Can Cacti monitor Gigabit Speeds???

[chanakaw]

Dear ALL

I use cacti to monitor performance on gigabit ethernet speeds 1G-10G

but i observed that cacti doesn't graph for speeds above 800Mbps with SNMP v2 and 64bit

Please tell me is there anyone who measure performance data on gigabit interfaces(above 800Mbps)??

Any additional fine tunning required for higher speeds???(above 800Mbps) other than default configuration


Chanakaw

[BSOD2600]

Yes, it can. Although, it sounds like you're going to have to use the 1 minute polling patch and/or Boost plugin. Typically snmpv2 and 64bit graph templates work for most.

[chanakaw]

Is it necessary to install either 1 minute polling patch or Boost plugin ???
coz MRTG works fine even with 5 minutes polling

what would be the difference here with cacti??

my idea here is to monitor OC192 interface- 10G-will this work with Cacti?

chanakaw

[BSOD2600]

Please post a graph of the problem you're experiencing. Additionally, you might want to read through http://docs.cacti.net/node/283.

[chanakaw]

Hi BSOD2600

In the attached graphs cacti doesn't graph for values more that 800Mbps

I m graphing with SNMP2 and 64bit data source

I haven't install either 1 minute polling patch or Boost plugin...

so please he to fix the problem

chanakaw

[shull]

What does your MAX value look like in the Data Source Item?

[chanakaw]

IN Data Source

under RRA

Consolidation Functions
How data is to be entered in RRA's. --- AVERAGE
MAX

Is this U R referring to or if not how to check


Chanakaw

[chanakaw]

Hi Shull

sorry i got it wrong in my previous response

yeah under data source MAX value is 100000000 is this value in bits??

then this value is 100M ??? but cacti already measures values up to 800M on this interface


chanakaw

[shull]

It depends on the data you are receiving from the host. Check how your data is sent, bits or byte or packets or whatever. You should be able to find it from the MIB.

If it is coming in as bits, you may want to do a CDEF to convert it to bytes before you graph it. First check how your data is coming in from the host. An snmpwalk or snmpget won't tell you whether it is bits or bytes.

-Stephen

[chanakaw]

Hi Shull

I checked Cisco Juniper Documentation and found that data is coming in terms of bits.

how to convert bits to bytes using CDEF

chanakaw

[shull]

Check under your Graph Template Item. You should see a CDEF there (at least there is one in the CactiEZ installation) to convert bits to bytes. If you don't have it, make a request here and either I or someone will post the CDEF.

-Stephen

[cflong]

If you are seeing a limit of 100,000,000 in the data template/source, that is causing the error. SNMP is returning octets (bytes), so your upper limit for bits/s would be 8 times that value. In this case 800mb/s.

You will probably also need to adjust the max size in the rrd file with the rrdtune commnad.

[TheWitness]

1) 10G Interfaces can be tracked, but not without changes to the Standard Interface Data Template
2) You must use SNMPv2 and 64-bit Counters
3) You MUST adjust the max value in the Data Template (I would just create a new one, but it's a lot of work)
4) If you already have graphs you want to keep, you can use the RRDtool tune command to increase the Max value in the RRDfile.

TheWitness

[chanakaw]

Hi shull

Now I have CDEF Turn Bytes into Bits

will this automatically converts or still there any additional configs required???

chanakaw

[TheWitness]

Please "reread" my post.

TheWitness