All of us who work on routers and switches have had to do a show interface command. Some of the information we gleam form that command is straight forward. Other little tidbits aren’t quite so forthcoming with their purpose or meaning. This is the case with teh reliability x/255 txload x/255 and rxload x/255. If your like me you have learned over time the reliability of 255/255 is good and much of anything in txload and rxload is bad. Well thanks to NetPro Forums and Cisco Docs here is the answer. Enjoy.Reliability 255/255= 100% up and reliable

128/255 = 50% up and not-so reliable

txload 1/255 = 0-4% of traffic is coming from transmitted info. 128/255 would mean 50%of traffic is coming from transmitted info.

rxload is the same as tx except it’s received data.

These values are kind of a high level dashboard on what the interface is doing in regards to traffic. EIGRP Metrics are designed to use the reliability information, but is rarely implemented.

FROM CISCO

Reliability of the interface as a fraction of 255 (255/255 is 100 percent reliability), calculated as an exponential average over 5 minutes.

txload/rxload=Load on the interface as a fraction of 255 (255/255 is completely saturated), calculated as an exponential average over 5 minutes.

what is the exponential factoe here? is it base 2,base 3,base 8 ot else?

No Idea. I was just re-publishing data. I use this site as a scratch pad for me and others. So sorry wish I could give a better answer. You might want to post this question in the NetPro forums on Cisco.com

what is the exponential factoe here? is it base 2,base 3,base 8 ot else?

No Idea. I was just re-publishing data. I use this site as a scratch pad for me and others. So sorry wish I could give a better answer. You might want to post this question in the NetPro forums on Cisco.com

1. Looks like every factor of 4 equals roughly 1.5%

2. So, 255=100%, 128=50%, 64=25%, 32=12%, 16=6%, 8=3%, 4=1.5%

3. If TXLOAD shows 47/255, then you’re looking at 18% (values 32+8+8)

or (12.5%+3%+3%=18%)

1. Looks like every factor of 4 equals roughly 1.5%

2. So, 255=100%, 128=50%, 64=25%, 32=12%, 16=6%, 8=3%, 4=1.5%

3. If TXLOAD shows 47/255, then you’re looking at 18% (values 32+8+8)

or (12.5%+3%+3%=18%)