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jskfanFlag for Cyprus

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WAN Site Edge Routers

the screenshot below represents the Network topology of a company.
they have routers in multiple sites connected through WAN. all sites have 2 Entry/Exit points (Routers), for instance RA and RB as shown in the screenshot.

my question is how do you make both RA and RB handle the requests in and out while keeping fault tolerance ?
What I mean is RA as well as RB will both have all routes for their Site as well as to the sites on the other side of the WAN. if a request from IN or Out of their  site gets to them , one of them only will handle it and the other router will not ( means they distribute the load),
and if one of them goes down the other will handle all the IN/Out requests.

Thanks

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ArneLovius
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One would normally run a routing protocol such as OSPF or BGP between all of the routers in the WAN.

You might also run HSRP on the LAN interfaces of RA and RB to present a VIP (Virtual IP address) as the default gateway on the LAN side of RA and RB
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ASKER

Ok...

HSRP like protocol will be configured for RA and RB, so that Routers 1,2,3,4 will route to the VIP presented by the HSRP.
so that's the outgoing traffic


for incoming traffic (RA and RB are running EIGRP), do we need to configure for instance HSRP with another VIP so that the incoming traffic will hit the VIP and come in to the LAN ?
I presumed that 1, 2,3 & 4 were hosts rather than routers, and were on the LAN side of RA and RB.

What type of WAN links are you using ? do they terminate on a single router such as a T1, or do they use Ethernet, such as a Fibre point to point circuit ?
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ASKER

the WAN is Fibernet..
1, 2,3 & 4 are just other routers on a certain site
our sites connect to the WAN
In which case your diagram makes no sense to me.

I presume fibernet is a telco/isp, unfortunately is doesn't tell me anything about the type of WAN links you are using.
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The WAN is not shared with other companies..it is dedicated to our company
A WAN link usually by definition is not shared.

Are the links T1, T33, OC12, Ethernet, Gigabit Ethernet, DWDM, Wireless, Something else ? What constitutes the handover/demarc between the service provider and you ?
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WAN is managed by Service Provider
Our Company , just manage what is off  the edge of the  WAN
What constitutes the handover/demarc between the service provider and you ?
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ASKER

there is  the  cabling junction box
With so many questions unanswered, I can only provide very generic advice.

HSRP requires a shared access medium such as Ethernet, if you have two routers connected to individual lines, then you cannot run HSRP on the WAN side, but you would not need to with BGP.

If however you have a managed WAN, the routing protocols of the WAN would be managed by the service provider...
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With so many questions unanswered, I can only provide very generic advice.

The question is not clear..

Consider the WAN as ethernet medium
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ArneLovius
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Thank you ArneLovius
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ASKER

Thank you very much for your explanation