Network Monitoring & Management


Monday, October 23, 2006

SNMP Simulators

SNMP simulators are SNMP agents which models routers and hosts. It appears to the SNMP Network Management Applications as if it is talking to actual devices. In various conditions they are very useful and helps in saving cost and time, some of these are as follows

1) Demonstrations of network management software (NMS).
2) Development of NMS.
3) For stress/performance/scalability testing of newly developed NMS modules.
4) For training purposes etc. etc.

I use them specially when actual Cisco router is unavailable to me or want to test under development modules. Some SNMP simulators also simulates SNMP error conditions and simultaneous simulation of number of agents with different IP addresses and I recommends these types of simulators because they give you chance of scalability testing and debugging of your modules under various error conditions in a large sized simulated network.

Here are some of my favorite SNMP simulators, if you have some more then please post them here.

1) MIMIC SNMP agent simulator.

- Supports SNMP v1/v2/v3.
- Can compile any SMI-compliant MIB to extend your set of devices.
- Ships with a large number of pre-compiled MIBs, networks and devices from the leading networking companies.
- Support pre compiled MIB and
- Creates a network of up to 10,000 SNMP-manageable devices on one Intel-based PC or Sun Sparc


2) AdventNet Simulation Toolkit

- Ability to simulate 10000+ agents simultaneously.
- Supports SNMP v1/v2/v3.
- Support for SNMPv1,v2,v3 traps and SNMP v2, v3 Informs.
- Simulation of SNMP v1,v2,v3 error conditions from UI or using scripts.

Screen shots:
Deepesh Goud 11:49 PM | 3 comments | | Permalink

Thursday, October 05, 2006

NetFlow vs. sFlow

NetFlow and sFlow are traffic reporting mechanisms that manufactures have embedded into enterprise-level switches and routers.

This white paper which nicely describes NetFlow and sFlow technologies, their comparison with each other and their uses. Take a look when you have the time.

Format: PDF


Deepesh Goud 4:09 AM | 0 comments | | Permalink