using virtual tunnel between virtual-router
Example: BGP Path Selection:
| Dual Homed - Dual Router | |
|---|---|
| Ingress traffic / attract : prefix length MED ( rarely used ) AS-PATH length |
Egress traffic: Pre-pending AS-PATH | |
| Ingress traffic: |
Egress traffic: | |
| Dual homed - Single router | |
| |
| |
