Image Map Image Map
Page 2 of 2 FirstFirst 12
Results 11 to 19 of 19

Thread: PC based network bridge that can do Ethernet to Token Ring

  1. Default

    I worked on UB Network's token ring and ethernet bridging products back in the late 80's/early 90's. What I recall is that compared to most modern networking problems, it's fairly straightforward to bridge between Ethernet and Token Ring. Unfortunately it was so long ago, I can't remember many details.

    regards,
    Mike Willegal

  2. #12

    Default

    I had a quick look at CrossComm, in the hope I could use the software but according to this:
    https://groups.google.com/forum/#!to...ng/bwrsKil3k-0
    They include a proprietary processor. Though the article did give me the term "80386 bridge" to search on.

    This article:
    https://books.google.com/books?id=VB...bridge&f=false (page 49)

    Mentions the CrossComm ILAN-H (image on p55) and a Novell external bridge.

    "The Novell bridge is a software program run on a workstation with two adapter cards, one connected to each of the networks. Creation of a Novell external bridge requires setting up a workstation adapter and IBM 4M/16M token-ring adapter running at 4MHz. The Novell bridges have a packet size limit of 512 bytes."

    I'm not familiar with Netware. A search for "novell bridge program" turned up two programs called BRGEN and ROUTEGEN. So it would indicate that BRGEN does do bridging. However I'm not entirely sure if this is specific to IPX stuff. As I understand it you have to install Netware on a system, then you run the program that creates the software to run on a spare PC. Before I go down this path, does anyone have any experience with this software?

    --
    luckybob, It ran on a pentium 133. It was an IBM PC330 with a 430FX chipset and a PCI bus. I tried linux (slackware) on a PS/2 and got nowhere fast. It can be done, but I gave up at the first hurdle when the boot disk hung. One thing I couldn't get working was routing from two 255.255.255.0 subnets. I ended up using 255.255.255.192 subnets. I will dig it out, and see if it
    still boots.

    mwillegal, that article mentions a UB bridge, that "Only Novel and CrossComm offer bridging solutions that support a variety of token-ring cards. For users willing to work exclusively with Ungermann-Bass token-rihg network interface cards, the list of manufactures expands to include Ungermann-Bass." So this would indicate that the bridge, is a PC with software and two UB cards. Does this ring a bell, the article just calls it a "Ungermann-Bass bridge".

    I've looked at CISCO stuff again. There are lots of 3600 Series routers on ebay at the moment, but every time you find one cheap, it has no cards! I don't know how new these are, but it seems if its got just a token-ring+ethernet card rendering it obsolete, the price is 60. I don't understand why old Cisco stuff costs so much.
    Looking for: OMTI SMS Scientific Micro Systems 8610 or 8627 ESDI ISA drive controller, May also be branded Core HC, Please PM me if you want to part with one.

  3. #13
    Join Date
    Sep 2006
    Location
    Silicon Valley
    Posts
    1,397

    Default

    Quote Originally Posted by mR_Slug View Post
    I've looked at CISCO stuff again.
    Cisco 2513 ?

  4. #14
    Join Date
    Feb 2012
    Location
    Northern Nevada
    Posts
    646

    Default

    Get a Cisco 2800 series router and an NM-1FE1R2W module, that will give you an additional fast ethernet and 1 token ring port. The module runs about $10 to 20.

    A 2811 or 2821 router will only cost you $50 or so.

  5. #15

    Default

    Not that exact model, no. I did look as some others in the 2500 range, but this post:
    https://supportforums.cisco.com/t5/o...er/td-p/287480

    Gave indication that you need two of them connected via their serial interfaces. I'll have to check this one out a bit more closely. Thanks.

    I do like the idea of PC based stuff though, It only takes up the space of a couple of NICs and a disk image.
    Looking for: OMTI SMS Scientific Micro Systems 8610 or 8627 ESDI ISA drive controller, May also be branded Core HC, Please PM me if you want to part with one.

  6. #16
    Join Date
    Sep 2006
    Location
    Silicon Valley
    Posts
    1,397

    Default

    Quote Originally Posted by mR_Slug View Post
    Not that exact model, no. I did look as some others in the 2500 range, but this post:
    https://supportforums.cisco.com/t5/o...er/td-p/287480

    Gave indication that you need two of them connected via their serial interfaces. I'll have to check this one out a bit more closely. Thanks.
    That message was using two router boxes, one with token-ring and one with ethernet
    The 2513 has TR and Ethernet in the same box.

    The other question is if you're only routing IP packets, or something else like from something in the non-IP IBM world.

  7. #17
    Join Date
    Feb 2011
    Location
    NorthWest England (East Pondia)
    Posts
    1,825
    Blog Entries
    10

    Default

    I have one of those boxes with multiple interfaces which I used to connect my 3174 (Token Ring) to Hercules (Ethernet) but I just used a NATed routing connection as I only connect TN3270 from the 3174 box to elsewhere.
    Dave
    G4UGM

    Looking for Analog Computers, Drum Plotters, and Graphics Terminals

  8. #18

    Default

    Sorry I think i may have confused everyone with the line "3600 Series routers on ebay at the moment". Perhaps I should have said routers that can be configured as a bridge for non-IP traffic.

    I looked at the 2513 manual and could not find the term "bridge" anywhere. Although I may have missed something. Still looks like a nice piece of kit though. I haven't looked at the C2612 or the 2800 series yet.

    @g4ugm - Which one do you mean, the C2612 you linked to in the second post?

    What I want to do is "bridge" Ethernet and token ring. For non routable protocols like netBIOS/netBEUI. I think someone mentioned Source-Route Bridging. I think what i need is Source-Route Translational Bridging (SR/TLB):

    http://www.rhyshaden.com/tokenr.htm (section 12).

    I already have a Linux based IP router.

    @luckybob
    I plugged the router in today, everything came up and worked a treat. I'll try and make a disk image of it tomorrow. the two PCI NIC's I used (as reported by linux) were:
    3Com Corporation 3c905B 100BaseTX
    IBM 16/4 Token ring UTP/STP controller
    Looking for: OMTI SMS Scientific Micro Systems 8610 or 8627 ESDI ISA drive controller, May also be branded Core HC, Please PM me if you want to part with one.

  9. #19

    Default

    Ok had a further look as the 2513 router and according to this it can do bridging. I did a word search on the manual for "bridging" and only 2 results came up, perhaps it's in another PDF. So this looks like it fits the ticket.

    I may go for the 2800 series though as that can do fast Ethernet, which is preferred.

    Does no one remember the Netware BRGEN and ROUTEGEN programs?

    luckybob, I've put an image of the Linux based TR-to-Eth bridge here:
    http://108.59.254.117/~mR_Slug/projects/eth-tr-router/

    It's a bit rough and ready but it does work in its present state. The image is 300MB when uncompressed. I have it running on Pentium 133 w/ 16MB RAM. It may work on an SD card, but DSL has quite a bit of HDD activity building the filesystem on boot.
    Looking for: OMTI SMS Scientific Micro Systems 8610 or 8627 ESDI ISA drive controller, May also be branded Core HC, Please PM me if you want to part with one.

Bookmarks

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •