by default the router is not a bridge. so yes, bridging must be enabled. look, my DSL provider put a bridge in my house. I plug the ethernet side into a hub, and anything I plug into that hub has my public IP numbers. same as your old configuration.
If your ISP is bridging to you then so far as I know, based on how I have configured things that plug into Pacific Bell Internet's bridged connections, bridging must be enabled and on the DSL side of things there needs be a bridging configuration. I use IRB and the BVI, because my customers tend to have private IP's on the inside, and we are doing some form of VPN tunnels. Other ISP's may do things differently. I can only relate my own limited experience here. Chuck -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED]]On Behalf Of Ben Hockenhull Sent: Thursday, October 18, 2001 7:40 PM To: [EMAIL PROTECTED] Subject: RE: ADSL config [7:23456] >the carrier DSL bridge? You would plug the Ethernet output into a hub or >switch, plug your other end stations into that hub or switch, and number >everything according to the IP scheme your carrier provides. You should be >doing the same on your Cisco box. I can only speak to what I have done >personally, but my understanding is that you would bridge on the DSL link, >and the public IP address would either go on the ethernet link or the BVI. Well, the way it was set up, the provided DSL bridge plugs into an ethernet interface designated as external, the internal network was on another ethernet interface, I set the public IP on the public ethernet interface, enable NAT, and things Just Work. I'm trying to get rid of the bridge for a variety of reasons, including the fact that the bridge doesn't drop line protocol on the ethernet port when the DSL link goes down, so my dial-backup never triggers. I'm still unclear on why I need to set up bridging, unless I need to be sending BPDUs to the DSLAM or something. If the ADSL interface is configured with the PVC information and has an IP, why can't it just encapsulate the frames and send them down the wire without the benefit of an explicit bridge-group? The DSL bridge that was in place simply performed media conversion in the first place. What am I missing? Thanks Ben Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=23486&t=23456 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
