Interface data rate readings fluctuate rapidly via SNMP

Our cisco ASR 9000 router has been recently upgraded from 3.9.0 to 4.1.2, I'm monitoring the activity (traffic in/out) of its interfaces via PRTG network monitor software, the readings I am getting now fluctuates alot and the utilization graph is showing high and low peaks, the graph is meaningless now and it's not smooth as it use to before, does anyone know the reason for this behavior ?

Hi,
I presume that this is the ACL rule that you have created
object service http
service tcp source eq www destination eq www
access-list OUTSIDE_IN extended permit object http any object DEV_SERV
And I presume that this is the Static PAT (Port Forward) configuration for the server you require access to.
object network DEV_SERV
host 192.168.2.32
nat (data,outside) static xx.xx.xxx.xx service tcp www www
While the NAT configuration seems fine if you want to do Static PAT and dont have a spare public IP address to do Static NAT, it does seem that your ACL rule is wrong.
Notice that you define the service to be sourced from port TCP/80 and also destined to port TCP/80. The source port of a clients web server connection will probably never be TCP/80. It will be some random number above 1024 usually. You should only limit the connectivity on the basis of the destination port.
So you could add this ACL configuration rather
access-list OUTSIDE_IN permit tcp any object DEV_SERV eq www
Let me know how it goes
Hope this helps
- Jouni

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Or there is no way to check current load by this way? Only polling?
P.S. Ethernet subinterface, of course.
With great respect, S.A.

Hi,
Try to use:
1.3.6.1.4.1.9.2.2.1.1.6 - InBitRate
1.3.6.1.4.1.9.2.2.1.1.8 - OutBitRate
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Hi ,
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Object    cevcSIMatchCriteriaType OID    1.3.6.1.4.1.9.9.613.1.4.6.1.4
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Can't Ping or access via SNMP Inside interface of 5505

I have a remote site I'm trying to setup monitoring on and I can't get the inside interface to respond to a ping or SNMP requests. I have tried everything I can find in the forums and on the web but this location will not cooperate. I have full access to the ASA and to the inside network behind it. IPSEC VPN tunnel is working perfectly. I see the ping requests in the log on the ASA. I turned on ICMP debugging and only see the echo request.. never an echo reply. Below is a partial configuration. If you need any more information, let me know.
names
name 192.168.0.0 Domain
name 1.1.1.2 MCCC_Outside
name 172.31.10.0 VLAN10
interface Ethernet0/0
switchport access vlan 2
interface Ethernet0/1
interface Ethernet0/2
interface Ethernet0/3
interface Ethernet0/4
interface Ethernet0/5
interface Ethernet0/6
interface Ethernet0/7
interface Vlan1
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interface Vlan2
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security-level 0
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clock timezone EST -5
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subnet 172.31.0.0 255.255.0.0
access-list outside_1_cryptomap extended permit ip 192.168.23.0 255.255.255.0 any
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access-list inside_nat0_outbound extended permit ip 192.168.23.0 255.255.255.0 object Domain
access-list Outside_NAT0_inbound extended permit ip object Domain 192.168.23.0 255.255.255.0
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access-list inside_access_in extended permit ip any 192.168.23.0 255.255.255.0 inactive
no pager
logging enable
logging timestamp
logging buffered debugging
logging trap informational
logging asdm informational
logging device-id hostname
logging host inside 192.168.x.x 17/1514
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mtu outside 1500
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arp timeout 14400
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timeout sunrpc 0:10:00 h323 0:05:00 h225 1:00:00 mgcp 0:05:00 mgcp-pat 0:05:00
timeout sip 0:30:00 sip_media 0:02:00 sip-invite 0:03:00 sip-disconnect 0:02:00
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timeout floating-conn 0:00:00
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user-identity default-domain LOCAL
aaa authentication ssh console LOCAL
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http server enable
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crypto map outside_map 1 set ikev2 ipsec-proposal AES256 AES192 AES 3DES DES
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inspect h323 h225
inspect h323 ras
inspect ip-options
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inspect skinny
inspect esmtp
inspect sqlnet
inspect sunrpc
inspect tftp
inspect sip
inspect xdmcp
inspect icmp
policy-map global-policy
service-policy global_policy global
prompt hostname context

Hi,
First of all let me clarify your trial.
Where is your monitoring server?
Is it behind inside or outside interface (please share ip adress)?
From config it seems, it can be reach via outside interface. Then you have to make snmp check on outside interface, not on inside (cannot make a snmp/ping check on inside interface with request comming through outside inteface - it simply won't work).
From the first check of routing table, I would suggest:
delete : route outside MCCC_Outside 255.255.255.255 1.1.1.1 1 - doesn't make a sense route host address, when it's directly connected network (and more, route 1.1.1.2 to 1.1.1.1, when 1.1.1.1 is vlan2 interface)
change : route outside 172.31.0.0 255.255.0.0 192.168.1.1 1; route outside Domain 255.255.0.0 192.168.1.1 1 - you should consider route it to 1.1.1.2 (if this is your next hop address at WAN).
route outside VLAN10 255.255.255.0 MCCC_Outside 1 - why?
I would use default route to somewhere at 1.1.1.0/24 range - next hop (router).
HTH,
Pavel

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Hi,
I'm trying to understand how to get interface errors via SNMP. I do get stats via SNMP for ifInErrors / ifOutErrors etc, but I'm trying to get output via SNMP for the errors visible via the 'sh int x' command - CRC errors, input / output errors, collisions, runts. giants etc.).
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2) Is there any way I can get the interface-specific errors noted above via SNMP?
Thanks,
Mario

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Hi guys,
Please tell me how i RESET my AP's radio interface via SNMP? It's mean down and up right behind sb.
I'm using several SNMP commands for manage to our Cisco's. But I'm unsuccessful at this.. Please help me. Thakns.

Isn't there any response? isn't there any Cisco Specialist at there???

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Can anyone suggest any other reason for the problem?
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SPD.

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Where you are in a situation where the system becomes unstable step in and take more control.
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AX1 say for base name. (second one will be AX2.)
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Set fixed channels.. try 11 for 2.4ghz and 36 for 5ghz to start with.
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If 5ghz doesn't work well then you will need to stick with 2.4ghz.
Some strange effects come out of all this.. but it is well worth a try.
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This is my setup.. centre shows the main AP.. with the two each side extending the signal.

Event Log: Interface Dot11Radio0, parent lost: Had to lower data rate

Hi,
AIR-AP1242
Firmware: 12.3(8)JEB
AP -> WGB mobil station
The event log from WGB have often this warning:
%DOT!!-4-UPLINK_DOWN: Interface Dot11Radio0, parent lost: Had to lower data rate
Way?...
It is the first installation with this description.

Is the client able to associate to the AP and transfer data. This error message genrally indicate a weak signal strength or a bad link. Move the client to a different location and check if that works.

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We're working on writing a very simple web app to control a couple of access points via SNMP. I'm trying to shutdown the Wireless interface via SNMP WRITE with the following oid;
.1.3.6.1.2.1.2.2.1.7.1
and
.1.3.6.1.2.1.2.2.1.7.2
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Jason

Hi
Just found my own answer...the value to shutdown the interface is not 0, it's 2. durrr
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J

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Dear All,
I am interested in monitoring the interface statistics (In/Out bytes) of MDS9216 & MDS9124 Fabric Switches via SNMP and have been researching on what OID (MIB) values shall i poll? Would anyone be able to help me please? I have looked at many places but the closest I could get is the IF-MIB MIB Interface which has ifTable giving ifInOctets and ifOutOctest per port ! I am not sure if this is what i am suppose to poll as the ifInOctets gives 'the total number of octets recieved on the interface' and not the traffic ? What i am interested in is knowing the traffic (rx / tx) on the port at the time of polling so i can poll them say every 5 min. and plot them via something like cacti.
Please let me know if any one has got any suggestion as I am not getting anywhere on this.
Thanks in advance.

ifSpeed I see listed here :-
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Reducing data rate written to a LVM file

I have a LabVIEW 7.1 question regarding data logging. I have designed a system that reads the pressure of 6 4-20Ma pressure transducers. This data is then filtered to remove any noise, and displayed to the user on the computer's screen.
I am currently reading the data at 1000HZ using the DAQ Assistant, which seems to give a clear picture of the pressure changes. My supervisor has asked me to allow the system to log the results for what may be 3 or 4 days. As you ca imagine, 48 hours at 1000 samples a second is a lot of data! I need some method to reduce the data rate written to the file. Ideally, I would like to take one second of data, find the highest reading, and then file a single entry and a timestamp interval of 1 second. So, for each hour, there would be 3600 rows with 7 columns (1 time stamp and 6 sensors). It would be nice if the 1 second average could be adjustable, so that if long term logging is to be done (a week, for example), the interval can be changed to 5 seconds or whatever.
I have tried reducing the data read rate as much as possible, but it seems that 100hz is the smallest that is possible. That is still too high... as the hard drive would fill up in no time.
Any help in this area would be appreciated. I have tried a few things, and all to no success. I have included a copy of the code for anyone to review.
Hardware:
- 1 X P3 Laptop running LabVIEW 7.1 data acquisition software
- 1 X NI DAQCard-6062E interface PCard
- 1 X NI SC-2345 data acquisition hardware with
- 3 X SCC-CI20 current input module
- 6 X Omega PX 0-600PSIA 4-20mA pressure transducer
thanks so much!
Andrew
Attachments:
Testing.vi ‏812 KB

You would have to talk with your supervisor first to determine what he intends to do with the log data and what degree of resolution he actually needs first. You probably want the 1000Hz Sampling rate so you can do decent filtering on the signal (hopefully your pressures aren't actually changing at a faster rate than that). I'm assuming you are returning a single result for those 1000 readings for each sensor. Specify some file logging duration of n-seconds (or minutes or whatever). Between file writes, pop each filtered measurement into an array (either 1 array of 6 dimensions or 6 1-dimension arrays). After n-seconds have passed, determine the min, avg, and max values from each sensor (array) and log those with your timestamp. So if you set your log timer for 1 minute, you would log a single min, max, and average reading of 60 readings for 6 sensors (this would only require 1 row with say a timestamp and 3x6 (18) columns for each sensor's min, max, average data). After a 24hour period you will have logged 1440 rows of data. In 3 days that would only be 4320 rows of data. All that is as easy as using a timer and a case structure around your logging function which would be triggered every n-seconds. Everything else you're doing would be the same. None of this really has much to do with labview as it is more of a logical explanation of how and when to acquire and log your data. What method are you using for storing your data? CSV, BIN, etc.. If you also want to display the data in a chart, I would recommend charting the same data you're logging, otherwise your chart will probably crash your system at 1000samps/second for 60 hours.. Once again, it depends on how your supervisor is analyzing the logged data. Make your log duration programmable and change it until he is happy. If he's(she's?) using Excel, your maximum log timer would be 9 seconds (Equates to ~6.67 Logs per Minute, ~400 Logs per Hour, ~9600 Logs Per Day, for a total of 28,800 Logs(rows) for 3 days -- Excel is limited to 32000 rows).

WEP Setup via snmp

I am trying to manage WEP keys via SNMP on my Aironet1200-IOS based AP.
The cd11IfVlanEncryptKeyTable holds the WEP data configured via the WEB interface.
Using SNMP I can delete table rows and modify existing entries, but I cannot create new entries.
Anybody know what I am doing wrong?
Thanks
Ashleyb
(I have attached the script I used to try and update the keys)

Hi Ashleyb,
I've just came across your problem and I know
it's been loooong :) time you posted it but perhaps
that might be a kind of hlep for you.
I think what you are doing wrong is trying to create
a row in a table 'partially' whereas it should be
created 'at one go' using just single SNMP command like this one below;
# snmpset -mall -v1 -c Admin 10.0.0.197
.1.3.6.1.4.1.9.9.272.1.1.1.9.1.5.1.5.2 i 4 \
.1.3.6.1.4.1.9.9.272.1.1.1.9.1.3.1.5.2 u 13 \
.1.3.6.1.4.1.9.9.272.1.1.1.9.1.4.1.5.2 x 12345678901234567890123456 \ .1.3.6.1.4.1.9.9.272.1.1.1.9.1.6.1.5.2 i 2
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Pawel Szczuka

Max Data Rate: AGP 2x?!

Bought myself a new MSI-KT6 Delta a few weeks ago (MSI-6590), and have had no problems until now.
First up, my GeForce 4 Ti 4600 decided to suddenly die. Random characters on the screen in text mode, flickery colours and corrupt pixels everywhere. Windows wouldn't detect it properly anymore.
Bought a new Powercolor Radeon 9600 XT with VIVO today. Downloaded the new drivers, and loaded up some Battlefield, all good. Runs nice and smooth. COD, Quake 3, etc, no problems at all.
Halo, however... BAD. Even with the basic graphics settings and no Pixel-Shading, it runs at 4 frames a second, and nothing I do changes this, from lowest to highest with Pixel-Shaders 2.0. Although there's a visual difference, it's just as slow.
So I loaded up ATI control Panel and used SmartGart to enable 8x and Fast-Writes... Rebooted, lots of flickering screen, and Windows XP is now software-rendering everything (Transparent menus take 100% CPU to fade in)
Wait for SmartGart to fix my graphics again, and it's all back to 4x and no fast-write.
Loaded up SiSoft Sandra, to check the settings in there...
Mainboard: "Max Data Rate: AGP 2x"
AGP Card: "Data Transfer Modes Support: 1x, 2x"
"AGP Bus is unused or AGP card not fully AGP compatible"
Er... should this be right? BIOS wont let me select an AGP speed, it's "Auto" and I can't select it. I'm a little concerned that my Motherboard may have been damaged! I'll go get the latest Halo Patch, but it doesn't change the fact that I can't use 8x or Fast-Write.
I'm a little apprehensive about flashing my BIOS, made more difficult by the fact that I have no working floppy drive.
CPU: AMD 2600+
RAM: 2x512mb DDR 333MHz Kingston
AlphaGremlin

Well, I updated the VIA drivers, and an updated Sandra. AGP is running at 8x, and Fast-Writes are enabled! I don't know what the hell SmartGart was going on about, but it appears to slunk away and disappeared completely from the ATI control panel since the last reinstall of drivers.
So there's one problem solved... but I don't know what's up with Halo... I can set it to the lowest settings and it still runs like an elephant with three legs, even with the -useff option for Fixed Function shaders... ah well, that's a matter for another forum, eh?
Interesting note: Sandra reports my 120gb drive as 605gb... should I be trusting it?
AlphaGremlin

H.264 All-Intra Data Rates Significantly Higher

Does the built-in H.264 codec encode I-frame only files differently? I am trying to determine the optimal GOP length for high bitrate exports. Image quality seems to degrade, even in the I-frames, when using key frame distances greater than one.
After performing a series of tests to characterize the Adobe H.264 encoder, I discovered that exported files are significantly larger when key frame distance equals one frame (N=1). The average video data rate for a test file rendered with the Adobe H.264 encoder is as follows:
N=1 : 2.17 bpp : 24I
N=2 : 0.66 bpp : 12I + 12P
N=3 : 0.59 bpp : 8I + 8B + 8P
Note how the data rate drops 70% (from 2.17 to 0.66 bpp) even though 50% of the I-frames still exist when N=2. By comparison, here is the video data rate when exporting with QuickTime H.264:
N=1 : 0.89 bpp : 24I
N=2 : 0.70 bpp : 12I + 12P
N=3 : 0.64 bpp : 8I + 16P
The following chart shows data rates at key frame distances from 1-48 frames for Adobe H.264, QuickTime H.264 (via Adobe), QuickTime Pro, and Expression Encoder 4 Pro. Data rates are consistent among all encoders at GOP lengths greater than one. There is an anomoly with the Adobe H.264 codec compressing all-intra files.
The observed behavior occurs in all profiles, which were tested at Levels 4.1, 4.2, 5.0, and 5.1:
Image quality is better in the Adobe H.264 all-intraframe file, especially with respect to detail retention. The pictures below show sections of two consecutive frames magnified 400%. The file with N=2 is less accurate and contains noticeable blocking. Even the I-frames don't look as good in the files where N>1.
The test file was a seventeen second Premiere Pro sequence consisting of H.264, MPEG-2, and AE files with effects applied. Exports were rendered from the Premiere Pro timeline and from a V210 uncompressed 4:2:2 intermediate file of the sequence. The following settings were used:
Format: H.264
Width: 1280
Height: 720
Frame Rate: 24 fps
Field Order: Progressive
Aspect: Square Pixels (1.0)
TV Standard: NTSC
Profile: Baseline, Main, and High
Levels: 4.1, 4.2, 5.0, 5.1
Render at Maximum Bit Depth: Enabled
Bitrate Encoding: VBR, 2-Pass
Target Bitrate: Maximized for each Profile/Level
Maximum Bitrate: Maximized for each Profile/Level
Key Frame Distance: 1, 2, 3, 4, 5, 6, 7, 8, 12, 24, 48
Use Maximum Render Quality: Enabled
Multiplexer: MP4
Stream Capability: Standard
Software:
Adobe Media Encoder CS6 Creative Cloud v6.0.3.1 (64-bit)
Premiere Pro CS6 Creative Cloud v6.0.3
Windows 7 SP1
QuickTime Pro for Windows v7.6.9 (1680.9)
MediaInfo 0.7.62 (for GOP and data rate information)

I think the short answer is yes,
a h.264 encoder does I-frame only differently. I frames are complete expressions of a picture with no temporal compression information.
P frames use _P_redictive information. IE information from prior frames.
B frames use _B_i-directional predictive frame information.
h.264 gets the majority of it's bit saving from use of B and P frames. When you do I-frame only you only get the block compression and none of the advantages of P and B frames. Thus the GOP N=1 doesn't get very good bit's per pixel.
Having said all that I do find your comment...
Profitic wrote:
Note how the data rate drops 70% (from 2.17 to 0.66 bpp) even though 50% of the I-frames still exist when N=2. By comparison, here is the video data rate when exporting with QuickTime H.264:
... very interesting. Indeed, why is the datarate 70% less when it should at best be 50% for GOP N=2. 50% less should be the same I-frame information plus 0 bytes for the B frame between them. (GOP = I,B,I). Any more than that and it is throwing away bits from the I-frame. So, this seems to be to be a ratecontrol bug.
http://en.wikipedia.org/wiki/Group_of_pictures
"The GOP structure is often referred by two numbers, for example, M=3, N=12. The first number tells the distance between two anchor frames (I or P): it is the GOP size. The second one tells the distance between two full images (I-frames): it is the GOP length. For the example M=3, N=12, the GOP structure is IBBPBBPBBPBBI. Instead of the M parameter the maximal count of B-frames between two consecutive anchor frames can be used."

Dual data rate stream problem

I am streaming a live source that is being encoded at 2 different data rates. One is a 360Kbps stream, the other is a 28Kbps stream (for dial up users). I have created a reference movie that contains URLs for each of these streams. The high speed one is characterized as requiring 384Kbps DSL/Cable. The second is set to 56Kbps Modem/ISDN.
I have a Mac Mini and a PC on my desktop, both connected to my streaming server directly via the LAN. Both are running Quicktime 7.4.1. Both have their Quicktime Preference for Streaming Speed set for Automatic (The Quicktime default).
The PC always selects the high speed stream. The Mac always selects the low speed stream. The only way to make the Mac pick the correct stream is to set the streaming speed preference manually. I have even tried rebuilding the reference movie, setting the required data rate to as low as 112Kbps, but still the Mac refuses to believe it can handle that speed and picks the other one. The bandwidth to the server is actually in the Mbps range, and the stream plays just fine when it is forced to play through manual configuration.
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How about some more information on the memory you purchasaed. If you purchased (2) 2GB sticks of memory the motherboard only supports 1GB of memory per slot and they will not function properly. Is the Patriot RAM single side or double side and did it work before you installed the 2GB modules??

Interface data rate readings fluctuate rapidly via SNMP

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