Solved

routing topology to ISP

Posted on 2010-08-31
2
765 Views
Last Modified: 2012-05-10
I am just curious what the typical topology of routing out to the ISP is and an example of the equipment used.   See the following diagram:

http://ptgmedia.pearsoncmg.com/images/chap01_158705146x/elementLinks/fig16.jpg

It shows multiple routes summarized to the E router.  So let's say I have Comcast.  They provide me a modem/router.  What equipment might this connect to?  Multiple routers with 100's of Comcast customers in the area?  If so, do they make Cisco routers that provide dozens of interfaces just for this application (ISP's)?  

So to summarize, I basically want to find out how 100's of customers are consolidated into the ISP and the equipment used.
0
Comment
Question by:B1izzard
2 Comments
 
LVL 24

Accepted Solution

by:
rfc1180 earned 500 total points
ID: 33570744
>It shows multiple routes summarized to the E router.  So let's say I have Comcast.  
They provide me a modem/router.  What equipment might this connect to?

Typically they will give you a bridge with a built in firewall; the bridge converts the Ethernet technology to a coax network. Typically the network would extend to a cable modem termination system and then from their to a core network. A typical CMTS device would be a uBR7200VXR Platform; possible configurations would be the use of 802.1Q Transparent LAN Service (TLS) feature and  DOCSIS deployments to provide L2VPN services. There are many types of topologies that can be used:

http://en.wikipedia.org/wiki/Cable_modem_termination_system
http://www.ciscosystems.com.pe/en/US/tech/tk86/tk804/technologies_tech_note09186a0080204a1a.shtml
http://www.ciscosystems.com.pe/en/US/tech/tk86/tk804
/technologies_tech_note09186a00800a9702.shtml
http://cablelabs.net/specifications/SP_CMTS_NSII01-960702.pdf

Billy
0
 

Author Comment

by:B1izzard
ID: 33607379
Great info.  Thanks!
0

Featured Post

Save the day with this special offer from ATEN!

Save 30% on the CV211 using promo code EXPERTS30 now through April 30th. The ATEN CV211 connects a laptop directly to any server allowing you instant access to perform data maintenance and local operations, for quick troubleshooting, updating, service and repair.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
Getting locked out and can't access Cisco via the web 18 88
VPN Server config in Modem 5 68
Advice on router and switch 25 44
IP Jumping 6 21
I have seen some questions on problems with SSH/telnet access to Cisco routers that may occur despite the fact that from a PC connected to your LAN, Internet connectivity is in place and users can access Internet sites without any issues.  There are…
I recently attended Cisco Live! in Las Vegas, a conference that boasted over 28,000 techies in attendance, and a week of hands-on learning hosted by a solid partner with which Concerto goes to market.  Every year, Cisco displays cutting-edge technol…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…

733 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question