Chapter 5 - Inter-Vlan Routing
A Coggle Diagram about Preparation ( Legacy inter-VLAN routing requires routers to have multiple
Each one of the router’s physical interfaces is connected to a
Each interface is also configured with an IP address for the subnet
associated with the particular VLAN.
Network devices use the router as a gateway to access the
devices connected to the other VLANs., legacy times : FOR SWITCH : go to each port personally to assign them to the respective vlans by using "switchport mode access vlan "number" and FOR ROUTER : go to port interface and assign IP address and no shut it), Preparation 2.0 ( An alternative to legacy inter-VLAN routing is to use VLAN trunking
VLAN trunking allows a single physical router interface to route
traffic for multiple VLANs.
The physical interface of the router must be connected to a trunk
link on the adjacent switch.
On the router, subinterfaces are created for each unique VLAN.
Each subinterface is assigned an IP address specific to its subnet
or VLAN and is also configured to tag frames for that VLAN., Modern times FOR SWITCH : create vlans then go to interfaces whichever vlans you wish to assign and use switchport mode trunk and FOR ROUTER SUBINTERFACE CONFIGURATION : go to interface for the router you want to configure and use the command "encap dot1q "vlan number""
key in the ip address for the subinterface port
no shut the main interface port not the subinterface port), Verifying configurations, IP addressing issues (Errors with IP Address and Subnet Masks and Verifying IP Address and Subnet Mask
Configuration Issues), Objectives : ( Describe the three primary options for enabling inter-VLAN routing.
Configure legacy inter-VLAN routing.
Configure router-on-a-stick inter-VLAN routing.
Troubleshoot common inter-VLAN configuration
Troubleshoot common IP addressing issues in an inter-VLAN-routed
Configure inter-VLAN routing using Layer 3 switching.
Troubleshoot inter-VLAN routing in a Layer 3-switched environment.), Inter-VLAN Routing
Configuration, Legacy Inter-VLAN Routing, Router-on-a-Stick Inter-VLAN Routing, Verifying Routing AKA Test Runs and Troubleshooting Problems