nanog mailing list archives
RE: Cisco SLA data access via SNMP?
From: "Ray Burkholder" <ray () oneunified net>
Date: Wed, 15 Nov 2006 18:08:42 -0400
I've been using Cricket along with GenDevConfig_2_0 from http://www.acktomic.com/cricket/cricket-genRtrConfig.htm to collect and plot cisco SAL status. I have had to make some changes to their scripts to accept some of Cisco's recent changes. I can get the changes posted in the next day or two.
-----Original Message----- From: owner-nanog () merit edu [mailto:owner-nanog () merit edu] On Behalf Of nealr Sent: Wednesday, November 15, 2006 17:58 To: nanog () merit edu Subject: Cisco SLA data access via SNMP? Ray, Do you have an example of accessing the SLA data via SNMP? I've just got interested in those things, I've found the OIDs required, but its all a bit of a maze ... I could really use some jitter information in a couple of places right about now ... Neal Ray Burkholder wrote:If you have Cisco routers on either end, use the built inSLA capability.It will give you ongoing abilty to trace latency, loss, jitter. It won't tell you bandwidth, but will give you a set ofmetrics for traffic quality.Do a full mesh between all your edge devices and it mighthelp trackwhere in the middle your issues reside. The SLA tools are pretty standard to Cisco devices and so should give you an edge in getting people to listen to you.-----Original Message----- From: owner-nanog () merit edu [mailto:owner-nanog () merit edu]On BehalfOf J. Oquendo Sent: Wednesday, November 15, 2006 16:20 To: Kuechel, Mark Cc: nanog () merit edu Subject: Re: Network Connectivity... Dealing with Providers Kuechel, Mark wrote:Sounds like you are trouble shooting a VoIP issue severalnetworksremoved from the actual user. First step is to get intotheir networkvia telnet and start from there. Is this a jitter issue onsome or allcalls? Has the customer done a traffic study on their ownLAN to seeif there is not some sort of congestion there? Pings fromafar are notused to trouble shoot issues in depth: Lots of posting onthis. Hasthe clients Bandwidth utilization been looked at to theirprovider?Give us more.Pings and traceroutes weren't the only tests I've done. Here is my capacity when dealing with this client: When something happens and I need to do some VoIP related stuff (extension changes, etc), I mainly log in via SSH from one of four points, a DSL connection CTTEL, Level3, GBLX, and Verio. When my lab's CTTel DSL connection fails I jump on a DS3 (GBLX), when that fails, I jump on to a machine inTexas and mostof the times one of them is going to let me in. Now, I have had failures from two points to all points at sporadic times.So I do theobvious traceroutes, pings, etc.. Now a provider can bequick to tellme "check your line" but come on now... 4 different linesare failingto connect here. (This doesn't include the fact that if I can't get in...What makesyou think voice data is getting in?) So, for my testing, I'm doing a functional (its fugly)test from allfour locations to my client, and from my client to allfour. My datais going to be a collection of ping tests, traceroute test (tcptraceroute), bing test, etc.... I was hoping to getfeedback onother tools... I have Radarping as well but don't feellike using it.I want to be able to leave something running 24x7 untilFriday. I'dlike for it to be opensource so the provider doesn't cry "your network voodoo tools don't count!". I want to be able togo back andsay "Listen these tools are industry standard tools from CAIDA (or elsewhere), and they're used by engineers all across theboard. I'vedone a fair test and its obviously coming from your network.." So to answer your bandwidth question, bandwidth (according to the provider) is under 50% capacity with "sporadic spikes" as their engineers have seen while on the phone with them. Sporadic means nothing to me. I have a 63% packet loss which means even if I was equipped with an OC768, the bandwidth meansnothing ifthe packets aren't going through. "Here's your LamborghiniMurcielagoSir. It does 200mph. Although from time to time you'll only do 126mph..." Traffic internally, I've put on QoS maps, but with or without them same errors occur. It's not an issue ofechoes, its moreof calls to specific DID's dropping, not going through, caller can hear - receiver can't. All the while some lines work,others don't.Couple this with my Nagios test going bonkers - Iconfigured Nagiosto monitor from my client to Google, Yahoo, MSN and I can see loss from here to the outside world so it's twofold. Short of my client running me over with his FX45, I'm even running out ofpatience withmy client's provider. -- =+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+=+ J. Oquendo echo @infiltrated|sed 's/^/sil/g;s/$/.net/g' http://pgp.mit.edu:11371/pks/lookup?op=get&search=0x1383A743 "How a man plays the game shows something of his character- how heloses shows all" - Mr. Luckey -- Scanned for viruses and dangerous content at http://www.oneunified.net and is believed to be clean.-- Scanned for viruses and dangerous content at http://www.oneunified.net and is believed to be clean.
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Current thread:
- Network Connectivity... Dealing with Providers J. Oquendo (Nov 15)
- <Possible follow-ups>
- Re: Network Connectivity... Dealing with Providers J. Oquendo (Nov 15)
- RE: Network Connectivity... Dealing with Providers Ray Burkholder (Nov 15)
- Cisco SLA data access via SNMP? nealr (Nov 15)
- RE: Cisco SLA data access via SNMP? Ray Burkholder (Nov 15)
- Re: Cisco SLA data access via SNMP? Vince (Nov 16)
- RE: Cisco SLA data access via SNMP? Ray Burkholder (Nov 17)
- RE: Cisco SLA data access via SNMP? Ray Burkholder (Nov 17)
- Re: Cisco SLA data access via SNMP? Jake Khuon (Nov 17)
- RE: Network Connectivity... Dealing with Providers Ray Burkholder (Nov 15)
- Re: Network Connectivity... Dealing with Providers J. Oquendo (Nov 16)