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Nexus 7K rate-limiting QoS

Steve Coady
Level 1
Level 1

All

 

I have 2 sets of server that replicate over a WAN link.  I would like to limit the bandwidth to 10mbs for these servers only. 

The servers reside on the 10.1.6.0/24 and 10.4.6.0/24 subnets

 

The N7K and the Cisco 6500 both connect directly to the WAN link.  I’m not sure how I should accomplish this on the N7K.

 

Please advise.

sMc
2 Replies 2

Steve Coady
Level 1
Level 1

Does anyone have any guidance to share on this? The Nexus 7k line card is N7K-F248XP-25. Not sure how much the line card type would matter.

 

 

sMc

More info

 

It looks like I need to create a CUSTOM QUEUE and then apply that custom queue to a specific interface. I still don't get how define a subnet for this queue. The xample given does not make sense at the moment.

 

example given

 


Create a Custom Queuing Policy

In order to create a custom queuing policy, complete these steps:
1. Create a custom queuing policy with the desired queue limit and bandwidth allocation.
2. Modify the global queuing class−maps to create the needed CoS to queue mapping.
3. Apply the new queuing policy to the appropriate interfaces.

Consider an example for M132 modules that have a 1p7q4t queuing architecture where all 8 CoS values are
mapped to a separate queue. The output shows the custom queuing policy along with the changes to the global
queuing class−maps:

policy−map type queuing 10G_POLICY
class type queuing 1p7q4t−out−pq1
priority level 1
queue−limit percent 10
class type queuing 1p7q4t−out−q2
queue−limit percent 10
bandwidth remaining percent 10
class type queuing 1p7q4t−out−q3
queue−limit percent 5
bandwidth remaining percent 5
class type queuing 1p7q4t−out−q4
queue−limit percent 5
bandwidth remaining percent 5
class type queuing 1p7q4t−out−q5
queue−limit percent 10
bandwidth remaining percent 20
class type queuing 1p7q4t−out−q6
queue−limit percent 5
bandwidth remaining percent 10
class type queuing 1p7q4t−out−q7
queue−limit percent 5
bandwidth remaining percent 10
class type queuing 1p7q4t−out−q−default
queue−limit percent 50
bandwidth remaining percent 40
!

! voice
class−map type queuing match−any 1p7q4t−out−pq1
match cos 5
! scavenger
class−map type queuing match−any 1p7q4t−out−q2
match cos 1
! transactional
class−map type queuing match−any 1p7q4t−out−q3
match cos 2
! call signaling
class−map type queuing match−any 1p7q4t−out−q4
match cos 3
! video
class−map type queuing match−any 1p7q4t−out−q5
match cos 4
! routing
class−map type queuing match−any 1p7q4t−out−q6
match cos 6
! management
class−map type queuing match−any 1p7q4t−out−q7
match cos 7
! best effort
class−map type queuing match−any 1p7q4t−out−q−default
match cos 0

The final step is to apply the custom queuing policy to each 1p7q4t interface:
    interface Ethernet8/1
    service−policy type queuing output 10G_POLICY

 

 

 

sMc