We currently have a single data centre with 2 x 100Mbps internet links from a single ISP. The 2 links are routed and terminate on separate ISP switches/routers with a /30 IP address, the links terminate on 2 Cisco 3900 series routers in the DC. eBGP and iBGP has been configured to provide high availability. We are currently using a private BGP ASN from the ISP and /24 subnet which is routed to the primary 3900 router and to the backup 3900 router in the event of a primary router failure.
We are looking to add a second data centre for DR and we need the /24 to failover over to the DR data centre in the event that the primary DC fails. The second DC will only have a single 100Mbps internet connection as resiliency in DR is not required. I understand how eBGP/iBGP willl be setup and configured for both sites but I would like to know the pros/cons and peoples experiences of using a single ISP to provide internet connectivity for both Data Centres? I understand that I will need a public ASN if I use separate ISPs.
Is using a single ISP for all 3 internet connections acceptable? The circuits will be connected to resilient parts of the ISPs network.
If we decide to use a second ISP, would it be recommend to use ISP1 for the Primary and DR data centre primary links and ISP2 for the Primary data centre backup link?
Any help and your suggestions/experiences will be appreciated.
We are pleased to announce availability of Beta software for 16.6.3.
16.6.3 will be the second rebuild on the 16.6 release train targeted
towards Catalyst 9500/9400/9300/3850/3650 switching platforms. We are
looking for early feedback from customers befor...
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