Your Ultimate Inter-VLAN Routing Configuration Guide for Cisco
CISCO Router basic configuration with sub interface - YouTube
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Example for Configuring Sub-interfaces to Implement Inter-VLAN Communication - AR100-S, AR110-S, AR120-S, AR150-S, AR160-S, AR200-S, AR1200-S, AR2200-S, and AR3200-S CLI-based Typical Configuration Examples - Huawei
delete sub interfaces
Inter-VLAN Routing using the concept of Router on a Stick - Expert Network Consultant
Example for Configuring Dot1q Termination Sub-interfaces to Implement Inter- VLAN Communication - AR100, AR120, AR150, AR160, AR200, AR1200, AR2200, AR3200, and AR3600 V200R010 CLI-based Configuration Guide - Ethernet Switching - Huawei