lim@slc6.INS.CWRU.Edu (Hock-Koon Lim) (12/29/90)
I have came across some problems running MacTCP v1.1. The Mac is connected
to the campus ethernet with an ethernet Interface. MacTCP is install for
application like Stanford Mac/IP V4.0. The address assignment for the
Mac is provided by a bootp server running CMU`s bootpd. The MacTCP is
configured to get the address from "server". When I start the
Mac/IP, the mac send out the BOOTP Request to the network. It received
a BOOTP Reply from the server. In the reply packet, it get its IP address
and the Gateway address which is set to the Bootp server address(this work
find if the Mac is on the LocalTalk but not on the ethernet). I have to
enter the default gatway address in the MacTCP configuration.
After the Mac get the BOOTP Reply, it will send out an
ICMP C Get address mask packet.
This packet will cause some problem on the network. Now all the IP hosts
on the network will try to reply the Address mask request. If the Mac is
not in the IP hosts ARP table, they will also send an ARP request packet packet
for this mac. Every IP hosts will send the ICMP R Address mask = [255.255.0.0]
to this poor Mac.
So my question is why the Mac has to send out the Get address mask packet?
Is they any MacTCP configuration I did wrong to cause this problem?
The following is the Caputure file from the sniffer which so this problem.
Thanks,
Hock-Koon Lim, Information Network services
Case Western Reserve University; Cleveland, Ohio, USA 44106
(216) 368-2982 lim@ins.cwru.edu
-----------------------------------------------------------------
Sniffer Network Analyzer data from 27-Dec-90 at 10:51:42, file C:\CAPTURE\MACTCP.ENC, Page 1
SUMMARY Delta T Destination Source Summary
42 3.9915 Broadcast Mac-Test BOOTP Request
43 0.0084 Mac-Test U-B 030A36 BOOTP Reply
44 0.0012 Broadcast Mac-Test ICMP C Get address mask
45 0.0004 Mac-Test Sun 09FA67 ICMP R Address mask = [255.255.0.0]
46 0.0004 Mac-Test Sun 02A20E ICMP R Address mask = [255.255.0.0]
47 0.0001 Mac-Test Sun 02AB5C ICMP R Address mask = [255.255.0.0]
48 0.0004 Mac-Test Sun 02A2AF ICMP R Address mask = [255.255.0.0]
49 0.0003 Mac-Test Sun 02A1D9 ICMP R Address mask = [255.255.0.0]
50 0.0004 Mac-Test U-B 03091E ICMP R Address mask = [255.255.0.0]
51 0.0003 Mac-Test U-B 030A2B ICMP R Address mask = [255.255.0.0]
52 0.0005 Mac-Test Sun 0A04F0 ICMP R Address mask = [255.255.0.0]
53 0.0002 Mac-Test Sun 095BBA ICMP R Address mask = [255.255.0.0]
54 0.0005 Mac-Test Sun 095BCD ICMP R Address mask = [255.255.0.0]
55 0.0002 Mac-Test Sun 02974C ICMP R Address mask = [255.255.0.0]
56 0.0005 Mac-Test DEC 1AFD82 ICMP R Address mask = [255.255.0.0]
57 0.0003 Mac-Test U-B 030AB2 ICMP R Address mask = [255.255.0.0]
58 0.0006 Mac-Test U-B 0308D6 ICMP R Address mask = [255.255.0.0]
delete a lot of ICMP reply for Address mask here
189 0.0001 Broadcast DECnet000BA4 ARP C PA=[129.22.8.87] PRO=IP
204 0.0002 Broadcast DECnet000BA4 ARP C PA=[129.22.8.87] PRO=IP
205 0.0001 Broadcast DECnet000BA4 ARP C PA=[129.22.8.87] PRO=IP
206 0.0002 DECnet000BA4 Mac-Test ARP R PA=[129.22.8.87] HA=00001D00DB99 PRO=IP
207 0.0029 Broadcast Mac-Test ARP C PA=[129.22.8.87] PRO=IP
208 0.0004 Mac-Test Sun 02A0C5 ICMP R Address mask = [255.255.0.0]
209 0.0011 Mac-Test DECnet000BA4 ICMP R Address mask = [255.255.0.0]
210 0.0019 Mac-Test DECnet002FA4 ICMP R Address mask = [255.255.0.0]
--
Hock-Koon Lim, Information Network services
Case Western Reserve University; Cleveland, Ohio, USA 44106
(216) 368-2982 lim@ins.cwru.edujim@group1.uucp (Jim Haile) (03/02/91)
We use MacTCP in an application that gets info from our Unix based database onto our Macs. It works great now through Ethernet but we are contemplating adding a 56K line to a remote office and I am concerned about MacTCP. Will it time out at this slower speed? Has anyone tried this? Thanks, Jim -- Jim Haile Group One, Ltd. uunet!group1!jim
kdb@macaw.intercon.com (Kurt Baumann) (03/05/91)
In article <1991Mar01.170733.9543@group1.UUCP>, jim@group1.uucp (Jim Haile) writes: > Path: intercon!uupsi!rpi!zaphod.mps.ohio-state.edu!wuarchive!uunet!group1!jim > From: jim@group1.uucp (Jim Haile) > Newsgroups: comp.protocols.tcp-ip > Subject: MacTCP > Keywords: MacTCP > Message-ID: <1991Mar01.170733.9543@group1.UUCP> > Date: 1 Mar 91 17:07:33 GMT > Sender: jim@group1.UUCP (Jim Haile) > Organization: Group One, Ltd.; San Francisco > Lines: 12 > > We use MacTCP in an application that gets info from our Unix based > database onto our Macs. It works great now through Ethernet but we > are contemplating adding a 56K line to a remote office and I am > concerned about MacTCP. Will it time out at this slower speed? Has > anyone tried this? > Thanks, > Jim > > -- > Jim Haile > Group One, Ltd. > uunet!group1!jim From my understanding you should not have any problems. I know there is a problem at 9600. I do know that Apple is working on that problem, but we use our product out over the net at 56K without any problems. Kurt Baumann InterCon Systems Corporation 703.709.9890 Creators of fine TCP/IP products 703.709.9896 FAX for the Macintosh.