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- Newsgroups: vmsnet.networks.tcp-ip.ucx
- Path: sparky!uunet!news.univie.ac.at!chx400!alcatel.ch!news
- From: ERNST@srzun99 (P.Ernst (SYSmanager))
- Subject: how UCX2.0 C-mask nodes treat B-mask broadcasts
- Message-ID: <1992Nov21.114612.13014@alcatel.ch>
- Sender: news@alcatel.ch (USENET News System)
- Reply-To: peter.ernst@alcatel.ch
- Organization: Alcatel STR AG, Switzerland
- Date: Sat, 21 Nov 1992 11:46:12 GMT
- X-News-Reader: VMS NEWS 1.24
- Lines: 33
-
- -
-
- We are using UCX 2.0 (with SMTP ECO1 and FTP ECO1) on VMS 5.5-1. For
- several reasons (whitch I would not discuss here...) the stations
- in our department are configured to be NON DYNAMIC ROUTING in a
- C-Mask Subnet, static default routing to a specific GATEWAY.
- Everything seems to work fine (now).
-
- However we live in a B-NET with several hundreds of nodes. Some of
- them using B-Mask broadcasts. (espcially the backbone routers...)
-
- Now we have seen that EVERY UCX 2.0 node with a C-Mask, receiving a
- B-Mask broadcast will complain with...
-
- 70(Bytes) ICMP from node-c to b-broadcaster dst (port) unreachable
-
- (this is true for applications using privat ports not supported on our
- UCX2.0 nodes and also for routing-messages on NON DYNAMIC Routing nodes)
-
- It seems that a C-Mask UCX2.0 node treats a B-Mask Broadcast as a
- NODE to NODE message. :-( !!!!!!!!!!!!!!!!
-
- Has anybody an idea how to avoid this...or shall i wait until
- there's a PATCH (gone through an exhaustiv field test...when? ) ?
-
- I'am afraid that our networkmanger will not allow us to use UCX2.0
- under this circumstances.
- Thanks
- Peter Ernst | Phone : +41 -1- 465 2557
- +----------V----------+ 4.911 | X.400: c=CH a=arCom p=Alcatel
- | A L C A T E L | Alcatel STR | s=Ernst g=Peter
- +---------------------+ Friesenbergstr. 75 | RFC822: peter.ernst@alcatel.ch
- S T R CH-8055 Zuerich | VMS-m : PSI%4795123920::ERNST
-