Qos and shape for different bandwith

[dijix1990]

I'm interested, is it possible to make qos rules for some branches which have different channel bandwith? 

For example, 

5 branches with two isp's (30mbit per isp)

3 branches with two isp's (50mbit per isp)

3 branches with two isp's (100mbit per isp)

I want to implement qos for branches (for traffic from branches to dc) 

Is it possible to use qos which will be depend from bandwith isp? Maybe some examples? 

[dijix1990]

Or one question, maybe anybody know for what we can enable feature "cloud qos" on the local policy? Is it only for cloud edge? 

[Joseph W. Doherty]

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@dijix1990 wrote:

I'm interested, is it possible to make qos rules for some branches which have different channel bandwith? 

Usually, yes.

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@dijix1990 wrote:

I want to implement qos for branches (for traffic from branches to dc) 

Is it possible to use qos which will be depend from bandwith isp? Maybe some examples? 

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Unsure what you mean by "depend" on ISP's bandwidth.

As for examples, as QoS features can vary much between platforms, what specific platforms do you have in mind?

[dijix1990]

Unsure what you mean by "depend" on ISP's bandwidth.

 QoS should devide bandwith in terms of isp channel as example (on the velocloud) I set bandwith on the uplink 30mbps and qos sees bandwith and devide it between different classes for example class 0=50%=15mbps / class 1=50%=15mbps, isp increase channel to 60mbps and I chande bandwith to 60mbps on the uplink interface and qos automatically adjusted to new bandwith

As edges I use isr4000/isr1000/isr8300/c8000v

[Joseph W. Doherty]

If you use percentage based statements, proportions are maintained.

However, unless port is physically running at ISP bandwidth, for egress QoS to be effective, you'll need to have a parent policy with a shaper for the ISP bandwidth allocations, and, I don't recall, a way to have the shaper "know/use" actual ISP bandwidth.

[MHM Cisco World]

Check below 

MHM

[dijix1990]

So, You mean for every transport I need to use shaper policy and after devide trafic via QoS police and percentage?

[MHM Cisco World]

https://www.cisco.com/c/en/us/td/docs/ios-xml/ios/qos_plcshp/configuration/xe-3s/qos-plcshp-xe-3s-book/qos-plcshp-pct-shp.html

https://www.cisco.com/c/en/us/support/docs/quality-of-service-qos/qos-policing/19645-policevsshape.html

There are two approaches' I think using percentage meanly use for class based. Here you want to shaped all traffic.

MHM

[dijix1990]

I know the difference, I use it a lot in my legacy environmet, I asked about SD-WAN because it has very weird instructions and examples. Veloclud (VMWare sdwan) has very flexible QoS implementing and I would like to know if the cisco sdwan has the similar behaviour - For example If I set the bandwidth on the interfaces, like this

interface Vlan100
 description -E- ### Internet channel
 bandwidth 40000

and apply QoS policy on the velocloud so QoS grab bandwidth to use it for policing.

From documentation for Cisco SD-WAN I understood that before I need to set shaper bandwidth and after aplly QoS policy that will depend on shaper bandwidth

[Joseph W. Doherty]

Oops, BTW, I missed noticing your OP's SD-WAN tags and the forum your question is within.  My replies were intended for a non SD-WAN environment.  Unfortunately, I'm unaware of what SD-WAN supports vis-a-vis QoS.

[Joseph W. Doherty]

BTW, in your first reference, it's unclear what the shaper uses for its percentage basis, i.e. physical interface bandwidth or interface bandwidth statement.

Ideally it would allow bandwidth statement to override physical interface statement but from a maintenance perspective you would still need to maintain the interface bandwidth statement.

Cisco does have one auto bandwidth shaper for (some) DMVPN.  Possibly Cisco provides a similar feature for SD-WAN.

[dijix1990]

I mean interface bandwidth statement

interface Vlan100
 description -E- ### Internet channel
 bandwidth 40000

[Kanan Huseynli]

Hi,

configure shaper under physical transport interface.

And you also may have QoS Map which will work based on shaper:

Example in CLI will be:

policy-map QoS_MAP > QoS Map created in local data policy
class Queue0
priority level 1
police rate percent 30
class class-default
bandwidth remaining ratio 70
random-detect

policy-map shape_GigabitEthernet0/0/1
class class-default
shape average 30000000 > shaper value (manually typed)
service-policy QoS_MAP > QoS Map name (references QoS_Map created above in local policy)

[MHM Cisco World]

@Joseph W. Doherty  The sdwan is another story' there is two service and transport' so we need check where we apply qos under vpn0 or other.

@dijix1990  I will check and update you.

MHM