An Australian based company has 2 links between Sydney (ASN100) and Melbourne (ASN200) department, one is 100Mbit/s and the other is 40Mbit/s. All routers in a ASN have iBGP connections and the links between SYD and MEL are eBGP. 

How to configure the router so that the company can control the routing where the 100Mbit link is always used for both Melbourne's ingress and egress traffic. The 40Mbit link should be used only if the 100Mbit link is down. 

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SYDR1 # 100Mbit eBGP MELR1 iBGP iBGP IBGP IBGP ASN 100 SYD + IBGP iBGP MEL ASN 200 $ # iBGP IBGP IBGP SYDR2 IBGP + 40Mbit eBGP MELR2 # SYDR1 # 100Mbit eBGP MELR1 iBGP iBGP IBGP IBGP ASN 100 SYD + IBGP iBGP MEL ASN 200 $ # iBGP IBGP IBGP SYDR2 IBGP + 40Mbit eBGP MELR2 #

Answer rating: 100% (QA)

To configure the routers to prioritize the 100Mbit link over the 40Mbit link for both Melbournes ingress and egress traffic while using the 40Mbit lin... View the full answer