Show Command Output

You can view a projection of your providers’ bills for the current month at current usage rates, using the show link billing command (all usage rates are in megabits per second):

Avaya_ANS> show link billing link_A
 

 
Link: link_A
 
Period Covered: 06/13/02 - 06/13/02 ** not a complete billing period
 
Contract type: Burstable
 
Billing Calculation Formula: percentile-max-inbound-outbound
 
Maximum Sample to date: 0.21
 
Minimum Commit:         0 M
 
Projected Billing tier: .1 M (0.21 calculated)
 
Minimum Billing tier:   .1 M (0.21 calculated)
 
Samples taken to date:
 
  Sampled:   17
 
  Remaining: 7
 
  Total:     24
 
Projected Cost: $1000 (at current data rate through end of cycle)
 
Minimum Cost:   $1000
 

 

The example output contains the following information:

• Link--identifies this block of the output as a projection of the bill that can be expected from the service provider represented in the CNA configuration as link_A (there will one block for each link, unless you specify a link name when you enter the show command)
• Period Covered--shows the period covered by this report, from the beginning of the billing period, as defined in the CNA configuration by the command usage-reporting billing-period, through the current date (the period will almost always be incomplete, since as soon as one period ends the next begins; use the snapshot Link Billing report to view reports for complete billing periods)
• Contract type--either burstable (if there are multiple usage-reporting cost commands in the configuration, representing multiple usage tiers) or fixed (single contracted rate)
• Billing Calculation Formula--the method used by your service provider to calculate the bill, as defined in the CNA configuration by the usage-reporting formula command
• Maximum Sample to date--the single highest usage sample obtained to date by the CNA link monitor for this link during the current billing period
• Minimum Commit--the minimum usage rate you are committed to purchase from this provider, as defined in the CNA configuration by the bandwidth parameter of the usage-reporting cost command (smallest value if there are multiple tiers)
• Projected Billing tier--the usage rate at which you will be billed according to the CNA system’s calculations, based on usage to date
• first number is the tier boundary rate entered into the configuration by the usage-reporting cost command
• second number (labeled calculated) is the rate calculated by the CNA system based on usage rates obtained by the link-monitoring process, the billing calculation formula, and the percentile entered into the CNA configuration by the usage-reporting percentile command
• Minimum Billing tier--the lowest possible tier for this month based on current usage and the configured percentile; once your usage rate has penetrated a tier boundary the maximum times allowed by the percentile number, you are committed to pay for at least that tier for the billing period
• Samples taken to date--the number of usage samples obtained from the router’s SNMP agent during the current billing period; the number shown as Total is based on the interval specified by the polling usage interval command spread over the length of the billing period
• Projected cost--the dollar amount of the projected bill, obtained from the dollars parameter of the usage-reporting cost command that defines the projected billing tier
• Minimum cost--the dollar amount of the lowest-possible bill for the period, obtained from the dollars parameter of the usage-reporting cost command that defines the minimum billing tier

Here is an example of a linear billing tier:

Link: spalhlr1
 
Period Covered: 09/01/02 - 09/27/02 ** not a complete billing period
 
Contract type: Burstable
 
Billing Calculation Formula: avg-max-inbound-outbound
 
Maximum Sample to date: 17.6 M
 
Minimum Commit:         3 M
 
Projected Billing tier: 12 M (10.34 M calculated )
 
Minimum Billing tier:   not applicable to billing formula
 
Samples taken to date:
 
  Sampled:   7608
 
  Remaining: 1032
 
  Total:     8640
 
Projected Cost: $1,190.41 (at current data rate through end of cycle)
 
Minimum Cost:   not applicable to billing formula
 

Here is the configuration for this link:

link spalhlr1
 
  ...
 
  usage-reporting formula avg-max-inbound-outbound
 
  usage-reporting cost 3 1000
 
  usage-reporting cost 6 10 per-mbps offset 10
 
  usage-reporting cost 9 20 per-mbps offset 20
 
  usage-reporting cost 12 30 per-mbps offset 30
 
  usage-reporting cost 15 40 per-mbps offset 40
 
 end
 

Here is how CNA calculates the cost:

First the bandwidth percentile is calculated (in this example, the percentile value from the configuration is not used because the formula is avg-max-inbound-outbound). All billing rate bandwidth values (inbound and outbound) for the time period covered are retrieved from the billing rate rrd file for this link. For each sample time, the greater of the inbound and outbound rate is taken, then all these values are averaged. The result in this case is 10.347 Mbps.

Next, the correct billing tier is determined - in this case it is the 12Mbps tier. In order to do this, the CNA system will need to calculate the cost for the previous tier to use as a base cost (if the previous tier is also a linear billing tier, then that tier’s cost will also need to be calculated, and so on).

Now the base cost is determined for each tier, starting at the lowest tier. Then this base cost is used in the calculation for the next tier’s cost:

baseCost = 1000.00 + 0.00

baseCost = 1000.00

baseCost = 1000.00 + ((6.0 - 3.0)*(10)) + 10

baseCost = 1040.00

baseCost = 1040.00 + ((9.0 - 6.0)*(20)) + 20

baseCost = 1120.00

baseCost = 1120.00 + ((10.347 - 9.0)*(30)) + 30

baseCost = 1190.41

With per-mbps-ceiling, the cost would be:

baseCost = 1120.00 + ((11.0 - 9.0)*(30)) + 30

baseCost = 1210.00

With per-mbps-truncate or per-mbps-round, the cost would be:

baseCost = 1120.00 + ((10.0 - 9.0)*(30)) + 30

baseCost = 1180.00