Received: from oss.sgi.com (localhost [127.0.0.1]) by oss.sgi.com (8.12.3/8.12.3) with ESMTP id g5OBaenC025978 for ; Mon, 24 Jun 2002 04:36:40 -0700 Received: (from majordomo@localhost) by oss.sgi.com (8.12.3/8.12.3/Submit) id g5OBadeK025977 for netdev-outgoing; Mon, 24 Jun 2002 04:36:40 -0700 X-Authentication-Warning: oss.sgi.com: majordomo set sender to owner-netdev@oss.sgi.com using -f Received: from brmx1.fl.icn.siemens.com (brmx1.fl.icn.siemens.com [12.147.96.32]) by oss.sgi.com (8.12.3/8.12.3) with SMTP id g5OBaanC025974 for ; Mon, 24 Jun 2002 04:36:37 -0700 Received: from boca210a.boca.ssc.siemens.com (boca210a.boca.ssc.siemens.com [165.218.12.110]) by brmx1.fl.icn.siemens.com (8.9.3/8.9.3) with ESMTP id HAA03702 for ; Mon, 24 Jun 2002 07:39:55 -0400 (EDT) Received: by boca210a.boca.ssc.siemens.com with Internet Mail Service (5.5.2653.19) id ; Mon, 24 Jun 2002 07:39:55 -0400 Message-ID: <180577A42806D61189D30008C7E632E8793946@boca213a.boca.ssc.siemens.com> From: "Bloch, Jack" To: "'netdev@oss.sgi.com'" Subject: IP stack question Date: Mon, 24 Jun 2002 07:39:55 -0400 MIME-Version: 1.0 X-Mailer: Internet Mail Service (5.5.2653.19) Content-Type: text/plain; charset="iso-8859-1" Sender: owner-netdev@oss.sgi.com Precedence: bulk Content-Length: 733 Lines: 15 I am writing this e-mail at the recommendation of Alan Cox. I have an embedded system running on cPCI HW which has two physical Ethernet connections. This system is connected to an internal network and the IP addresses are not made public. I use the IP addresses 10.1.1.4 and 10.1.1.5 respectively. The two physical ports are connected to two separate LAN switches which are connected by an uplink. I want to periodically test this uplink cable. My plan to do this is to send a simple test message (much like a ping) from 10.1.1.4 to 10.1.1.5, however, the IP stack does not let me do this. Is there any specific reason why not? Jack Bloch Siemens Carrier Networks e-mail : jack.bloch@icn.siemens.com phone : (561) 923-6550