Does anyone have any experience with using OER for inbound load sharing? I am looking to see if people are generaly satisfied with it's abilities or if I should look for other options to balance my inbound traffic. I have two connections (one 50Mb and one 25Mb) with partial BGP routes across two routers that I would like to move from an active/standby model to a more active/active model. Our organization moves very little information out of our forward facing precessence servers so outbound balancing is not as important. Almost 80% of our inbound traffic is VPN as well so using application discovery isn't that important either. Some specific questions I have are: Is OER aware of traffic-shape or bandwidth contstraints that are applied to an interface? Does OER simply add prepending for my advertised routes to my upstreams or does it actually prepend AS from inbound providers to move specific traffic from an AS to one of my underutilized connections? Does OER have to ability to control inbound traffic on a subnet level within the same AS? We receive a ton of data from a few AS numbers, so simply moving a single AS to a different connection may not be extremely effective. Thanks. Dylan Ebner
On Jul 14, 2010, at 9:55 PM, Dylan Ebner wrote:
I should look for other options to balance my inbound traffic.
Beyond the binary choice to advertise or not to advertise a given prefix via a given peer/upstream and/or any TE policies your peers/upstreams may support via community/attribute tagging, you've really no control over inbound traffic path selection. You can prepend, but whether other networks honor it or ignore it - or if they do honor it, *how* they honor it - is entirely beyond your control. So, vendor marketing claims aside, the concept of 'load-balancing' inbound traffic isn't really a valid one. The only actual path-selection control you have is over your outbound traffic, and that only for a single hop beyond your network, into each of your peers/upstreams. What happens after that is beyond your control, as well. ----------------------------------------------------------------------- Roland Dobbins <rdobbins@arbor.net> // <http://www.arbornetworks.com> Injustice is relatively easy to bear; what stings is justice. -- H.L. Mencken
participants (2)
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Dobbins, Roland
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Dylan Ebner