We need connect our two data centers to 3 other remote sites via two ISPs MPLS WAN. Each ISP pipe will be running 200Mbps. Basically we have 4 classes of traffic, Email, Images, VOIP/Vedio and Others. Email and Images are heavy traffic. which of the following could be the better solution?
1. Split the traffic into two IPSs WAN pipes, such as Email and Images go to ISP A and the rest go to ISP B.
Using QoS and both ISPs, I believe, is the better solution than spliting type of traffic across different paths. One reason, dealing with an ISP failure.
Actual QoS solution depends on whether your traffic flows logically across a mesh, and if it does, whether your MPLS vendors support a QoS model. Most should, although you may need to request it, select it (from various profiles), and perhaps pay extra for it.
"1. From maintenance and troubleshooting perspective, lots of people said Load Balance is hard to monitor and trace traffic. Is it worthy?"
I guess that depends much on the capabilities of the people involved and just what the configuration required. I've never thought using something like PBR to split different traffic across different paths particularly simple especially when dealing with path failures.
If someone was thinking of dynamic load balancing using OER or PfR, that does raise the complexity, although just interface load balancing isn't too complex.
Routing options depend on what routing you're doing. You could have something as simple as two static defaults routes, one pointing to each vendor.
IGPs like OSPF and EIGRP support equal cost multiple paths. The latter also supports unequal cost paths.
BGP could be an issue; although it supports multiple paths, there are multiple condidions involved it getting it to use more than one.
If you have two WAN routers, GLBP could split the outbound gateways.
We are pleased to announce availability of Beta software for 16.6.3.
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Introduction Featured Speakers Luis Espejel is the Telecommunications
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