IP SLA shadow routers deploiment

Question

hello,

i have a training for 3 months with a SP, and i have to find a solution for perfermance mesurmenent (delay, jitter, latency..) and i think that an IP SLA-based solution will be appropiate, specially with Orion IP SLA MAnager, but i still dont know too mutch about the deploiment of shadow routers in a real environment, i mean with existing SP's routers, shoud we shtdown this routers and replace them with ths shadow routers to make the differenrent messurements??!! ( it sounds illogical and innapropriate),  and does the IP SLA realy geretare the traffic.?? ( Like FTP, HTTP, VoIP....) or i can just mesure the existing traffic performance ( il will be realy awesome if i dont need a web server for web performance mesurement for example)...thx

macnugetz · Answer

hassane777,

Orion IP SLA Manager will generate a synthetic DNS request from a source device to a DNS server.  The purpose of this operation is to measure round trip time for a DNS request to your DNS server.  In other words, you would use this operation to ensure your DNS server is operational and performing as expected.

HTH,

Craig

MarieB · Answer

Hi All--

I've marked this for the PM to review.

M

hassane777 · Answer

hi,

thx dude, and i have anothor question,  this one is about traffic generating, i wanna know how can i genarate DNS requests without having a real DNS server, i thought it was possible coz i'v read this in the administrator guide : "IP SLA Manager deploys Cisco IP SLA operations to generate various types of network traffic such as DNS requests, DHCP IP allocation, FTP and HTTP requests......" but it looks like i need to type the IP adress of a existing DNS server.... it dosn't make sens!!! why would i use  a real DNS server if i can just simulate various type of network traffic!!???...