| Title: | DECmcc user notes file. Does not replace IPMT. |
| Notice: | Use IPMT for problems. Newsletter location in note 6187 |
| Moderator: | TAEC::BEROUD |
| Created: | Mon Aug 21 1989 |
| Last Modified: | Wed Jun 04 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 6497 |
| Total number of notes: | 27359 |
Is it possible to change a SNMP entities ifSpeed attribute? I cannot
seem to set it manually.
What I want to do is graph utilization using the graph function on the
ethernet side of a NSl router. This router has a DMV11 on one side and
a Ethernet adapter on the other. I can successfully get 'inbound' and
'outbound' utilization data from the ethernet adapter but those attibutes
are not available on the DMV11 side. The DMV talks at 56000 and the E-net
side talks 10000000. When I show the 2 interfaces in MCC, their ifSpeed
attribute is already set. So when I graph the e-net side, the data is
based on a interface that can talk at 10000000. However, what I really
want is utilization based on a speed of 56000. I can't get that data
from the DMV side, so I wanted to change the ifSpeed attibute on the
E-net side to 56000 so that I can make MCC 'think' that that interface
has only a speed of '56000'. This will give me a graph of the utilization
of a theoretical 56k wire.
Can I do this with MCC or is the ifSpeed attribute queried in from the
actual adapter?
Thanks for any help.
Bill
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 4319.1 | ifSpeed in AGENT | CTHQ::WOODCOCK | Tue Dec 29 1992 13:06 | 15 | |
> Can I do this with MCC or is the ifSpeed attribute queried in from the
> actual adapter?
The ifSpeed attribute is resident on the boxes AGENT from an MCC perspective.
So if the agent allows you to set it you're ok, if not, then you're out of
luck. I don't believe the nsl router will let you set it, but I'm not an
authority on the nsl box. We got nailed with the same problem w/Wellfleet
boxes in that they had all ifSpeeds at 10000000 for a while. I ended up
getting Octet Rates then applying an external calculation to get utilization
(ugly but the job got done). Wellfleet now allows to set ifSpeed so this
shouldn't be a problem when I get around to converting the procedures.
hope this helps,
brad...
| |||||
| 4319.2 | VCSESU::WADE | Bill Wade, VAXc Systems & Support Eng | Wed Dec 30 1992 09:49 | 16 | |
ifSpeed is read-only as defined in MIB-II -
ifSpeed OBJECT-TYPE
SYNTAX Gauge
ACCESS read-only
STATUS mandatory
DESCRIPTION
"An estimate of the interface's current bandwidth
in bits per second. For interfaces which do not
vary in bandwidth or for those where no accurate
estimation can be made, this object should contain
the nominal bandwidth."
::= { ifEntry 5 }
| |||||
| 4319.3 | set via non-snmp | CTHQ::WOODCOCK | Wed Dec 30 1992 14:16 | 25 | |
> ifSpeed is read-only as defined in MIB-II -
> ifSpeed OBJECT-TYPE
> SYNTAX Gauge
> ACCESS read-only
> STATUS mandatory
> DESCRIPTION
> "An estimate of the interface's current bandwidth
> in bits per second. For interfaces which do not
> vary in bandwidth or for those where no accurate
> estimation can be made, this object should contain
> the nominal bandwidth."
> ::= { ifEntry 5 }
Interesting, it may be read-only from SNMP but the vendor may allow this to be
SET from a configuration load file. We are currently setting all ifSpeed values
on our Wellfleets thru their config menus via telnet then reload. I would tend
to think the true spirit of ifSpeed was for the implementation to 'read' the
clock speed from the interface and report. Wellfleet probably took the easy way
out when customers moaned and created the pseudo value.
best regards,
brad...
| |||||