IP Nbar setup

[raymk1973]

hi,

we have recently had a 50 mb link installed from our office to  a remote site

currently the 50 mb link is being saturated by some replication traffice that i would like to limit.

having no experience in qos what so ever. i could really do with some pointers.

my basic understanding of qos is that if i wanted to limit the replication traffic i could use nbar.

the source of replication traffic comes from our main office  and crosses a 50 mb link , currently this link is being saturated by this replication traffic

Can any one advise on how i can go about limit the amount of bandwidtth this traffic is using.

main office switch configuration cisco 6500 switch

ip nbar port map custom-01 tcp  3260

class-map  match -all nbar

class-map match-all custom-01

match protocol custom-01

i have configured the above on our main switch

the bit im stuck with is how i restrict  the bandwith to the replciation traffic to use 50% of the link

i have read on the cisco web site to use shape average command but this doesnt appear on the ios for the 65000

any help appreciated

thanks in advance

ray

[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.

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In  no event shall Author be liable for any damages whatsoever (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

QoS features, on 6500s, can be rather limited if you only have "LAN" type of line cards.  If that's all you have, and you're running a physical link with a provider bandwidth cap, you could use an ACL to match against your replication traffic and police it.  If you had full port bandwidth, you could direct your replication traffic to a hardware egress queue with a low bandwidth allocation.  (On 6500s, QoS capabilities also vary per line card.)

An alternative solution, would be to place another device on this link (between it and the 6500) that offers better QoS features.

[raymk1973]

hi and thanks for the speedy reply.

the alternative would require down time

the acl option would help out on a temp basis.

we have a mixture of gigabit interfaces and 10/100 intefaces on the 6500 switch

The acl route sounds like it would solve this issue.

how does one create an acess list to prevent this traffic exceeding a given amount of bandwidth.

[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 whatsoever (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

http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps708/white_paper_c11_538840.html

http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps708/prod_white_paper0900aecd803e5269.html

http://www.cisco.com/en/US/products/hw/switches/ps700/products_tech_note09186a00801c8c4b.shtml

http://www.cisco.com/en/US/products/hw/switches/ps708/products_tech_note09186a008074d6b1.shtml