Questions tagged [snmp]

Simple Network Management Protocol (SNMP) is used for managing devices on IP networks. It is most often used to query statistics for network equipment.

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Cisco 3750: SNMP

On my Cisco 3750G, i have SNMPV3 enabled, this is working perfectly with Zabbix. I would like to separate production flows from supervision flows, Do you know if it's possible to enable SNMP ...
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152 views

Unable to see packet drops on tunnels

I have the following topology set on AWS where there are 4 CSR 1000v Routers deployed and Segment Routing enabled in which the Segment Routing Headend is R1 and the destination is R3. I aim to send ...
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How to filter the physical port of the switch through snmp?

I tried using snmp to get ifdescr, I think the interface name containing Ethernet might be a physical port, but I am not sure. In addition, the interface in dot3StatsIndex is also like a physical ...
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Why snmp communities rw and ro have to be both activated on a switch

Why snmp communities rw and ro have to be both activated on a switch? I have noticed that i have to both configure communities for rw and ro. Is it necessary to have both in order to successfully ...
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Snmp walk issue

I'm using a program that polls the port vlans from the switches by snmpv2 (Snmp walk is used) but im having trouble polling the port vlans from hp switches. Does anyone know any reason that prevents ...
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Why I cannot see packet loss on GRE over capacity tunnels?

I have the following topology set on AWS where there are 4 CSR 1000v Routers deployed and Segment Routing enabled in which the Segment Routing Headend is R1 and the destination is R3. I aim to send ...
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61 views

Why using Telnet with SNMP? [closed]

Recently I got a question asking what is the reason to use SNMP in combination with telnet since using 2 protocols is not a good practice. I did a research on the topic but could not find reasonable ...
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30 views

Dell N-Series SNMP, resolve mac adress from interface list

I can easily pull the interface list status, by doing a OID walk. This is how I can tell whether a port is online or offline. To physically resolve the location I then walk. (1.3.6.1.2.1.2.2.1.2) ...
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56 views

Is it possible to differentiate cisco ports on monitoring system via snmp?

I am managing some cisco switches in my monitoring software (zabbix), and it provides useful insights that I would like to monitor: Warning on link up / down Warning when ports are on half duplex ...
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47 views

SNMP timeouts on Nexus 9000 (cache is filled up ?)

I've a problem with Nexus 9000 SNMP stack. We've topology where are 4 SNMP servers (Prometheus model) tries to pull interface data every 30 seconds. Seems like for these type of Nexuses 9000 C9372PX (...
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snmp server and/or switch, help [closed]

i own and have configured a c2950-24 L2 switch. upon starting it up it asked if i wanted to configure snmp. i followed threw some steps but i have no clue how to actually use snmp. my switch logs when ...
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103 views

Understanding Throughput of interfaces problem on Cisco Routers

I have the following topology set on AWS where there are 4 CSR 1000v Routers deployed and Segment Routing enabled in which the Segment Routing Headend is R1 and the destination is R3. I aim to send ...
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1answer
82 views

Collect UDP packets lost during iPerf test

I'm testing my network infrastructure where I'm using iPerf and UDP protocol. I'm using the following: On the server side: ubuntu@ip-172-0-1-11:~$ iperf -s -u and the client side: ubuntu@ip-172-2-...
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54 views

SNMP object not in the MIB

i'm working on an SNMP app that needs the ptopo MIB object with the object ID of 1.3.6.1.2.1.79 after enabling SNMP v3 on 2 layer 3 switches dell z9100-on brocade slx 9140 and creating a view on ...
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Unable to get NetFlow flow in Cisco CSR1000v on AWS

I'm trying to use NetFlow Traffic Analyzer of SolarWinds or any NetFlow Monitor in my Cisco CSR1000v routers which are deployed on AWS. I am unable to see any NetFlow flows in the NetFlow Traffic ...
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The SNMP do not up the 161 port

I have a HUAWEI S5720 Switch(manage IP: 10.10.11.118), and I opened the snmp service of it: the configuration is: # ...
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73 views

Decreasing SNMP update timer on IOS-XR (CISCO ASR)

I've a case where i'm trying to poll SNMP information every 10 seconds from a Cisco IOS-XR devices (interfaces mib). Seems like CISCO IOS-XR updates SNMP information every 15secs, so sometimes ...
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take oid of interface on router via snmpwalk for monitoring

Could someone explain how to get oid value of an interface via an snmpwalk ? I have some value like : iso.3.6.1.2.1.2.2.1.2.15729260 = STRING: "vlan 110" Thanks in advance for help
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187 views

Cisco IOS Version changes for SNMPv3 server-group context

I'm trying to understand switch mapping using SNMPv3. It's come to my attention that the group(user) who is authenticating needs access to thecontext for mapping out VLANs. I've figures out this can ...
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In a reboot/Shutdown event, would SNMP trap be sent before the event occurrence or after that?

When a device is getting ready to shut down or reboot, Would the SNMP agent send the trap notification to the destination host before the shutdown/reboot event, or after that? What's the general rule ...
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451 views

Palo Alto monitor bandwidth usage using SNMP

I'm trying to monitor bandwidth usage on my Palo Alto firewall using SNMP. However only the ifInOctets & ifOutOctets counters of VLAN interfaces are updated. The counters for real interfaces are ...
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What exact does MIB represent in SNMP? How is it different from OID?

In SNMP, we represent each entity of information using object and to identify each object uniquely, we use OID (Object Identifier). Now there is another terminology - MIB. I know it stands for "...
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137 views

What's the difference between dot1dTpFdbPort and dot1qTpFdbPort, and what are the octets before the last 6 (

So ... I kinda struggle to understand the difference between dot1dTpFdbPort Either the value '0', or the port number of the port on which a frame having a source address equal to the value of the ...
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How to: Setting up SNMP on various Cisco platforms & Can you recover or configure a switch using SNMP?

How do you setup SNMP on different Cisco switches or routers? Is it possible to limit the IP addresses/subnets, that can access the SNMP communities via access lists? How do you recover or configure ...
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398 views

Network Bandwidth Utilization with SNMP

I have configured the bandwidth Utilization with the below formula, data i am getting after snmpwalk. Utilization = ( ifinOctect * 8 * 100 ) /( ifspeed * delta_time ) now i want to know if what is ...
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Juniper EX4300 / MAC limiting SNMP trap

I have the following device and configuration: Model: ex4300-32f Junos: 17.3R3-S3.3 show configuration groups GLOBAL-SNMP { snmp { client-list MANAGERS { 10.8.9.0/28; } community TEST-COMMUNITY ...
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109 views

SNMPv3 traps on Catalyst 9500

with our new Catalyst 9500 switches we want to use snmpv3 to send traps. Thats what I configured: snmp-server engineID local 1234567890ABCEDF snmp-server group SG_SERVERFARM v3 priv snmp-server trap-...
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51 views

Abstract service primitive

In SNMP RFC documents, often the concept of abstract service primitive (ASP) is used. What is ASP in fact ? I think it is also used in ISO OSI.
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459 views

Is there a test/example/dummy SNMP trap OID?

I want to send a test trap from a router, just to make sure SNMP is set up correctly, the server is receiving traps, etc. I could use some innocuous or irrelevant trap, but is there a specific trap ...
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497 views

How to recognize port type of cisco switch via SNMP?

I would like to filter just copper ports with snmp walks from a Cisco 2960 L2 switch. I already searched the Cisco SNMP Mibs but I did not found anything if the port is a copper or SFP port. ifType (...
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51 views

SNMP traps for RF systems: where to start?

I've been given the task of taking various status bits from an embedded RF device and asked to turn them into SNMP Traps. I have the SNMP library but I lack the knowledge on where to get or create the ...
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317 views

How to get per-process memory use from Cisco switches via SNMP

I'm trying to get per-process memory use from Cisco switches via SNMP. I've found an article suggesting you can subtract CISCO-PROCESS-MIB.cpmProcExtMemAllocatedRev and CISCO-PROCESS-MIB....
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259 views

SNMPv3 Failed authentification warnings (traps)

Is't someshow possible to enable SNMPv3 failed/wrong authentification events to be sent to some logging server or just the log message to be triggered on device itself ? I talking about IOSXR/IOS/IOS-...
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79 views

SNMP returns strange “bits sent/received” values on a particular port, why?

I have a HP V1910 Switch in my office. I have set up monitoring via SNMP on my local Zabbix server, and everything looks really good on almost all ports (for example, when I use iperf to test ...
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LAN side 1Gb link showing WAN 4Mbps throughput in SNMP

I am a-bit confused here. I have a FW connected to L2 switch then to an ISP router. My ISP link has a 4Mb capped on the egress. [My FW] <-1Gb link-> [p0 L2 Switch p1] <-1Gb link-> [ISP ...
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119 views

Can I get what filters are applied to an interface via SNMP?

I have some firewall filters on juniper devices- ex3300s make up the majority of them. I've been looking for an oid that will let me associate an IFL with the filters that are on it, and I've yet to ...
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138 views

Cisco Switch triggers config trap on reboot

We have a cisco switch in our network that is configured to send config change traps on a specific host. But when the device reboots due to some physical issue, the device triggers the config traps. ...
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89 views

How to get Adtran TA5000 23 firmware information with an SNMP request?

I'm looking for any SNMP request that I could use through a Linux terminal to get the firmware information of all our ADTRAN DSLAMs that we currently have in the field(there are close to 18,000). I ...
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Cisco iOS SNMP OID for Vlan on Port

I am working on setting up SNMP monitoring for our internal switched network in Zabbix. I have everything working now, but the template I am using discovers all ports on the switch, and I really only ...
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In an agentless SNMP device, at what level does the SNMP agent run? In the Hardware? In the Operating system? Or somewhere else?

I know that there are devices that now support agentless SNMP configuration. However I believe that the SNMP agent application has to run somewhere. It has to be some code running somewhere stored on ...
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191 views

SNMP Get routes on Checkpoint returns integer value for IPADDRESS field

I'm trying to execute SNMP-Get request on Checkpoint to get IP address of a route with OID .1.3.6.1.4.1.2620.1.6.51.1.2. Here we can see that syntax of this field is SYNTAX IpAddress. However, when I ...
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430 views

Search for IP addresses in SNMP data field using Wireshark

TLDR: How can I find IP addresses that is communicated via SNMP in the data =>variable-bindings field ? I am using wireshark to view my pcap and I use the snmp filter. But I would like to go ...
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net-snmp Creating my own MIB: No Such Instance currently exists at this OID [closed]

First thing first. I want to create my own MIB. Please pardon me if I'm asking a simple question as I'm a newbie to SNMP and I'm struggling on this from couple of weeks. I have already been through ...
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Access list with SNMP v3 Cisco

I was wondering if someone could help me with something. I am trying to set up SNMP v3 but with access control. Now, I have made the user and group. That's all fine, but I can't seem to get the access ...
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328 views

How to send a snmpget request to a remote router? [closed]

I need to get the IP routing table from a remote router which is not situated on my network, got this from http://www.sharontools.com/online-lab/device/?q=cisco-r2 i have enabled snmp and created snmp ...
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1answer
906 views

How to copy Running Config from a switch using SNMP commands on Cisco ASR1002?

I trying to copy a running config from a cisco switch using the snmp commands on a Cisco ASR1002. On the Cisco ASR I enabled snmp-server manager by using this command: conf t snmp-server ...
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452 views

SNMP agent on embedded device, No such object available on this agent at this OID

SNMP agent on an embedded device. When I query SNMP device for the particular private enterprise OID object, it says "No such object available on this agent at this OID". snmpget -v2c -c public 10.x....
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799 views

snmpv3 authentication with sha and md5

I am facing this issue in my snmpv3 deployment. In some of catalyst cisco switches I am using snmpv3 with authpriv as sha and aes256. The porblem is that when I run an snmpwalk for v3 credentials it ...
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Monitor Vyatta router VPN through SNMP

I would like to monitor/manage VPN /Tunnel for Vyatta router 5600 through SNMP . Can't find mib or specific OID for the Vyatta router 5600. ? Please answer with Mib or SNMP OID . Thanks in advance
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SNMP OID to detect network equipment vendor

Is there a SNMP OID to detect network equipment vendor name? For Cisco and Juniper equipment I have used sysDescr.0(.1.3.6.1.2.1.1.1.0), which among other data includes the vendor name. However, this ...