OT:Is it true ? Dynamic nature of Internet - (Internet delay in

Hi All,

 I am working in an ISP as a Network Specialist managing routing and
switching. I am facing real time and interesting issue ,which i would like
to share it with you all.

We use Brix tool to maintain Customer SLA's by sending ping and trace route
to the popular sites (ex:www.google.com) from different location inside the
country (Exchanges).

The issue here is , when Brix send trace route to destinations (ex:
www.google.com),it takes most preferred path to reach the destination among
all other peering links (direct TATA/NYK) , with in that particular BGP AS ,
they have multiple IBGP session which connects to different part of US.And
each time when my Brix try to trace route , the Popular sites (ex:
www.google.com) address also changes due to more google servers and get
resolved in the DNS lookup.

What happens, whenever it sends trace route, the delay differs and NOT
meeting the SLA.(above threshold value); even though i have enough bandwidth
on my peering (STM4's and STM1's).

Is there any way to make this right by getting the constant delay (Ex:200ms
- 250ms) ? Or is this the nature of the internet? (Dynamic characteristics
of the internet). (not by hard coding the stuff like having one address for
each site www.google.com); Need a solution , not a work around.

Need proper Technical explanation to debate on this. Or any links to dig
into more. How other ISPs do maintain the SLA;s.

[To be frank , i hate to see the NMS dashboard screen in my NOC .(more red
blinking icons ,due to not meeting SLA) This is where the higher management
people likes to point finger on technical people all the time. :)-]

Regards,

Sakthi

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Received on Fri Feb 12 2010 - 16:14:35 ART