From owner-freebsd-isp Tue Jul 13 1:30:40 1999 Delivered-To: freebsd-isp@freebsd.org Received: from studict.student.utwente.nl (studict.student.utwente.nl [130.89.220.2]) by hub.freebsd.org (Postfix) with ESMTP id EA77E152ED for ; Tue, 13 Jul 1999 01:30:30 -0700 (PDT) (envelope-from lva@dds.nl) Received: from ren (ut127003.inbel.utwente.nl [130.89.127.3]) by studict.student.utwente.nl (8.8.6/MQT) with SMTP id KAA16191 for ; Tue, 13 Jul 1999 10:30:17 +0200 (METDST) Reply-To: From: "laurens van alphen (craxx)" To: Subject: ADSL with ISDN backup. What is the best way to go? Date: Tue, 13 Jul 1999 10:30:17 +0200 Message-ID: <000701becd09$efa72160$0a0010ac@craxx.com> MIME-Version: 1.0 Content-Type: text/plain; charset="iso-8859-1" Content-Transfer-Encoding: 7bit X-Priority: 3 (Normal) X-MSMail-Priority: Normal X-Mailer: Microsoft Outlook 8.5, Build 4.71.2173.0 X-MimeOLE: Produced By Microsoft MimeOLE V5.00.2014.211 Importance: Normal Sender: owner-freebsd-isp@FreeBSD.ORG Precedence: bulk X-Loop: FreeBSD.org Hello, We are looking in to using ADSL for our new Internet connection. Although we live in the Netherlands and Telco's are usually somewhat less crappy than the US ones ;P, we still want ISDN backup. The following situation will be installed (i suggest you use a fixed pitch font): (the internet) | (some router) | [ A:upstream cisco 7200 ]---------------+ | | [ B:upstream cisco 6200 ] | | | (adsl) (isdn) | | [ C:cisco 675 asdl (as bridge) ] | | | (ethernet) | | | [ D:freebsd machin w/ 2nic+isdn ta ] | | [ E:freebsd firewall (ipfilter), 3 nics ] | | (ethernet dmz) (other subnets) | | Basically D is our main gateway that will route ip packets through C (adsl bridge at our location) to B (big cisco dsl mama). What we want is our gateway (D) to dial into A (the 7200 at our upstream) when the connection between A en D fails. Several questions: - How should we determine the failure? Some low level protocol, does CBOS (cisco broadband operating system in C) provide anything we can use? Will, for example BSD notice if the ADSL link is down eventhough the bridge (C) is in between (time-out) ? - Can we use static routing w/ a higher metric or are we going RIP, OSPF or BGP4? - Any know issues when using ISDN (sync ppp) between FreeBSD and a Cisco? Thanks, -- laurens van alphen alphen@craxx.nl The box said: 'Requires Windows 98, NT, Linux or better' so I installed FreeBSD. To Unsubscribe: send mail to majordomo@FreeBSD.org with "unsubscribe freebsd-isp" in the body of the message