Mailing List os2-wireless_users@2rosenthals.com Archived Message #5814

From:	"Lewis G Rosenthal" <os2-wireless_users@2rosenthals.com>	Full Headers Undecoded message
Sender:	"OS/2 Wireless Users Mailing List" <os2-wireless_users@2rosenthals.com>
Subject:	Re: [OS2Wireless] VPC under eCS on TP
Date:	Sun, 12 Aug 2007 17:10:25 -0400
To:	"OS/2 Wireless Users Mailing List" <os2-wireless_users@2rosenthals.com>

Hi, Hakan. Sorry to be coming so late to the party... I'm in the process of re-installing VPC on my T43 right now (need to reboot), but I wanted to throw a couple things out for general consumption... 1. Under Windows, the command to display your routing table is route print <Enter> 2. To get to your local systems, a default route is not needed (if using Virtual Switch), as you are staying on your local network. 3. Try to ping the IP address of your local machine, as assigned under eCS. This should give us an idea as to whether traffic is moving between the virtual machine and the physical one. 4. It is indeed possible to obtain an IP address form a DHCP request and still not be able to get any traffic to pass. I see this *from time to time* particularly when troubleshooting wireless networks. 5. Can you ping the VPC guest address from the VPC host? 6. I take it that you are attempting to ping addresses and not names. Name resolution is a completely different matter (obviously). 7. Dump your ARP table from the VPC guest to see what you've got: arp -a <Enter> 8. Check the arp tables in your other machines on the network and see if they have entries for your virtual machine listed. Try pinging your virtual machine IP from other machines (assuming a ping from the host is successful) to populate the arp tables on those other machines. 9. I hope you are using Virtual Switch on your wired interface and not on your wireless one, as Virtual Switch *does not work reliably* over 802.11 links. I had some discussion with Achim a few years ago in this regard, but as VPC was (by necessity) discontinued, the issue (an enhancement request, actually, as this was not a bug, but a known condition) was never addressed. 10. Are you certain that you do not have another DHCP server anywhere on your network which could be assigning duplicate addresses (see point 4, above, as this is a common cause). A couple quick links, as I had them handy: http://www.dhcp-handbook.com/dhcp_faq.html http://www.apps.ietf.org/rfc/rfc1531.html The above are related to DHCP specifically, and not to troubleshooting TCP/IP in general. More suggestions later. -- Lewis ------------------------------------------------------------ Lewis G Rosenthal, CNA, CLP, CLE Rosenthal & Rosenthal, LLC Accountants / Network Consultants New York / Northern Virginia www.2rosenthals.com eComStation Consultants www.ecomstation.com Novell Users Int'l www.novell.com/openenterpriseserver Need a managed Wi-Fi hotspot? www.hautspot.com ------------------------------------------------------------ =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-= This message is sent to you because you are subscribed to the mailing list <os2-wireless_users@2rosenthals.com>. To unsubscribe, E-mail to: <os2-wireless_users-off@2rosenthals.com> To switch to the DIGEST mode, E-mail to <os2-wireless_users-digest@2rosenthals.com> To switch to the INDEX mode, E-mail to <os2-wireless_users-index@2rosenthals.com> Send administrative queries to <os2-wireless_users-request@2rosenthals.com> To subscribe (new addresses), E-mail to: <os2-wireless_users-on@2rosenthals.com> and reply to the confirmation email. Web archives are publicly available at: http://lists.2rosenthals.com This list is hosted by Rosenthal & Rosenthal, LLC P.O. Box 281, Deer Park, NY 11729-0281. Non- electronic communications related to content contained in these messages should be directed to the above address. (CAN-SPAM Act of 2003) =-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=

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