Re: SNMP Packet question [7:38824]
I think the rrdtool has some of this built into it...it's a great spinoff of
mrtg... (it's bascialy the engine and you do with it as you please
check out this link.
http://people.ee.ethz.ch/~oetiker/webtools/rrdtool/
and look at so of the graphs people are doing there are also some sample
scripts there!
hth,
-Patrick
>>> "sam sneed" 03/19/02 12:33PM >>>
Hello group,
I am trying to write a script in perl to monitor interface errors and total
traffic during work hours. I'm doing an snmpwalk to get the info. I want the
total amount of packets in and out of an interface so I can calculate the %
of errors on the line.
Cisco says on their site : http://www.cisco.com/warp/public/477/SNMP/5.html
that
ifInNUcastPkts (.1.3.6.1.2.1.2.2.1.12) are counts of inbound broadcast
and multicast packets
ifOutUcastPkts (.1.3.6.1.2.1.2.2.1.17) are counts of outbound
broadcast and multicast packets
besides In and Out whats the difference? I thought Ucast meant unicast and
NUcast meant broadcast and multicast.
When queried, every int gives NUcast and Ucast which are different values.
How could Cisco define them as the same.
Is this a misprint?
Lastly I'm assuming that total packets would be the sum of the 2(unicast +
multicast/broadcast).
Is this assumption correct?
ps i don't want ifOutOctets because i want the # of packets not bytes.
thankd
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RE: SNMP Packet question [7:38824]
You should take a look at Cricket. http://cricket.sourceforge.net/ We use it to monitor traffic on links, router memory/cpu usage. Here's an example of what it can create: http://cricket.sourceforge.net/support/talks/cricket-examples/route-flap/ It uses the RddTool that someone already mentioned. -John sam sneed wrote: > > Hello group, > > I am trying to write a script in perl to monitor interface > errors and total > traffic during work hours. I'm doing an snmpwalk to get the > info. I want the > total amount of packets in and out of an interface so I can > calculate the % > of errors on the line. > > Cisco says on their site : > http://www.cisco.com/warp/public/477/SNMP/5.html > > that > ifInNUcastPkts (.1.3.6.1.2.1.2.2.1.12) are counts of > inbound broadcast > and multicast packets > > ifOutUcastPkts (.1.3.6.1.2.1.2.2.1.17) are counts of > outbound > broadcast and multicast packets > > > besides In and Out whats the difference? I thought Ucast meant > unicast and > NUcast meant broadcast and multicast. > When queried, every int gives NUcast and Ucast which are > different values. > How could Cisco define them as the same. > > Is this a misprint? > Lastly I'm assuming that total packets would be the sum of the > 2(unicast + > multicast/broadcast). > Is this assumption correct? > > > ps i don't want ifOutOctets because i want the # of packets > not bytes. > > thankd > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=38853&t=38824 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
RE: SNMP Packet question [7:38824]
Actually, we are using this OIDs, but they are for switches (number of
frames):
dot1dBridge.dot1dTp.dot1dTpPortTable.dot1dTpPortEntry.dot1dTpPortInFrames.1
dot1dBridge.dot1dTp.dot1dTpPortTable.dot1dTpPortEntry.dot1dTpPortOutFrames.1
Why don't you try this in a Unix/Linux?:
snmpwalk -c public {ip} > tmp
and then try to find a number in tmp which is very close to the output of
show interface in that router.
I did it for finding out the previous OIDs, it's quite rudimentary, but I
was sicked of surfing trying to guess the OIDs and it worked fine.
sam sneed wrote:
>
> Hello group,
>
> I am trying to write a script in perl to monitor interface
> errors and total
> traffic during work hours. I'm doing an snmpwalk to get the
> info. I want the
> total amount of packets in and out of an interface so I can
> calculate the %
> of errors on the line.
>
> Cisco says on their site :
> http://www.cisco.com/warp/public/477/SNMP/5.html
>
> that
> ifInNUcastPkts (.1.3.6.1.2.1.2.2.1.12) are counts of
> inbound broadcast
> and multicast packets
>
> ifOutUcastPkts (.1.3.6.1.2.1.2.2.1.17) are counts of
> outbound
> broadcast and multicast packets
>
>
> besides In and Out whats the difference? I thought Ucast meant
> unicast and
> NUcast meant broadcast and multicast.
> When queried, every int gives NUcast and Ucast which are
> different values.
> How could Cisco define them as the same.
>
> Is this a misprint?
> Lastly I'm assuming that total packets would be the sum of the
> 2(unicast +
> multicast/broadcast).
> Is this assumption correct?
>
>
> ps i don't want ifOutOctets because i want the # of packets
> not bytes.
>
> thankd
>
>
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Re: SNMP Packet question [7:38824]
R. Benjamin Kessler had the correct answer. I do use Linux and the problem
with your suggestion is that the value given by show interfaces is not the
same value as what the snmpget gives. If you have ever cleared the counters
on the interface then its definitely not the same. This particular OID is a
read only variable and can only be cleared via a reboot.
""David j"" wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> Actually, we are using this OIDs, but they are for switches (number of
> frames):
>
dot1dBridge.dot1dTp.dot1dTpPortTable.dot1dTpPortEntry.dot1dTpPortInFrames.1
>
dot1dBridge.dot1dTp.dot1dTpPortTable.dot1dTpPortEntry.dot1dTpPortOutFrames.1
>
> Why don't you try this in a Unix/Linux?:
> snmpwalk -c public {ip} > tmp
> and then try to find a number in tmp which is very close to the output of
> show interface in that router.
> I did it for finding out the previous OIDs, it's quite rudimentary, but I
> was sicked of surfing trying to guess the OIDs and it worked fine.
> sam sneed wrote:
> >
> > Hello group,
> >
> > I am trying to write a script in perl to monitor interface
> > errors and total
> > traffic during work hours. I'm doing an snmpwalk to get the
> > info. I want the
> > total amount of packets in and out of an interface so I can
> > calculate the %
> > of errors on the line.
> >
> > Cisco says on their site :
> > http://www.cisco.com/warp/public/477/SNMP/5.html
> >
> > that
> > ifInNUcastPkts (.1.3.6.1.2.1.2.2.1.12) are counts of
> > inbound broadcast
> > and multicast packets
> >
> > ifOutUcastPkts (.1.3.6.1.2.1.2.2.1.17) are counts of
> > outbound
> > broadcast and multicast packets
> >
> >
> > besides In and Out whats the difference? I thought Ucast meant
> > unicast and
> > NUcast meant broadcast and multicast.
> > When queried, every int gives NUcast and Ucast which are
> > different values.
> > How could Cisco define them as the same.
> >
> > Is this a misprint?
> > Lastly I'm assuming that total packets would be the sum of the
> > 2(unicast +
> > multicast/broadcast).
> > Is this assumption correct?
> >
> >
> > ps i don't want ifOutOctets because i want the # of packets
> > not bytes.
> >
> > thankd
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Re: SNMP Packet question [7:38824]
Thanks for the information, I think I've read something about this issue in some place. The script I wrote was only for Nortel switches and I hadn't tried to do anything for routers because we're using CW2000 Regards, David. R. Benjamin Kessler had the correct answer. I do use Linux and the problem with your suggestion is that the value given by show interfaces is not the same value as what the snmpget gives. If you have ever cleared the counters on the interface then its definitely not the same. This particular OID is a read only variable and can only be cleared via a reboot. Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=38967&t=38824 -- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
