[c-nsp] How to set port bandwidth on CatOS

Dale Shaw dale.shaw+cisco-nsp at gmail.com
Wed Dec 17 17:17:58 EST 2008

Hi Everton,

On Thu, Dec 18, 2008 at 5:08 AM, Everton Diniz <notrevebr at gmail.com> wrote:
> How can i set bandwidth on Sw running CatOS?
> Like IOS:
> int f1/1
> band 10000

The "bandwidth" command in IOS doesn't actually change the bandwidth
of an interface -- it's used by other higher layer processes like
routing protocols, queueing etc. For example, you might have an
Ethernet port with an access speed of 100Mbps, but your upstream is
policing on ingress to 35Mbps. In this case, specifying "bandwidth
35000" would likely help other IOS subsystems make proper decisions.

On Ethernet interfaces, it's the "speed" interface command that
changes the interface speed (10Mbps, 100Mbps, 1Gbps, 10Gbps etc.)  To
set duplex, it's the "duplex" command (auto, half, full).

CatOS is a L2 switching operating system - no L3 support - and
therefore does not have an interface command equivalent to
"bandwidth". Routing on CatOS-based systems is handled by a separate
module, which, not surprisingly, runs IOS.

The equivalent speed and duplex commands in CatOS are: "set port speed
.." and "set port duplex .."


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