[nsp] 6509 + MFSC2 + CAR ?

[Jason Lixfeld]

There was a thread about this yesterday.  From that thread:

6500 does not do any *shaping*, it does policing/rate limiting. In other
words, we won't "smooth out a bursty flow" by buffering traffic, we
basically put a hard cap on usage.

Both sup1 & sup2 support *ingress* policing only, and you need to make
sure you are using the right combination of CLI commands to accomplish
this, otherwise it won't work or won't work as expected. There should be
some example configs on cisco.com in the support area, or use the config
guide (which admittedly can be a bit hard to follow).

Sup720 supports ingress & egress policing, but do note on egress that it
is aggregate policing only and only on a per-routed (L3) interface or
per VLAN basis only, *not* on a per-Layer 2 switch port basis.


On Feb 4, 2004, at 1:28 PM, Richard J. Sears wrote:

> Hello Everyone,
>
> I have spent a bunch of time reading all the entries I could find 
> pertaining
> to 6509's and CAR. Several people have claimed to
> get it working:
>
> ***snip***
>
> ...but I know a number of people who use 6500s+MSFCs solely for the
> purpose of utilizing CAR to traffic-shape their customers
> and they're all quite pleased.
>
> ***snip***
>
> and yet other claim Cisco told them it would not work at all due to
> the PFC.
>
> I am looking for someone who can tell me if CAR will work on 6509's
> and if they have it working, exactly how they got it to work. I see
> some references to policers on the PFC as a work around, and would
> like more information on that if someone has it.
>
> Here is my config that I am trying to make work:
>
> (CEF is enabled on the port and on the switch)
>
>
> interface FastEthernet3/5
>  description Connection to Chris's Office Linux Box
>  ip address 10.10.50.1 255.255.255.252
>  rate-limit input 1000000 50000 50000 conform-action transmit
> exceed-action drop
>  rate-limit output 1000000 50000 50000 conform-action transmit
> exceed-action drop
>  load-interval 30
>  no cdp enable
>
> Hence to say, that I can merrily download via ftp from that box at 10
> to 15mbps all day long and a sh int rate-limit does not show any hits.
>
> My goal is to rate-limit colo customers attached to our 6509 switches,
> and any help would be greatly appreciated.
>
> Our 6509's are configured with Sup1A w/MFSC2s and 256MB RAM each. We 
> are
> running IOS only on the 6509's (no Cat Code).
>
> My goal is to rate limit my colo customers both inbound and outbound so
> they cannot use more bandwidth then they want and hence not get a huge
> bill.
>
>
>
> Any help would be greatly appreciated.
>
> Thanks
>
>
> ******************************************
> Richard J. Sears
> Vice President
> American Digital Network
> ----------------------------------------------------
> rsears at adnc.com
> http://www.adnc.com
> ----------------------------------------------------
> 858.576.4272 - Phone
> 858.427.2401 - Fax
> ----------------------------------------------------
>
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> from the tyranny of petty things . .
>
>
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>
>
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