| reply to medbuyer
Re: [Other] Configurable Modems (Cable / DSL) I have two separate networks with two separate WAN IPs. In each network the modem, (DSL or Cable) is used as the csu/dsu giving access to the WAN. Attached to those are Cisco routers. The commercial, consumer grade modem will not communicate with the router allowing access to the WAN because the routing protocols are different. This is what I am talking about. |
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BinkVillains... knock off all that evil
join:2006-05-14
Denver, CO
kudos:4 | Treat the modems as dumb layer two devices and have the Cisco handle the routing. This is fairly common. |
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| said by Bink:Treat the modems as dumb layer two devices and have the Cisco handle the routing. This is fairly common.
+1
simple yet effective and straightforward... |
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| reply to Bink
Thought of that / tried that. Per my ISP the network won't "register," what ever they mean by that. They say that this process is not workable with a residential account. (My guess is that they just want more money.)
In any case I have the problem resolved with a modem that is configurable for what I needed. |
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cramer
join:2007-04-10
Raleigh, NC
kudos:7 | reply to pcolasteve
The commercial, consumer grade modem will not communicate with the router allowing access to the WAN because the routing protocols are different. |
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hardlyPremium
join:2004-02-10
USA | reply to pcolasteve
PM me if a Cisco 678 still in unopened antistatic shrink, trips your trigger. |
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 NormanSPremium,MVM
join:2001-02-14
San Jose, CA
kudos:9
 ·SONIC.NET
·Pacific Bell - SBC
| reply to pcolasteve
said by pcolasteve:I have two separate networks with two separate WAN IPs. In each network the modem, (DSL or Cable) is used as the csu/dsu giving access to the WAN. Attached to those are Cisco routers. The commercial, consumer grade modem will not communicate with the router allowing access to the WAN because the routing protocols are different. This is what I am talking about.
For cable, the signal rides on coax between the CMTS and the modem. Signaling is, I believe, based on DOCSIS standards. The modem bridges the coax (HFC) signaling and the Ethernet link. What is there to configure?
For DSL, the signal rides on a copper pair between the DSLAM and the modem. Signaling is based on ADSL, ADSL2+, VDSL, or VDSL2 standards. Most modems auto-detect the virtual circuit pair, and about the only user configuration deals with authentication; PPPoA, PPPoE, or none (DHCP).
With a pure modem, bridging is possible; but the damned RGs ISPs are issuing these days don't seem to bridge well, if at all. I have a Pace 4111N which fails to connect in bridge mode. The last pure DSL modem I found is no longer in production.
--
Norman
~Oh Lord, why have you come
~To Konnyu, with the Lion and the Drum |
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