Tshoot: High CPU utilization while flexlink and multicast were operating.

Equipments and tools 1. Windows 2003 server with Orion NPM installed. For traffic and network health monitoring. 2. Windows XP with VLC media player version 0.8.6c, this is the video server. 3. Windows 7 with VLC media player version 0.8.6c, this is the video client. 4. One WS-3560-24TS-E, Catalyst switch that has flexlink feature. 5. … Continue reading Tshoot: High CPU utilization while flexlink and multicast were operating.

Maintenance: Netflow

Catalyst 3560 does not have netflow As confirmed with Cisco feature navigator, there's no netflow for 3560 not even version 1... Cisco 871 Although this router is EoL, it has netflow version 1, 5 and 9. Default is version 1 when I first turned netflow on. I changed it to version 5 as PRTG support … Continue reading Maintenance: Netflow

For Testing only: Broadcast to multicast translation and multicast routing using MLS

Warning: Do not use these configurations as it is in actual deployment. This configuration is setup to test if the MC is forwarded out to the intended destination without any mc receiving application running. For this configuration we will use the default vlan 1, for the actual application you can use any vlan that you … Continue reading For Testing only: Broadcast to multicast translation and multicast routing using MLS

Proof of concept: BC-MC and MC-BC feasibility using Cisco routers/MLS

Continue from the previous post. This post shows the proof of concept done. Pre-requisite tools: Netcat for Windows , wireshark and two computers. Commands: debug ip packet detail (this will show the layer 4 information as well) and debug ip mpacket Netcat is originally a unix utility, it is known as the swiss army knife … Continue reading Proof of concept: BC-MC and MC-BC feasibility using Cisco routers/MLS

How to convert from broadcast to multicast and vice versa using Cisco router.

Scenario: ABC corporation and XYZ company has merged into one huge organization known as EFG. Your employer company - MTA has been engaged to come out a solution to merge the IT departments of both companies without changing the existing corporate IP addresses and existing softwares. Two departments reside on different network, so in order … Continue reading How to convert from broadcast to multicast and vice versa using Cisco router.

Flawed configuration: Broadcast to Multicast and Multicast to broadcast translation

WARNING: THE BELOW CONFIGURATION HAS FLAWS. IP PIM SPARSE-MODE NEEDS A RENDEZVOUS POINT WHICH IS NOT DEFINED HENCE MULTICAST ROUTING IS NOT POSSIBLE. I WILL READ UP MORE ABOUT PIM TO UNDERSTAND BETTER. THIS POST IS RESERVED FOR ARCHIVE. I just found out that Multicast is a hated subject by many people, in my opinion … Continue reading Flawed configuration: Broadcast to Multicast and Multicast to broadcast translation

Local broadcast and directed broadcast.

From Cisco Learning Network, Brian replied to the question I asked. Sep 10, 2010 6:09 AM in response to: Cyrus Re: About broadcast. Cyrus, In reference to your question, "what's the difference between 255.255.255.255 broadcast address and directed broadcast address, that is 192.168.1.255 aren't they the same broadcast? Some clarification on directed broadcast and local … Continue reading Local broadcast and directed broadcast.