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Device search. Part II: Network Requirements II

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We continue with  discussing the network requirements of our data center design.
qfabric

In the Network Requirements Part I we exposed the Juniper network hardware (switch and routers) we thing there are the best option for our case. Now we goon deeper to acomplish specifications.

The network architecture we will use it’s an Unified Fabric, this architecture has one unique Ethernet mesh for IP and Fiber Channel (using FCoE) and its useful to increase the efficiency and reduce the equipment’s.

Refer to the type of design (to accomplish case requirement’s), we opt to do a TIER 3 cpd design implementing Layer 2 and Layer 3 redundancy and separating applications and  data.
In layer 2 part, we implement the top-of-the-rack switch and the aggregation switch with the Juniper QFX3500 solution (QFabric Family):

QFX3500 :

–       48 optical ports 10GBE ( 12 can be 8Gbps FC)

–       4 uplink ports 40GBE

–       Fiber Channel Over Ethernet (FCoE)

QFX3500_diagram

We are studding the possibility to implement a complete QFabric architecture adding a QFabric system Layer 2 device  that offer multiple components working together as a single switch, delivers any-to-any connectivity, high performance and management simplicity.

The QFX family offer a system to avoid the Spanning-Tree, that system is the BPDU (Bridge Protocol Data Unit) and activate and manage the RSTP,VSTP,MSTP protocols. There are also more solutions like VSS and vPC, so  studing further the situation  we will take the best option to avoid missing 50% of ports by STP.

We will use also apply balancing hardware to distribute the network traffic according to bandwidth.

Finally as we told in the part I,  we will use routers of MX Juniper series in the edge network. The model of the edge router is not defined yet, will be defined further looking and adapting the different options to the requirements and budget .

 


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