Classification&Marking

[Deepak Kumar Sharma]

Suppose there is a company ALZT, and their main service to provide seedboxing.

They have 3 Nexus switches connected to server farm. And they deploy IP Phones also but their main motives is to provide seed box.

What will be the marking value for their environment.

Nexus sw connected to routers and router connected to cloud(internet) with 100GBps link(GBps) bundled.

And on server farm they created 3 VLANs

VLAN1 gold

VLAN2 silver

VLAN3 starter

they want to give higher priority to servers which resides in VLAN1 then VLAN2 and at last VLAN3 because on VLAN3 servers they host free demo user account.

[Marcus Ueda]

this is a question?

i know in DC enviorment the Qos is like:

5 platinum - voice

4 gold - video

3 silver - mission critical

2 bronze - regular data

1 best eff

0 no priot - scavenger

normally FC - Mission crit

but in your scenario i duno how i apply that...

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Marcus S. Ueda

CCDA

[Vishal Sharma]

Not enough information to provide complete solution but here is my try based on some assumptions:

Since you mentioned we have IP Phones, I suppose they are using Call Manager etc over Internet (on same link) therefore we need to mark voice traffic (however small) otherwise IP phones won't work on a link choked with 100Gbps of data (seedbox) traffic.

So, I will create a Priority (LLQ) queue for voice payload traffic and a CS for signalling and assign b/w based on number of concurrent calls expected and codec. Assuming a small DC with 3 nexus, IPT traffic will be small though and you will still have huge b/w for other traffic.

Now, for Seedbox traffic (3 vlans), I will use CBWFQ (with WRED)
1) Vlan 3 Starter: Since this is demo user account, I will put this in Class Default and assign a minimum bandwidth based on expected traffic volumes. I wanted to put it in scavenger and assign a very low b/w, but demo should not be discouraging for potential business.

2) Vlan 2 Silver: This should get AF21

3) Vlan 1 Gold: This should be my data priority traffic with AF41/AF31

The distribution of b/w will really depend on how much traffic you are expecting for these classes. Since we don't need markdown within classes so we can use class selectors (CS) as well instead of Assured Forwarding (AF) values for marking.

Note: Though all this exercise will only provide some reservation on local loop, There's no QoS over Internet.

My 2 cents
Vishal