nanog mailing list archives
Re: 1GE L3 aggregation
From: Baldur Norddahl <baldur.norddahl () gmail com>
Date: Sat, 18 Jun 2016 21:31:37 +0200
On 18 June 2016 at 13:07, Mark Tinka <mark.tinka () seacom mu> wrote:
Our PoPs are connected in a ring topology (actually multiple rings). If a link goes down somewhere, or an intermediate device crashes, the L2VPNwillreconfigure and find another path.Which is what would happen anyway with your IGP if the service were delivered in the Access, but with fewer moving parts and less inter-dependence if the problem went beyond just ring failure or device crash.
Is the claim about fewer moving parts actually true? Yes if you are comparing to a plain native single-stack network with IPv4 (or IPv6) directly on the wire. But we are doing MPLS, so in our case it is L2VPN vs L3VPN. Both will reroute using the exact same mechanism, so no difference here. I found that I could remove large parts of the configuration on the access edge devices when we went from L3VPN to L2VPN. Some people will find the network easier to understand when all major configuration is in only two devices, and those two devices are mostly a mirror of each other. I agree that L3VPN is the better solution, at least in principle. That is why we started by implementing L3VPN. But in practice the L2VPN solution we have now is actually easier. Regards, Baldur
Current thread:
- 1GE L3 aggregation Saku Ytti (Jun 16)
- Re: 1GE L3 aggregation Pierre Emeriaud (Jun 16)
- Re: 1GE L3 aggregation joel jaeggli (Jun 16)
- Message not available
- Message not available
- Re: 1GE L3 aggregation Baldur Norddahl (Jun 16)
- Re: 1GE L3 aggregation Saku Ytti (Jun 16)
- Re: 1GE L3 aggregation Baldur Norddahl (Jun 16)
- Re: 1GE L3 aggregation Mark Tinka (Jun 18)
- Re: 1GE L3 aggregation Baldur Norddahl (Jun 18)
- Re: 1GE L3 aggregation Mark Tinka (Jun 19)
- Re: 1GE L3 aggregation Baldur Norddahl (Jun 20)
- Re: 1GE L3 aggregation Mark Tinka (Jun 20)
- Re: 1GE L3 aggregation David Charlebois (Jun 22)
- Re: 1GE L3 aggregation Mark Tinka (Jun 22)
- Re: 1GE L3 aggregation Owen DeLong (Jun 22)
- Re: 1GE L3 aggregation Mark Tinka (Jun 22)
- Re: 1GE L3 aggregation Owen DeLong (Jun 22)
- Re: 1GE L3 aggregation Mark Tinka (Jun 22)
- Re: 1GE L3 aggregation Owen DeLong (Jun 22)
- Message not available