Split of internet bandwidth

[rickyteo82]

Hi,

My company had acquired a 150M internet bandwidth from a local ISP.

Due to some requirement, we will be sharing the single 150M internet bandwidth with another company.

We will need to spilt the internet bandwidth up into 100M to another company and 50M to us.

May I know what is the term called for performing such bandwidth spilt. And how do I do it on the router?

And for security reason, we do not want the companies to interfere with one another.

Please kindly advise. =) 

[Joseph W. Doherty]

Disclaimer

The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.

Liability Disclaimer

In no event shall Author be liable for any damages wha2tsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.

Posting

Do the individual companies share the same network prefix?  If not, you can identify the company by traffic to/from a specific network prefix.

If they do share the same network prefix, do they use static or dynamic IP allocations?  If static, you can identify company hosts by their particular host IP.  If not, company egress might still be identified by the source port, company ingress, though, will be practically impossible to identify.

[rickyteo82]

Hi Joseph,

Lets assume they are in different network.

How do I specific the specific network to use the appropriate bandwidth?

Do I specify in the class-map? I dont see any option to specify the ip address in class map.

Can you advise me?

With Thanks and Regards,

Ricky 

[Joseph W. Doherty · Accepted solution]

Disclaimer

The Author of this posting offers the information contained within this posting without consideration and with the reader's understanding that there's no implied or expressed suitability or fitness for any purpose. Information provided is for informational purposes only and should not be construed as rendering professional advice of any kind. Usage of this posting's information is solely at reader's own risk.

Liability Disclaimer

In no event shall Author be liable for any damages wha2tsoever (including, without limitation, damages for loss of use, data or profit) arising out of the use or inability to use the posting's information even if Author has been advised of the possibility of such damage.

Posting

If the companies have different network prefixes, you write an ACL to match each, e.g.:

ip access-list extended CompanyX
permit ip 192.168.1.0 255.255.255.0 any
permit ip any 192.168.1.0 255.255.255.0

ip access-list extended CompanyY
permit ip 192.168.2.0 255.255.255.0 any
permit ip any 192.168.2.0 255.255.255.0

Then write class-maps to match the ACLs, e.g:

class-map match-any CompanyX
match access-group name CompanyX

class-map match-any CompanyY
match access-group name CompanyY

Then use the class-maps in the policy-map, e.g:

policy-map sample

class CompanyX
shape or police 100000000
fair-queue

class CompanyY
shape or police 50000000
fair-queue

[rickyteo82]

Hi Joseph,

Cool! I got it! Thanks for the great help! =)

btw.. Wats fair queue for?

Best Regards,

Ricky

[Joseph W. Doherty]

FQ round robins between flow queues, per class, rather than use just one queue per class.  Very useful if you have both low bandwidth and high bandwidth demanding flows sharing a class.

[rickyteo82]

Hi Joseph,

We are using Nexus 5500 L3 switch. I note that we cant perform traffic shaping on Nexus 5500 other than policing.

Other than implement on a router, is there any way we can perform shaping on Nexus 5500?

With Thanks and Regards,

Ricky

[Joseph W. Doherty]

Sorry, I'm not too familiar with Nexus series features.

[jox198501]

Hi joseph

i cand find how to send u private message so if u can answer me here

if a company has a router that provide 100mbps internet connection, and there is a switch with users on it, what is max speed users can get, lets say assuming all 24 ports on switch are active ?and switch have specs to operate on wire speed

====

and 2nd question from ur old post 8 yrs ago :) 

2960g switch (35.7 mpps and 32 gig backplane (full duplex))
"Assuming the 35.7 Mpps is quoted for 64 byte Ethernet frames, it would support 18.3 gig, internally, or 24 gig on the ports." 

What is 18.3 internaly and how did u get it ?? ( i understand 24gig part)

tnx very much in advance

[Joseph W. Doherty]

You didn't note the port bandwidths for your switch, but likely the 100 Mbps Internet connection will be the bottleneck, shared by all active users.  At best a user might get all 100 Mbps.

To your second question, that's accounting for bits being moved w/o Ethernet overhead, i.e. 64/84*24.