I am attempting to gather some statistics on an 192 Kbps ISDN link to prove that it needs to be upgraded. I can use the sh interfaces bri/n command to get snapshots but is there some way I can compile statistics over a period of time?
You can use an SNMP manager to gather the IfOctetsIn an IfOctetsOut with an interval of one minute or so. This will give you the average bytes in and out per minute or whatever interval you choose.
The more difficult way is to clock the interval and read the interfacecounters manually. After a clear counters, you can read the values after a certain time and calculate an average over that period of time. The first 24 hours after clearing interface counters, the amount of time that has elapsed since the clearing is indicated fairly precise (minutes) In that way you can make a good calculation.
btw: 192kbs for an ISDN link is pretty fast. Where can you get those?
1.Is there some new ISDN standard I haven't been told about?
2.Why does it need to be upgraded? has user performance using this link been affected?
If you can: Configure two workstaions with WSFTP PRO on either sides of the ISDN link, prepare or conjure up a file that is approximately 192000 bits in size.
Send the file across the ISDN link.
If your ISDN link is bad then your millisecond time frame will be uneven on both sides of the link.
Check with your local DNC to check if the link is receiving errors on their ISDN TA-1,if there are frames being dropped or low performance on the DNC side, have the circuit diapatched. It is cheaper to have a circuit dispatched than to find out it cost more to be upgraded.
[toc:faq]The ProblemOn traditional switches whenever we have a trunk
interface we use the VLAN tag to demultiplex the VLANs. The switch needs
to determine which MAC Address table to look in for a forwarding
decision. To do this we require the switch to do...
[toc:faq]Introduction:Netdr is a tool available on a RSP720, Sup720 or
Sup32 that allows one to capture packets on the RP or SP inband. The
netdr command can be used to capture both Tx and Rx packets in the
software switching path. This is not a substitut...
IntroductionOSPF, being a link-state protocol, allows for every router
in the network to know of every link and OSPF speaker in the entire
network. From this picture each router independently runs the Shortest
Path First (SPF) algorithm to determine the b...