLI commands for Ruijie RGOS switches and gateways to create VLANs, DHCP servers, Layer 3 gateways (SVI), encapsulation (802.1Q), and configure trunk/access ports based on standard Ruijie configuration procedures
.
1. Create VLANs
Create VLAN 10 and VLAN 20.
cmnd
Ruijie> enable
Ruijie# configure terminal
Ruijie(config)# vlan 10
Ruijie(config-vlan)# name DATA
Ruijie(config-vlan)# exit
Ruijie(config)# vlan 20
Ruijie(config-vlan)# name VOICE
Ruijie(config-vlan)# exit
2. Create Gateway (SVI - Switched Virtual Interface)
Create the IP address for the VLAN, which serves as the default gateway for client devices.
cmnd
Ruijie(config)# interface vlan 10
Ruijie(config-if-VLAN 10)# ip address 192.168.10.1 255.255.255.0
Ruijie(config-if-VLAN 10)# no shutdown
Ruijie(config-if-VLAN 10)# exit
3. Create DHCP Server
Configure the switch to act as a DHCP server for the VLAN.
cmnd
Ruijie(config)# service dhcp
Ruijie(config)# ip dhcp pool VLAN10_POOL
Ruijie(dhcp-config)# network 192.168.10.0 255.255.255.0
Ruijie(dhcp-config)# default-router 192.168.10.1
Ruijie(dhcp-config)# dns-server 8.8.8.8
Ruijie(dhcp-config)# exit
4. Create Access Port
Assign a physical port to a specific VLAN.
cmnd
Ruijie(config)# interface gigabitEthernet 0/1
Ruijie(config-if-GigabitEthernet 0/1)# switchport mode access
Ruijie(config-if-GigabitEthernet 0/1)# switchport access vlan 10
Ruijie(config-if-GigabitEthernet 0/1)# exit
5. Create Trunk Port & Encapsulation
Configure an uplink port to carry multiple VLANs. Ruijie uses IEEE 802.1Q for encapsulation, which is typically standard.
cmnd
Ruijie(config)# interface gigabitEthernet 0/24
Ruijie(config-if-GigabitEthernet 0/24)# switchport mode trunk
! Permit only specific VLANs (optional but recommended)
Ruijie(config-if-GigabitEthernet 0/24)# switchport trunk allowed vlan add 10,20
Ruijie(config-if-GigabitEthernet 0/24)# exit
6. Save Configuration
cmnd
Ruijie(config)# exit
Ruijie# write
Key Considerations
Encapsulation: While Cisco switches often require switchport trunk encapsulation dot1q before switching to trunk mode, Ruijie switches typically default to 802.1Q encapsulation.
VLAN 1: Do not delete VLAN 1; it is the default management VLAN.
Gateway Requirement: Ensure you create SVI interfaces on the Core Switch or EG Gateway for traffic to route between VLANs.
Wednesday, 18 March 2026
Microsoft 365 Admin Exchange Port to Check DNS Record then Go to My Domain Portal to Add the DNS Record
https://www.youtube.com/watch?v=r3chUhXeALA
These are results for if i purchase microsoft 365 business where to check dns record?
Search instead for if i purcase microsoft 365 business where to check dns record?
AI Overview
To check your DNS records for Microsoft 365 Business, sign in to the Microsoft 365 admin center and navigate to Settings > Domains. Select your domain to view the required TXT, MX, and CNAME records needed for services like email. The records must generally be added at your domain registrar's website.
Microsoft Learn
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Steps to Check DNS Records in Microsoft 365
Sign in to the Admin Center.
Go to Settings > Domains in the left navigation pane.
Select the domain (e.g., contoso.com) you want to check.
Click DNS records to view the required settings.
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Where to Manage DNS Records
If you purchased the domain through Microsoft: You can manage DNS records within the Microsoft 365 Admin Center under the Domain settings.
If you purchased through a third party (e.g., GoDaddy, Namecheap): You must log in to that registrar's website to add or edit DNS records.
Troubleshooting: If services are not working, check the DNS status in the admin center, which will list required fixes.
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Key DNS Record Types to Check
MX Record: Routes email to your inbox.
CNAME Record: Used for Autodiscover (connecting Outlook).
TXT Record: Verifies domain ownership and helps with security (SPF).
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Monday, 23 February 2026
Easy Active Directory Migration From Windows Server 2012 to Windows Server 2022
https://www.youtube.com/watch?v=bpJwZNX1MT8
https://www.youtube.com/watch?v=lJOX0GBnen4
Thursday, 22 January 2026
EATON IPM software Guide
https://www.eaton.com/au/en-gb/digital/brightlayer/brightlayer-data-centers-suite/disaster-avoidance-software/how-to-download-ipm.html
Friday, 26 December 2025
***How to Remove Windows 11 home Product Key and Add Windows 11 Pro Product key with Command and Restore Back to Windows 11 Home Again
https://www.youtube.com/watch?v=BAulJJkJCrY&t=447s
slmgr /upk— Uninstalls the currently installed product key.slmgr /cpky— Removes the product key from the Windows registry to ensure it is completely cleared.
slmgr /ipk <Your-Pro-Product-Key>— Installs the new 25-character product key.- Example:
slmgr /ipk XXXXX-XXXXX-XXXXX-XXXXX-XXXXX
- Example:
slmgr /ato— Attempts to activate the installed product key online.
- Run
changepk.exe /productkey VK7JG-NPHTM-C97JM-9MPGT-3V66T. - Wait for the system to process the upgrade and restart.
- Once restarted, use the
slmgr /ipkcommand from Step 2 to enter your purchased Pro key for final activation.
/ato) command.