Edit Interface capacity (b/w) of router (cisco) device

[vinods99in]

Dear All,

Am new to cacti, have just installed it on Ubuntu 8.04 and it works fine!!

As you must be aware MPLS links are generally terminated on Ethernet or Fastethernet interface of the routers, having capacity in range of 10/100/1000Mpbs but the actual link maybe only 10 or 20Mbps

So the graphs (utilization etc.) are displayed with respect to the interface bandwidth capacity (i.e 10/100/1000Mbps). but actually the utilization and other parameters should be displayed wrt actual bandwidth (10 or 20M).

Kindly advice if the interface bandwidth can be edited to reflect the actual.

Thanks in advance.

Vinod

[gandalf]

Cacti by default uses ifSpeed as a max value.
You may copy the standard templates and replace the ifSpeed templating by manually entering the line's max speed at time of graph creation.
Reinhard

[vinods99in]

Dear Reinhard

Thanks for the prompt, will try the same and revert back to you.

Thanks

Vinod

[fmerrill]

This is a bit old, but, the easier way is to adjust the bandwidth statement on the interface itself if it is a Cisco device. (other manufacturers devices may have a similar function/command)

The bandwidth statement in no way affects or controls interface speed, but is there for use by routing protocols that make decisions based on such, or in this example, when you have a hand-off on an interface that is technically much higher than the actual bandwidth available. It does allow the real bandwidth to be calculated no matter what SNMP monitoring tools you use.

This is common on rate limited interfaces, and on MAN services delivered on 100Mbs or 1Gbs interfaces, but where the actual provisioned bandwidth is much lower.

A benefit to putting it onto the actual interface configuration on the device is that any monitoring tool will then get the actual number it needs without having to modify a device or interface record within that tool.