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- Sensorprobe
- [GS724Tv4] SNMP Monitoring With CACTI - Snmpwalk - NETGEAR ..
- Netgear GS724T - Cacti
My CACTI server is a Debian Jessie with snmp Package. Cacti is OK, lots of other servers a graphed in. When i add my GS724Tv4 as a device in Cacti, Cacti run in snmp time out. For testing, i have use PRTG client under Windows = OK, i can see and graph/monitor my switch via SNMP. Who is monitoring a GS724Tv4 with success? I've been using cacti for a while on a HP switch, but I found it time to upgrade to a new Netgear Switch. I added the switch as new device in cacti, and cacti sees the switch and shows me a little info about it. But, it doen't shows me the ports on the switch. Feb 15, 2011 In standalone mode each switch has its own IP address and is monitored by Cacti via SNMP (generic SNMP-enabled host). IPs are 192.168.30.241 and 192.168.30.242. Everything is okay. When I change to stack mode (GS748TS is master unit and GS724TS is just a member) I am not able to monitor the master unit (192.168.30.241) anymore.
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Pages : 1 | 2>
- Table of Contents
- Creating a Device
- Creating the Graphs
At this point, you probably realize that graphing is Cacti's greatest strength. Cacti has many powerfulfeatures that provide complex graphing and data acquisition, some which have a slight learning curve.Do not let that stop you however, because graphing your network is incredibly simple.
The next two sections will outline the two basic steps which are typically required to create graphs formost devices.
The first step to creating graphs for your network is adding a device for each network device thatyou want to create graphs for. A device specifies important details such as the networkhostname, SNMP parameters, and host type.
Cached
To manage devices within Cacti, click on the Devices menu item.Clicking Add Crack autocad land 2009 64 bit. will bring up a new device form. The first two fields,Description and Hostname are the only two fields thatrequire your input beyond the defaults. If your host type is defined under the host templatedropdown, be sure to select it here. You can always choose 'Generic SNMP-enabled Host' if you arejust graphing traffic or 'None' if you are unsure. It is important to remember that the hosttemplate you choose will not lock you into any particular configuration, it will just providemore intelligent defaults for that type of host.
Figure 7-1. Adding a New Device
The field definitions are as follows
Table 7-1. Device Field Definitions
Field | Description |
---|---|
Description | This description will show up in the first column of the device list.You may refer to it e.g. in graph titles |
Hostname | Either an IP address or a hostname.The hostname will be resolved using the standard host resolving mechanisms,e.g. Dynamic Name Services (DNS) |
Host Template | A Host Template is a container for a list of graph templatesthat will be related to this host. |
Notes | New with cacti 0.8.7.Add notes to a host to add arbitrary text. |
Disable Host | Exclude this host from being polled.This is of particular value, if a device is no longer available,but should be kept e.g. as a reference. |
Availability/Reachability Options | |
Downed Device Detection | NONE: Deactivate downed host detection PING and SNMP: perform both tests SNMP: verify SNMP check on OID .1 and .1.3 ICMP: perform a ping test, see below |
Ping Method | Available only for 'PING and SNMP' or 'PING' ICMP: perform ICMP tests. Requires permissions UDP: perform a UDP test TCP: perform a TCP test |
Ping Port | Available only for UDP/TCP PING test types. Please define the port to be tested here.Make sure, that no firewall intercepts the tests |
Ping Timeout Value | After this time, the test fails. Measuredin units of milliseconds |
Ping Retry Count | The number of times Cacti will attempt to ping a host before failing. |
SNMP Options | |
SNMP Version | Version 1: Use SNMP Version 1.Be aware, that 64bit counters are not supported in this SNMP version Version 2: Referred to as SNMP V2c in most SNMP documentations Version 3: SNMP V3, supporting authentication and encryption |
SNMP Community | SNMP read community for this device. |
SNMP Port | Enter the UDP port number to use for SNMP (default is 161). |
SNMP Timeout | The maximum number of milliseconds Cacti will wait for an SNMP response(does not work with php-snmp support). |
Maximum OID's Per Get Request | This is a performance feature. Specifies the number ofOID's that can be obtained in a single SNMP Get request. NOTE: This feature only works when using Spine Descargar dj virtual 8. NOTE: Some devices do not support values > 1 |
Security Options for SNMP V3 | |
SNMP Username | The username of an SNMP V3 createUser statementor equivalent |
SNMP Password | The authpassphrase of an SNMP V3 createUser statementor equivalent |
SNMP Auth Protocol | The authentication type of an SNMP V3 createUser statementor equivalent. Select either MD5 or SHA. This entry defaults to MD5. |
SNMP Privacy Passphrase | The privacy passphrase of an SNMP V3 createUser statementor equivalent. |
SNMP Privacy Protocol | The privacy protocol of an SNMP V3 createUser statementor equivalent. Select either DES or AES. This entry defaults to DES. |
SNMP Context | When using the View-Based Access Control Model (VACM), it is possible to specifyan SNMP Context when mapping a community name to a security name with acom2sec directive, with the groupdirective and the access directive. This allowsfor defining special access models. If using such a parameter with yourtarget's SNMP configuration, specify the context name to be used to accessthat target here. |
After saving your new device, you should be redirected back to the same edit form with someadditional information. If you configured SNMP for this host by providing a valid community string,you should see various statistics listed at the top of the page. If you see 'SNMP error' instead,this indicates an SNMP problem between Cacti and your device.
Towards the bottom of the page there will be two addition boxes, Associated DataQueries, and Associated Graph Templates. If you selected a hosttemplate on the previous page, there will probably be a few items in each box. If there is nothinglisted in either box, you will need to associate at least one data query or graph template withyour new device or you will not be able to create graphs in the next step. If no availablegraph template or data query applies to your device, you can check the Cacti templates repositoryor create your own if nothing currently exists.
Sensorprobe
A Word About SNMP
The SNMP version that you choose can have a great effect on how SNMP works for you inCacti. Version 1 should be used for everything unless you have reason to choose otherwise.If you plan on utilizing (and your device supports) high-speed (64-bit) counters, you mustselect version 2. Starting with Cacti 0.8.7, version 3 is fully implemented.
The way in which Cacti retrieves SNMP information from a host has an effect on whichSNMP-related options are supported. Currently there are three types of SNMP retrievalmethods in Cacti and are outlined below.
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Table 7-2. SNMP Retrieval Types
Type | Description | Supported Options | Places Used |
---|---|---|---|
External SNMP | Calls the net-snmp snmpwalk and snmpget binaries that are installed on your system. | All SNMP options | Web interface and PHP poller (poller.php) |
Internal SNMP (php-snmp) | Uses PHP's SNMP functions which are linked against net-snmp or ucd-snmp at compile time. | Version 1 Only (Community and Port) | Web interface and PHP poller (poller.php) |
Spine SNMP | Links directly against net-snmp or ucd-snmp and calls the API directly. | All SNMP options | C-Based Poller (Spine) |
SNMP V3 Options Explained
[GS724Tv4] SNMP Monitoring With CACTI - Snmpwalk - NETGEAR ..
SNMP supports authentication and encryption featureswhen using SNMP protocol version 3 known asView-Based Access Control Model (VACM).This requires, that thetarget device in question supports and is configured forSNMP V3 use. In general, configuration of V3 options istarget type dependant. The following is cited fromman snmpd.conf concerning user definitions
Netgear GS724T - Cacti
VACM directives are explained fromman snmpd.conf as follows
As an example, following definitions in the snmpd configurationcreate a set of definitions for use with SNMP V3
When adding this stuff to your snmp configuration, pleaseremember to restart the agent. Verify this setting using