Multihoming Question: Is This Possible?
Jan 3, 2008
I know there are providers out there who provided managed bonded ADSL and such, however I do not want these for 2 reasons:
a) I want control of the network
and
b) I do not want to buy expensive hardware I do not need!
With that out of the way, I was looking to do the following
- Have a /25 as ISP X as a co-located server.
- Have two ADSL connections from the same or different providers.
- The two ADSL connections would "join" the co-located server using its IPs as a single, multihomed connection.
Now I do not know anything at all about BGP really, but does anyone know if it is at all possible to have this working via BGP or similar?
If so, what will I require in terms of IP addressing?
Do I need to apply for an AS, or can I use private ones?
Does the co-located server require two subnets and/or two NICs? Can I set up some sort of vlan?
Is there anything else missing that I'd require?
Are there any alternative and possibly easier solutions?
If anyone is able to answer some of these questions it'll be greatly appreciated. I'm trying to decide if I should buy a book on BGP or if I'm just going to be wasting my time.
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Aug 8, 2009
we're making a major move to offer some new services, etc, so we're going to have a couple racks in a datacenter, and will be running our own network. Currently I've purchased a 2821 router and a 3750G-24-T-S switch. I've got an ethernet drop from Cogent and we're set up for static routing.
I'm waiting on pricing from Sprint, Verizon and Level3 for a second ethernet line, and I'd like to multihome between them. It's been a while since I've done much cisco configuration, so I'm a little rusty. I know I'll have to run BGP between my routers and the provider, and IBGP between the two routers.
I'm looking for suggestions to run internally. We'll be offering standard shared hosting, a vps/cloud solution, dedicated servers and standard colocation.
Some people have suggested to run each of my different products on a separate VLAN, but I'm worried that would be wasting IP addresses, since one would be needed for the default gateway of each. For instance if give a /29 with my dedicated servers or my higher VPS plans, then it uses up 8 ip addresses, but the customer only gets 6. That seems right, unless I'm thinking about this incorrectly.
So as for my main question... If I did it that way, would I be ok to just run EIGRP on the 3750 to route between vlans, and then redistribute a default route from BGP into EIGRP?
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