Starting from version 1.2.2 Nectus includes web-based SSH client
To start a web-based SSH session to any device right-click on device and select “Open SSH Session” in context menu (session will originate from Nectus server IP)
Entries by Web Master
How to create a Command Script?
To create a new command script open “Tools->Command Scripts” in main menu and select “Add New Script” Button. Here is an example of the Script for Cisco router to push AAA config change. To push the command script to devices, Press “Play” button, Select target Device View and press “Run”
Ping plotter is included in Nectus 1.2.6
Starting from Nectus version 1.2.6 Ping plotter functionality was added to a Toolset located in “Tools” main menu. Specify up to 10 IP address and track latency and availability in real time. Export metrics to a CSV file with 1 second resolution.
Why my devices are in “All CDP Devices” category only?
All network devices that responds to SNMP queries are being placed in “All SNMP Devices” category, furthermore Nectus tries to obtain list of all CDP neighbors from SNMP enabled devices and tries to communicate to all CDP neighbors via SNMP. If CDP neighbor does not answer to SNMP queries is is being placed in “ALL […]
How to create Sites and assign discovered devices to Sites
When SNMP enabled device is discovered for the first time it is placed in default group “Unassigned” in “All Sites” category. User must manually move devices from “Unassigned” group to specific site where each device belongs to. Initially each Site has to be manually defined. To create a Site right click on “All Sites” and […]
Network device icon customization in Nectus
Nectus comes with hundreds of standard device icons but sometimes user may want to change default icon for specific device type to something different. Supported icon format is SVG with width=”168px” height=”114px. To change device icon, right click on Device Category and select “Properties” Select “Upload SVG icon from Local Disk
Configuring Netflow collector integration on Nectus 1.28
Starting from version 1.28 Nectus supports processing of inbound Netflow packets. To enable Netflow functionality separate standalone Server or VM is required for Storage. 64 bit MySQL Server has to be installed on Netflow storage VM and DB Name, Root credentials and TCP port for Netflow Storage DB has to be configured on main Nectus Server […]
Netflow collector functionality added to Nectus starting from version 1.2.8
Netflow collector functionality added to Nectus starting from version 1.2.8
How to monitor reachibilty of external resources with Nectus?
In addition to monitoring SNMP enabled devices located inside of your network Nectus can be configured to monitor ICMP reachibility of any external IP address by adding it to a list of “IP Monitors” First you need to define IP Monitor Group name where IP address will be added to: Make sure that “Monitoring” flag […]
How Nectus selects Management interface for the discovered devices?
For each router or switch found during discovery Nectus has to select one interface that will be used as a primary monitoring interface for basic reachibility checks, destination for SNMP queries etc.. Here is the selection order logic that implemented in Nectus Discovery Service: Select Interface that has assigned IP address associated with current DNS […]
How to exclude specific subnets from Network Discovery?
To exclude specific subnet from Network Discovery add it to “Excluded subnets” list in “Settings -> Network Discovery Settings” This will exclude this subnets from ICMP scan phase and subsequently prevent live devices in this subnets from being queried via SNMP.
Interface Utilization issues on Cisco GRE tunnels (IOS-XR)
By default when you create a GRE tunnel (tunnel-ip1) on ASR9K routers it gets assigned default Bandwidth value of 8Kbps which usually causes utilization monitoring confusion as Tunnel can carry as much traffic as its hardware parent interface where tunnel is anchored to. You would see utilization values as high a 10,000% percent with default Bandwidth […]
How to read Cisco device S/N via SNMP?
During network discovery phase Nectus collects S/N for each device that responds to basic SNMP queries. One of the problem with Cisco Devices is that different platforms uses different OID to store S/N. Following OIDs are being used for Cisco: .1.3.6.1.2.1.47.1.1.1.1.11.1 .1.3.6.1.2.1.47.1.1.1.1.11.2 .1.3.6.1.2.1.47.1.1.1.1.11.10 .1.3.6.1.2.1.47.1.1.1.1.11.22 .1.3.6.1.2.1.47.1.1.1.1.11.1001 .1.3.6.1.2.1.47.1.1.1.1.11.24555730 .1.3.6.1.4.1.14179.1.1.1.4.0 .1.3.6.1.4.1.2467.1.34.4.0 .1.3.6.1.4.1.437.1.1.3.1.22.0 .1.3.6.1.4.1.9.20.1.1.1.1.3.0.1.3.6.1.4.1.7505.1.1.1.0 .1.3.6.1.4.1.9.6.1.101.53.14.1.5.1 .1.3.6.1.4.1.9.9.92.1.1.1.2.1 .1.3.6.1.4.1.9.3.6.3.0 .1.3.6.1.4.1.3076.2.1.2.22.1.63.0 .1.3.6.1.4.1.9.5.1.2.19.0 […]
SNMPv3 AES Cipher bug in IOS-XR 5.3.4 (ASR9000)
Just run into a IOS-XR bug with running SNMP v3 with AES-128 cipher (as well as AES-192 and AES-256) on ASR 9000 Routers running 5.3.4 Code. Apparently Cisco BUG ID CSCvd35831. Fixed in 6.2.xx code. Upgrading ASR9K is fun that can take 4-5 hours per box but having SNMP communications secure is more important. Consider upgrading. […]
How to prevent specific network device types from being discovered?
Sometimes specific device categories (UPS units, Printers etc) must be excluded from network discovery due to their low importance from the Network Monitoring prospective or due to security concerns or because of their impact on Nectus processing load. This can be achieved with OID ignore list. For example we want to prevent all Xerox ApeosPort Series […]
How to get Interfaces’ ifIndex values via SNMP
To obtain list of ifIndex values for all interfaces for given device SNMP polling agent has to send SNMP GET BULK request for the following OID: .1.3.6.1.2.1.2.2.1.1 Response Example: ‘.1.3.6.1.2.1.2.2.1.1.1’ => “1” ‘.1.3.6.1.2.1.2.2.1.1.2’ => “2” ‘.1.3.6.1.2.1.2.2.1.1.3’ => “3” ‘.1.3.6.1.2.1.2.2.1.1.4’ => “4” ‘.1.3.6.1.2.1.2.2.1.1.5’ => “5” ‘.1.3.6.1.2.1.2.2.1.1.6’ => “6” ‘.1.3.6.1.2.1.2.2.1.1.7’ => “7” ‘.1.3.6.1.2.1.2.2.1.1.8’ => “8” ‘.1.3.6.1.2.1.2.2.1.1.9’ => […]
Generating Site level network topology with Nectus
This short video shows basic steps to generate site level network topology
Nectus Datasheet
Nectus Datasheet Medium
SNMPv3 Configuration example for IOS-XR (ASR9k)
IOS-XR SNMP v3 configuration example for username “user_des” snmp-server group admins v3 priv snmp-server user user-des admins v3 auth md5 “authpass” priv des56 “privpass” SystemOwner this configuration will use MD5 hash for authentication and DES cipher (DES56) for encryption. IOS-XR (as of 5.3.4 code) also supports 3DES – 168 bit 3DES algorithm for […]