Traffic monitoring on 3750
Hi Folks,
Greetings and happy new year!! I have a network core which is on a stacked 3750g, that has several SVIs for network segmantation. Some of the SVIs have ACLs applied on them. I need to help in determining whan tools to use to be able to see inter-VLAN traffic on the 3750's, we need this to determine how lockdown the network. I just realized that ip accounting and netflow is not supported on the 3750s.
Thank you in advanced.
JP
Kyle,
On a 3750, I think you can do WCCP if you have the right software load on it.
http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps5023/prod_qas09186a00801b0971.html
There are limitations to the 3750... it only does L2 redirection (no GRE) and assignment must be mask.
and you have to have SDM set to prefer routing....
sdm prefer routing
Then turn on WCCP for dynamic service group 90 (so you can set what ports you need on the WSA)
Switch(config)# ip wccp 90 group-list 15
Create an ACL to keep traffic to internal servers from being redirected to your WSA
Switch(config)# access-list 15 deny any 10.90.0.0 255.255.0.0 <--add whatever networks you need.
Switch(config)# access-list 15 permit any any
Assuming the VLAN you have the WSA and the DSL router on is 301
Switch(config)# interface vlan 301
Switch(config-if)# ip wccp 90 redirect in
This will catch inbound traffic to the VLAN an hand it to the WSA, assuming it doesn't match the ACL. If the WSA is down, it routes it as normal...
Here's the docs I pulled that from (near the bottom for doing a vlan instead of a port...)
http://www.cisco.com/en/US/docs/switches/lan/catalyst3750e_3560e/software/release/12.2_58_se/configuration/guide/swwccp.html#wp1031033
The WSA should negotiate the L2 vs GRE & mask vs. hash issues...
Hope that helps.
Ken
Similar Messages
-
In the IronPort web security appliance documentation, it indicates that the L4 traffic monitor ports (T1 and/or T2) should be connected to either a network tap or switch span.
I'm a little confused as to how this is supposed to be set up.
Does it mean that you take 2 ports on a switch, one on the same subnet/vlan as the P1 interface (data) on the IronPort, and the other that is on the subnet/vlan as the firwall (outbound Internet traffic) and create 2 monitor sessions (spans)? If so, where are these sessions pointed to?
Isn't the IronPort supposed to be doing the tapping/inspection?
The whole external tap thing has me confused.Colin,
One way to think of it is that the WSA has 2 inspection engines that don't actually talk to one another...
1. the web proxy, where you're using WCCP to send specific traffic to
2. the L4TM engine that you send a spanned port to to catch all of the other weird stuff.
The web proxy does all of the user tracking/policy stuff, etc. Watching a specific set of ports.
The L4TM is intended for malware that might be running on your net... sort of like the Botnet Traffic filter that's available on ASA.
That said, you'll use 1 port for P1 on whatever vlan, redirection to that happens via WCCP or explicit proxy.
For the L4TM tap you can use 1 or 2 ports on the swtich, or none if you use an external tap. In the Network/Interfaces page, you set whether you want L4TM to use simplex or Duplex. If you use Duplex, just do a span session off the port the firewall is plugged into to the port that you connect T1 into...
If you use Simplex, you do 2 span sessions off of the port the firewall is connected to... ingress traffic on the port (eg. out of the firewall) to the port T1 is connected to, egress traffic on the port (eg. going to the firewall) spanned to the port T2 is hooked up to.
If you use an external tap, put it inline between the firewall and the switch, set the WSA for duplex and connect the "monitor" port to T1...
Hope that helps!
Ken -
Need help in generating L4 Traffic monitor logs
Hi,
As a part of my project I need to study different types of logs produced by Cisco IronPort. I could generate some access and authentication logs however not sure about generating the L4 Traffic Monitor logs. Can anyone point me to right documentation that will help me generate those logs?
Thanks,
Harshad KashikarHarshad,
L4 Traffic Monitoring needs to be configured within the IronPort - first question is do you have a SPAN/TAP port set up on your switch to capture L4 traffic?
Second, I only use this feature to capture information on malware/spyware - I have seen P2P, IRC, and 'phone-home' traffic amongst other things. Do you have an infected host you can monitor?
BF -
L4 traffic monitor - blocking traffic ?
Hello
How does L4 traffic monitor is blocking traffic if T1/T2 ports are "tap/sniffed ports" ?
For SPAN we might have "ingress vlan feature" which would allow us to send TCP RST (like IPS does),
but for hardware TAP we do not have such a feature.
So - maybe L4 traffic monitor can not block any traffic, just make a decision what to block and execution is on WebProxy and P1/2 ports ?
ThanksMichael,
Yes, the reset is sent via P1
Ken
Sent from Cisco Technical Support iPad App -
Can an Ironport work in both WCCPv2 and L4 Traffic monitoring modes at the same time?
Hello Ciscoers,
We have an ironport installed and we use WCCPv2 to redirect the traffic. And as it occurs, I have a need to forward the traffic for another network, that uses another path to the Internet.
So I was thinking using the L4 Traffic Monitoring.
To the best of your knowledge, is there a way to have the appliance use both WCCPv2 and L4 Traffic monitoring at the same time? From the configuration, it's one or the other.
Thanks,
J.Ok. I'll try.
As a matter of fact, I plan to use policy-based routing to forward all the "interesting" traffic to the appliance.
For your TCP-Resets not seen, do you allow ingress on the span session?
J. -
Traffic monitoring for Coherence 3.1
The objective of our small project is to monitor the traffic on our coherence clusters. We also were trying to put the cache traffic as a object in the same cache name. The problem we encountered was during performance tests something happened to the coherence clusters and there appears to be some kind of lock not being released for others which made all the weblogic cluster go down. Weblogic went down with "too many open files". We have thread dumps which I can send if you guys need it nevertheless I have attached a part which I suspect is the reason.
Heres the Code that was trying to do the monitoring. The doPut Servlet method does the put , after the put it calls a method RegisterTraffic which has a small logic to increment the count & put back into the cache. It has a Lock for the particular "Traffic" key.
* The Servlets doPut method - Handles the Cache Put Requests
* @param HttpServletRequest request, HttpServletResponse response
* @return void
* @throws CacheException
public void doPut(HttpServletRequest request, HttpServletResponse response) throws
ServletException, IOException {
ServletOutputStream out = response.getOutputStream();
String value = "";
try {
String id = request.getPathInfo();
String expires = request.getHeader("Expires");
String contentType = request.getContentType();
String app_name = request.getHeader("App-Name");
int contentLength = request.getContentLength();
if (contentLength > 0) {
byte valueArray[] = new byte[contentLength];
ServletInputStream in = request.getInputStream();
int bytesRead = 0;
int offset = 0;
while (bytesRead > -1) {
bytesRead =
in.read(valueArray, offset, valueArray.length - offset);
offset += bytesRead;
if (offset == contentLength) {
break;
DataObject myValue = new DataObject();
myValue.setByte(valueArray);
myValue.setExpirationTime((Long.parseLong(expires))*1000);
Cache_Manager.put(id, myValue);
response.setContentType("application/octet-stream");
value = "ID "+id+" Stored";
out.write(value.getBytes());
out.flush();
RegisterTraffic(app_name,"PUT");
} catch (Exception ex) {
response.setContentType("application/octet-stream");
value = "CACHE_ERROR:"+ErrorCode.INTERNAL_PROBLEM_CODE+":"+"doPut:"+ErrorCode.INTERNAL_PROBLEM_MSG;
response.setContentLength(value.length());
out.write(value.getBytes());
throw new ServletException(value+"\n"+ex.getMessage());
* The Servlets Traffic Monitor method - Handles the Traffic monitoring
* @param appname, get or put or clear
* @return void
* @throws CacheException
public void RegisterTraffic(String appName, String action) {
String trafficKey = "Traffic";
try {
HashMap hmTotal = new HashMap();
HashMap hmToday = new HashMap();
Object obj = null;
HIDataObject dObj = null;
String today = (new java.util.Date().toString()).substring(0,3);
//String today = "SAT";
Long totalTrafficCount = new Long(1);
Long todayTrafficCount = new Long(1);
long totalCnt = 0;
long todayCnt = 0;
// Lock the Object.
Cache_Manager.lock(trafficKey,-1);
try{
dObj = (HIDataObject)Cache_Manager.get(trafficKey);
} catch(java.lang.NullPointerException nex) {
// If this Exception then we are doing it for the first time.
// Ignore this exception
} catch(Exception exe) {
CacheLog.error("CACHE_ERROR: RegisterTraffic Failed with Following Exception\n"+exe.getMessage());
if (dObj != null) {
hmTotal = dObj.getTotalTrafficHashMap();
hmToday = dObj.getTodayTrafficHashMap();
// HashMap.get will throw error for the first time , so initialize to 1.
try{
totalTrafficCount = (Long)hmTotal.get(appName+"-"+action);
} catch(java.lang.NullPointerException nex) {
CacheLog.error("CACHE_ERROR: RegisterTraffic Failed with Following Exception\n"+nex.getMessage());
try{
todayTrafficCount = (Long)hmToday.get(today+"-"+appName+"-"+action);
} catch(java.lang.NullPointerException nex) {
CacheLog.error("CACHE_ERROR: RegisterTraffic Failed with Following Exception\n"+nex.getMessage());
try{
totalCnt = totalTrafficCount.longValue();
todayCnt = todayTrafficCount.longValue();
} catch (Exception e) {
// Increase the counn here
totalCnt++;todayCnt++;
hmTotal.put(appName+"-"+action,new Long(totalCnt));
hmToday.put(today+"-"+appName+"-"+action,new Long(todayCnt));
try{
HIDataObject myValue = new HIDataObject();
myValue.setTotalTrafficHashMap(hmTotal);
myValue.setTodayTrafficHashMap(hmToday);
myValue.setExpirationTime(86400000);
Cache_Manager.put(trafficKey, myValue);
} catch (Exception exe){
CacheLog.error("CACHE_ERROR: RegisterTraffic Failed with Following Exception\n"+exe.getMessage());
} catch (Exception ex) {
CacheLog.error("CACHE_ERROR: RegisterTraffic Failed with Following Exception\n"+ex.getMessage());
} finally {
Cache_Manager.unlock(trafficKey);
Weblogic Thread Dumps
"TcpRingListener" id=76 idx=0x96 tid=19164 prio=6 alive, in native, daemon
at java/net/PlainSocketImpl.socketAccept(Ljava/net/SocketImpl;)V(Native Method)
at java/net/PlainSocketImpl.accept(Ljava/net/SocketImpl;)V(PlainSocketImpl.java:353)
^-- Holding lock: java/net/PlainSocketImpl@0xc5f4238[thin lock]
at java/net/ServerSocket.implAccept(Ljava/net/Socket;)V(ServerSocket.java:448)
at java/net/ServerSocket.accept()Ljava/net/Socket;(ServerSocket.java:419)
at com/tangosol/coherence/component/net/socket/TcpSocketAccepter.accept()Lcom/tangosol/coherence/component/net/socket/TcpSocket;(TcpSocketAccepter.CDB:17)
at com/tangosol/coherence/component/util/daemon/TcpRingListener.acceptConnection()V(TcpRingListener.CDB:9)
at com/tangosol/coherence/component/util/daemon/TcpRingListener.onNotify()V(TcpRingListener.CDB:1)
at com/tangosol/coherence/component/util/Daemon.run()V(Daemon.CDB:34)
at java/lang/Thread.run()V(Unknown Source)
at jrockit/vm/RNI.c2java(IIII)V(Native Method)
-- end of trace
"DistributedCache" id=78 idx=0x98 tid=19165 prio=5 alive, in native, waiting, daemon
-- Waiting for notification on: com/tangosol/coherence/component/util/daemon/QueueProcessor$Queue@0xc5c6998[fat lock]
at jrockit/vm/Threads.waitForSignal(J)Z(Native Method)
at java/lang/Object.wait(J)V(Native Method)[optimized]
at com/tangosol/coherence/component/util/Daemon.onWait()V(Daemon.CDB:9)[optimized]
^-- Lock released while waiting: com/tangosol/coherence/component/util/daemon/QueueProcessor$Queue@0xc5c6998[fat lock]
at com/tangosol/coherence/component/util/Daemon.run()V(Daemon.CDB:31)
at java/lang/Thread.run()V(Unknown Source)
at jrockit/vm/RNI.c2java(IIII)V(Native Method)
-- end of trace
"ListenThread.Default" id=79 idx=0x9a tid=19166 prio=5 alive, in native
at java/net/PlainSocketImpl.socketAccept(Ljava/net/SocketImpl;)V(Native Method)
at java/net/PlainSocketImpl.accept(Ljava/net/SocketImpl;)V(PlainSocketImpl.java:353)
^-- Holding lock: java/net/PlainSocketImpl@0x1729efc8[thin lock]
at java/net/ServerSocket.implAccept(Ljava/net/Socket;)V(ServerSocket.java:448)
at java/net/ServerSocket.accept()Ljava/net/Socket;(ServerSocket.java:419)
at weblogic/socket/WeblogicServerSocket.accept()Ljava/net/Socket;(WeblogicServerSocket.java:26)
at weblogic/t3/srvr/ListenThread.accept()Ljava/net/Socket;(ListenThread.java:735)
at weblogic/t3/srvr/ListenThread.run()V(ListenThread.java:301)
at jrockit/vm/RNI.c2java(IIII)V(Native Method)
-- end of trace
Blocked lock chains
===================
Chain 2:
"ExecuteThread: '2' for queue: 'weblogic.socket.Muxer'" id=53 idx=0x70 tid=18903 waiting for java/lang/String@0x102fb4d8 held by:
"ExecuteThread: '1' for queue: 'weblogic.socket.Muxer'" id=52 idx=0x6e tid=18902 in chain 1
Coherence Thread Dumps
"PacketPublisher" id=21 idx=0x32 tid=20248 prio=6 alive, in native, waiting, daemon
at jrockit/vm/Threads.waitForSignal(J)Z(Native Method)
at java/lang/Object.wait(J)V(Native Method)
at com/tangosol/coherence/component/util/Daemon.onWait()V(Daemon.CDB:9)
^-- Lock released while waiting: com/tangosol/coherence/component/net/Cluster$PacketPublisher$Queue@0xcb36648[fat lock]
at com/tangosol/coherence/component/util/Daemon.run()V(Daemon.CDB:31)
at java/lang/Thread.run()V(Unknown Source)
at jrockit/vm/RNI.c2java(IIII)V(Native Method)
-- end of trace
"Cluster" id=22 idx=0x34 tid=20249 prio=5 alive, in native, waiting, daemon
-- Waiting for notification on: com/tangosol/coherence/component/net/Cluster$ClusterService$Queue@0xcb30190[fat lock]
at jrockit/vm/Threads.waitForSignal(J)Z(Native Method)
at java/lang/Object.wait(J)V(Native Method)
at com/tangosol/coherence/component/util/Daemon.onWait()V(Daemon.CDB:9)
^-- Lock released while waiting: com/tangosol/coherence/component/net/Cluster$ClusterService$Queue@0xcb30190[fat lock]
at com/tangosol/coherence/component/util/Daemon.run()V(Daemon.CDB:31)
at java/lang/Thread.run()V(Unknown Source)
at jrockit/vm/RNI.c2java(IIII)V(Native Method)
-- end of trace
"PO Async Executor" id=27 idx=0x36 tid=20436 prio=5 alive, in native, waiting, daemon
-- Waiting for notification on: java/lang/Object@0xa7573d8[fat lock]
at jrockit/vm/Threads.waitForSignal(J)Z(Native Method)
at jrockit/vm/Locks.wait(Ljava/lang/Object;J)V(Unknown Source)
at java/lang/Object.wait()V(Native Method)
at com/wily/EDU/oswego/cs/dl/util/concurrent/BoundedLinkedQueue.take()Ljava/lang/Object;(BoundedLinkedQueue.java:225)
^-- Lock released while waiting: java/lang/Object@0xa7573d8[fat lock]
at com/wily/EDU/oswego/cs/dl/util/concurrent/QueuedExecutor$RunLoop.run()V(QueuedExecutor.java:82)
at java/lang/Thread.run()V(Unknown Source)
at jrockit/vm/RNI.c2java(IIII)V(Native Method)
-- end of trace
"TcpRingListener" id=24 idx=0x38 tid=20252 prio=6 alive, in native, daemon
at java/net/PlainSocketImpl.socketAccept(Ljava/net/SocketImpl;)V(Native Method)
at java/net/PlainSocketImpl.accept(Ljava/net/SocketImpl;)V(PlainSocketImpl.java:353)
^-- Holding lock: java/net/PlainSocketImpl@0xd441530[thin lock]
at java/net/ServerSocket.implAccept(Ljava/net/Socket;)V(ServerSocket.java:448)
at java/net/ServerSocket.accept()Ljava/net/Socket;(ServerSocket.java:419)
at com/tangosol/coherence/component/net/socket/TcpSocketAccepter.accept()Lcom/tangosol/coherence/component/net/socket/TcpSocket;(TcpSocketAccepter.CDB:17)
at com/tangosol/coherence/component/util/daemon/TcpRingListener.acceptConnection()V(TcpRingListener.CDB:9)
at com/tangosol/coherence/component/util/daemon/TcpRingListener.onNotify()V(TcpRingListener.CDB:1)
at com/tangosol/coherence/component/util/Daemon.run()V(Daemon.CDB:34)
at java/lang/Thread.run()V(Unknown Source)
at jrockit/vm/RNI.c2java(IIII)V(Native Method)Hi user638596.
Frankly, there is not enough information to go by. The code you pointed to is definitely not "bullet proof". First, after the lock has been acquired, it only catches Exceptions, so any Errors (e.g. OutOfMemoryError) would "leak" a lock. In general, the locking-protected code should look like (in pseudo-code):
lock();
try
operations();
finally
unlock();
}However, without seeing the log files and entire thread dump, it's impossible to figure out a real reason. I'd suggest you to submit those to our support at Oracle Metalink.
Regards,
Gene -
[Request] NTM - Network Traffic Monitor
Hi to everyone:
Could anyone package this?: NTM - Network Traffic Monitor
NTM is a monitor of the network and internet traffic for GNU/Linux. Some characteristics:
* Choice of the interface to monitoring.
* Period to monitoring: Day, Week, Month, Year or Custom Days. With autoupdate.
* Threshold: Autodisconnection if a limit is reached (by NetworkManager).
* Traffic Monitoring: Inbound, outbount and total traffic; Show the traffic speed.
* Time Monitoring: Total time of connections in the period.
* Time Slot Monitoring: Number of sessions used.
* Reports: Show of average values and daily traffic of a configurable period.
* Online checking with NetworkManager or by "Ping Mode".
* The traffic is attributed to the day when the session began.
* Not need root privilege.
* Not invasive, use a system try icon.
NTM is useful for the people that have a internet plan with a limit, and moreover the exceed traffic is expensive.
NTM is write in python and is a open source software, the license is the GNU GPL v2.
A lot of thanks.#Maintairner: Brieuc Roblin <brieuc.roblin at gmail dot com>
pkgname='ntm'
pkgver='1.2.2'
pkgrel='1'
pkgdesc="Monitor of the network and internet traffic"
arch=('i686' 'x86_64')
license=('GPL')
depends=('pywebkitgtk' 'lsb-release' 'networkmanager')
makedepends=('dpkg')
url=('http://netramon.sourceforge.net/eng/index.html')
source=('http://freefr.dl.sourceforge.net/project/netramon/NTM/ntm-1.x/ntm-1.2.2.deb')
md5sums=('ec438b8c952ac866ffdaa57538d189b7')
build() {
cd "$srcdir"
# Extracting deb
msg2 "Extracting .deb ..."
dpkg-deb -x ntm-*.deb deb
cd "deb"
# Installing
msg2 "Installing..."
cp -r . "$pkgdir"/
I can't really test the program as I'm not using NetworkManager.
Last edited by PyrO_70 (2010-08-20 19:18:24) -
Cisco WSA : no data found in L4 traffic monitor summary
Hello !
Does L4 traffic monitor only display rogue traffic ? Because, I made a packet capture on the T1 interface and i saw that there was a lot of traffic but in the overview, no data was found in the field "L4 Traffic Monitor Summary". Is it normal ? There is a screenshot in enclosed files.
Thank you,
Stephane WalkerUDP ports will not be blocked.
The L4TM will use the T1 interface to detect traffic to destinations that are on its blacklist. Once detected, the the data interface on the WSA will send a packet with the TCP reset flag to the client to prevent a TCP connection.
I have not tested this so someone correct me if I am wrong. I am answering this based on my understanding of the L4TM feature, and how it works. Since UDP is connectionless, there is no connection for it to kill.
Now this makes me wonder about the Monitor feature though. But I am almost certain it will not block if the action is set to block.
I'll check this out when I'm in the office and will get back to you.
-Vance -
UDP traffic analyzed in L4 traffic monitor?
Dear all,
I just wonder if anyone knows whether UDP traffic is analyzed by the WSA's L4 traffic monitor?
It just tells "all ports" in the settings and reports also only reflect port numbers but no details like
which protocol (tcp/udp).
Anyone?
Best,
HaschaUDP ports will not be blocked.
The L4TM will use the T1 interface to detect traffic to destinations that are on its blacklist. Once detected, the the data interface on the WSA will send a packet with the TCP reset flag to the client to prevent a TCP connection.
I have not tested this so someone correct me if I am wrong. I am answering this based on my understanding of the L4TM feature, and how it works. Since UDP is connectionless, there is no connection for it to kill.
Now this makes me wonder about the Monitor feature though. But I am almost certain it will not block if the action is set to block.
I'll check this out when I'm in the office and will get back to you.
-Vance -
I have a Cisco 4507 and would like to start monitoring traffic analysis and must admit Im a beginer so any information would be gratefully received
Hello,
you can use netflow traffic monitoring and analyzis. More information about netflow you can read on the cisco pages http://www.cisco.com/go/netflow or in the documentation of our software on the: http://www.caligare.com/netflow/download.php (section appendix 1). If you have more questions regarding netflow let me know...
Jan
Caligare Co.
http://www.caligare.com -
24 Hr Network Traffic Monitoring
Hi Markus,
I got this 24-hour Network traffic monitoring output using the program you gave me ;)
I run every hour this > ./network-traffic.sh -c 1
It will give me 1 line output like this,
Monitoring eth0 every 3 seconds. (RXbyte total = 1 Gb TXbytes total = 2 Gb)
RXbytes = 58 Kb TXbytes = 51 Kband I call this program every hour via cron, to produce and output like this:
27-Oct-2010 00:00:07 RXbytes = 10 Kb TXbytes = 9 Kb
27-Oct-2010 01:00:07 RXbytes = 11 Kb TXbytes = 9 Kb
27-Oct-2010 02:00:07 RXbytes = 7 Kb TXbytes = 6 Kb
27-Oct-2010 03:00:07 RXbytes = 48 Kb TXbytes = 42 Kb
27-Oct-2010 04:00:07 RXbytes = 448 b TXbytes = 0 b
27-Oct-2010 05:00:08 RXbytes = 128 b TXbytes = 0 b
27-Oct-2010 06:00:07 RXbytes = 128 b TXbytes = 0 b
27-Oct-2010 07:00:08 RXbytes = 256 b TXbytes = 0 b
27-Oct-2010 08:00:08 RXbytes = 14 Kb TXbytes = 24 Kb
27-Oct-2010 09:00:07 RXbytes = 11 Kb TXbytes = 10 Kb
27-Oct-2010 10:00:08 RXbytes = 11 Kb TXbytes = 10 Kb
27-Oct-2010 11:00:07 RXbytes = 48 Kb TXbytes = 85 Kb
27-Oct-2010 12:00:08 RXbytes = 9 Kb TXbytes = 8 Kb
27-Oct-2010 13:00:07 RXbytes = 13 Kb TXbytes = 28 Kb
27-Oct-2010 14:00:08 RXbytes = 53 Kb TXbytes = 46 Kb
27-Oct-2010 15:00:08 RXbytes = 13 Kb TXbytes = 20 Kb
27-Oct-2010 16:00:08 RXbytes = 13 Kb TXbytes = 20 Kb
27-Oct-2010 17:00:08 RXbytes = 40 Kb TXbytes = 94 Kb
27-Oct-2010 18:00:07 RXbytes = 13 Kb TXbytes = 30 Kb
27-Oct-2010 19:00:08 RXbytes = 6 Kb TXbytes = 9 Kb
27-Oct-2010 20:00:08 RXbytes = 12 Kb TXbytes = 12 Kb
27-Oct-2010 21:00:08 RXbytes = 15 Kb TXbytes = 40 Kb
27-Oct-2010 22:00:07 RXbytes = 9 Kb TXbytes = 11 Kb
27-Oct-2010 23:00:07 RXbytes = 11 Kb TXbytes = 9 KbIs this output data gathering style valid?
I want to give this report to my boss using spreadsheets, but I want to put comments like :
1. at what hour is the network busiest?
2. at what hour is the network the not-busiest?
How do I sort this output from busiest (descending order)?
Thanks a lot,
Ms KHi again markie,
This is my actual source code of eth0stat.sh:
# File: eth0stat.sh
# Purpose: Gather network traffic increase between readings
# Command: . ./eth0stat.sh
ifcmd='/sbin/ifconfig eth0'
timestamp=$(date "+%D %T")
logfile=/u01/Monitor/eth0stat.txt
old_rxbytes=$RXBYTES
old_txbytes=$TXBYTES
get_rxbytes() {
$ifcmd | grep "RX bytes" | cut -d: -f2 | awk '{ print $1 }'
get_txbytes() {
$ifcmd | grep "TX bytes" | cut -d: -f3 | awk '{ print $1 }'
RXBYTES=$(get_rxbytes); export RXBYTES
TXBYTES=$(get_txbytes); export TXBYTES
if [ $old_rxbytes > 0 ]; then
diff_rxbytes=$(($RXBYTES - $old_rxbytes))
else
diff_rxbytes=0
fi
if [ $old_txbytes > 0 ]; then
diff_txbytes=$(($TXBYTES - $old_txbytes))
else
diff_txbytes=0
fi
echo "$timestamp,RXbytes:$diff_rxbytes,TXbytes:$diff_txbytes" >> $logfileI created the new program you gave me (eth0stat.sh) and called it from cron every our, but I got this result:
11/01/10 15:00:07,RXbytes:0,TXbytes:0
11/01/10 16:00:07,RXbytes:0,TXbytes:0
11/01/10 17:00:07,RXbytes:0,TXbytes:0
11/01/10 18:00:07,RXbytes:0,TXbytes:0
11/01/10 19:00:07,RXbytes:0,TXbytes:0
11/01/10 20:00:07,RXbytes:0,TXbytes:0
11/01/10 21:00:07,RXbytes:0,TXbytes:0
11/01/10 22:00:08,RXbytes:0,TXbytes:0
11/01/10 23:00:07,RXbytes:0,TXbytes:0
11/02/10 00:00:07,RXbytes:0,TXbytes:0
11/02/10 01:00:08,RXbytes:0,TXbytes:0
11/02/10 02:00:08,RXbytes:0,TXbytes:0
11/02/10 03:00:07,RXbytes:0,TXbytes:0
11/02/10 04:00:07,RXbytes:0,TXbytes:0
11/02/10 05:00:07,RXbytes:0,TXbytes:0
11/02/10 06:00:08,RXbytes:0,TXbytes:0
11/02/10 07:00:08,RXbytes:0,TXbytes:0
11/02/10 08:00:07,RXbytes:0,TXbytes:0
11/02/10 09:00:08,RXbytes:0,TXbytes:0
11/02/10 10:00:08,RXbytes:0,TXbytes:0The output has all 0 bytes :( . Is there something I missed out?
I compared it to the other one I got:
1-Nov-2010 15:00:07 RXbytes = 10 Kb TXbytes = 9 Kb
1-Nov-2010 16:00:07 RXbytes = 10 Kb TXbytes = 9 Kb
1-Nov-2010 17:00:07 RXbytes = 10 Kb TXbytes = 9 Kb
1-Nov-2010 18:00:07 RXbytes = 10 Kb TXbytes = 9 Kb
1-Nov-2010 19:00:07 RXbytes = 10 Kb TXbytes = 9 Kb
1-Nov-2010 20:00:07 RXbytes = 10 Kb TXbytes = 9 Kb
1-Nov-2010 21:00:07 RXbytes = 10 Kb TXbytes = 9 Kb
1-Nov-2010 22:00:08 RXbytes = 10 Kb TXbytes = 9 Kb
1-Nov-2010 23:00:07 RXbytes = 11 Kb TXbytes = 9 Kb
2-Nov-2010 00:00:07 RXbytes = 10 Kb TXbytes = 9 Kb
2-Nov-2010 01:00:08 RXbytes = 10 Kb TXbytes = 9 Kb
2-Nov-2010 02:00:08 RXbytes = 10 Kb TXbytes = 9 Kb
2-Nov-2010 03:00:07 RXbytes = 7 Kb TXbytes = 6 Kb
2-Nov-2010 04:00:07 RXbytes = 256 b TXbytes = 0 b
2-Nov-2010 05:00:07 RXbytes = 320 b TXbytes = 0 b
2-Nov-2010 06:00:08 RXbytes = 0 b TXbytes = 0 b
2-Nov-2010 07:00:08 RXbytes = 466 b TXbytes = 0 b
2-Nov-2010 08:00:07 RXbytes = 1 Mb TXbytes = 19 Mb
2-Nov-2010 09:00:08 RXbytes = 1 Mb TXbytes = 22 Mb
2-Nov-2010 10:00:08 RXbytes = 12 Kb TXbytes = 91 KbThe is seem to be movement starting at 8am Nov 2, 2010.
Please help me debug the eth0stat.sh.
Thanks again so much -
im looking for a way to monitor the bandwidth and graphically identify the real time traffic on several ports in our network.
The tool would have to run on a windows workstation which woudl have multple NICS connected to cisco 3750G switches setup wtih SPAN sessions.
the data received should be separted and displayed in real time graphically.
Kind of like what Perfromance Monitor would do.
Does anyone know of such a tool
thank you in advance
JSWHi, we have just swapped all our avaya switches with catalyst 2960 (12, 24 and 48 ports) and 3750 (48 ports with 10gig module).
How do I find what port I should monitor for bandwith graphs?
Target[10.0.0.22_loc1]: 1:@10.0.0.22: -
Looking for an internal traffic monitor for a RV042
I have an RV042 router and I'm looking to monitor the total upstream and downstream traffic from within the router. I know there is tons of software that I can put on a network computer to monitor traffic, but is there any software that I can put on the router itself that will monitor the traffic from within the router?
James,
This doesn't reside on the RV042, but I think its as close as you're going to get. Check out these threads:
http://www.dslreports.com/forum/remark,16725884
http://forums.cacti.net/about35626.html
Another popular one is Kiwi (Solarwinds now)
There are also many other SNMP monitoring tools you could use.
Best,
David
Please rate helpful posts and identify correct answers. -
Unknown network traffic / router traffic monitoring
So I got a new PC with windows 7 on it, and I installed this gadget that monitors network traffic, and it shows a lot of traffic that my local PC isn't showing, so I am thinking there is something running on the LAN that I can't see. I was looking to find a live, better program to monitor the actiontec router, for traffic. anyone know of anything that can maybe show me who is using all the bandwidth on my network?
i have found software for Linksys, but nothing for the Actiontec.
Thanks,
Quasimodem
Fios in Florida
Solved!
Go to Solution.Keep in mind that when looking at Wireshark (sniffer) software there are different types of traffic:
Unicast
Broadcast
Multicast
Unicast is traffic between two devices. You will see the traffic between the PC with wireshark and another device on your local network such as a printer, another PC or the Router. You should not see traffic between another PC and the Internet for example. Using a phone as an example some calls you and the conversation is between you and the person on the other end of the phone. This is unicast traffic. Using defaults of the actiontec, IP address seen will be 192.168.1.1 for the router and 192.168.1.2-99 for devices on your network. If you have the TV service, 192.168.1.100-1xx is used for the cable boxes.
Broadcast traffic is traffic sent to all devices. Its not directed toward a particular PC but rather usually looking for information. In a sniffer trace you will see broadcast traffic. Going back to the phone example, someone makes an announcement on an overhead intercom system that is broadcast traffic. Broadcast traffic will be seen as 192.168.255.255
Multicast traffic is traffic from one device for many devices. Usually used in video feeds. Using the phone system as an example someone wishes to tell a group of people something so instead of calling each person up and telling them each person who wants the information joins a conference bridge. Anyone is allowed to listen but only those that wish to get the information receive it. Generally how multicast works. Multicast traffic will be seen as IP address 224.x.x.x or something of the sorts where the address will be 2xx.x.x.x.
I hope this makes sense. Probably more information than you needed but at least it will help you understand what wireshark is telling you. -
Hi! I bought a WRT310N wireless router a few weeks ago and I must say I am pretty satisfied with it.
However, I've been looking for something to monitor the traffic on my local network. The easylink advisor just shows me who is connected. Is there a more advanced software that makes me monitor more exactly the traffic from each connected computer?
Thanks for the help!
//ChrisNo. Not with these cheap routers. There is no way to monitor the traffic going through the router nor the LAN traffic going through the switch.
Maybe you are looking for
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