Cisco Systems Re: IS PROTOCOL IS-IS REALY USED IN REAL WORLD?
Bookmark this page:  YahooMyWeb Yahoo!  Google Google  Windows Live Favorites Windows Live  del.icio.us del.icio.us  digg digg  Add to Netscape Netscape
Subject Author Date
Re: IS PROTOCOL IS-IS REALY USED IN REAL WORLD? Stephen 07-01-09
Posted by Stephen on July 1, 2009, 6:32 pm
Please log in for more thread options
On Mon, 29 Jun 2009 05:05:57 -0700 (PDT), cisco_crazy

>hi all,
>has any body met protocol IS-IS functioning in real world? and how was
>its performance? is it realy faster than OSPF?

performance is fine (although that depends on scale, boxes used,
manufacturer, tuning etc).

traditionally it was used most at ISPs and was always regarded as more
scaleable, and since it doesnt use IP to carry its packets it is often
regarded as a bit more secure - carriers are / were the main users.

You also find it in other kinds of network - a lot of SDH networks use
IS-IS to route their control networks (since a lot of muxes operate on
OSI CLNS).

it has different scaling properties to OSPF - you can get "bigger
areas" in OSPF terms, and the hierarchy is slightly different in that
any 1 router is in 1 area - no real concept of an ABR.

As with most routing protocols IS-IS has been improved over the years
- "wide" interface costs for example were retrofitted after
comparisons with OSPF.
--
Regards

stephen_hope@xyzworld.com - replace xyz with ntl

Similar ThreadsPosted
Re: IS PROTOCOL IS-IS REALY USED IN REAL WORLD? July 1, 2009, 6:32 pm
Is routersim good for testing router config in the real world? March 18, 2006, 11:22 am
Re: 2057 - The World May 10, 2008, 3:13 pm
Frame Realy Lab problems April 7, 2006, 3:22 pm
ISIS Adjacency Problem June 8, 2007, 12:56 am
Csico 3640 => MTU/ISIS/MPLS February 8, 2009, 9:05 am
Have your Cisco story published on the Network World website July 31, 2007, 8:58 pm
ISIS multicast addr on broadcast nets? February 15, 2005, 8:23 pm
From Network World: Two Cisco router security, IP networking experts ready for your questions January 25, 2008, 1:58 pm
Did comp.dcom.sys.cisco Thread Create Network World Major News Article? October 30, 2006, 5:39 am
efficient use of real ips February 2, 2006, 8:48 am
using translate as a REAL end-to-end x25 to tcp gateway? February 1, 2006, 9:04 am
Cisco PIX 515: Map virtual ip to real one September 1, 2006, 4:31 pm
Show real ip in ASA5520 log November 26, 2008, 7:45 am
2 PIX Same COnfig, though 1 not connected to 'real' outside? Does not work? March 23, 2006, 10:27 am
Residential Cabling Guide

Home Cabling Guide

Finally, an instantly downloadable book that saves you thousands in home improvement dollars! Enjoy living in 21st century technology-advanced home while increasing its selling value and competitive advantage on the real estate market. Whether your cabling is for home office or high-tech leisure, you can wire your home yourself or learn "wirish" to speak with your cabling contractors in their language!

Learn More