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Conference irocz::common_brouters

Title:Digital Brouters Conference
Notice:New common-code brouter family: RouteAbout, DECswitch 900
Moderator:MARVIN::HARTLL
Created:Mon Jul 17 1995
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:929
Total number of notes:3736

841.0. "VLAN trunking for VN900EF/EX?" by SNOFS1::63496::CHIUANDREW () Tue Apr 08 1997 04:35

    Hi,
    
    Just want to hear any update in regarding to VLAN trunking support on
    VNswitch900EF/EX?
    
    Will it be implmented in VNswitch V2.x?
    
    Customer would like to build VLAN via VNswitch900EF/Gigaswitches (i.e.
    VN900EF (A) talks to VN900EF (B) via two gigaswitches)?
    
    
    Any idea/comments?
    
    thanks in advance for help!
    Andrew Chiu - NSIS Sydney
T.RTitleUserPersonal
Name		DateLines
841.1IROCZ::GUNNERTue Apr 08 1997 10:5422
In VNswitch V1 and V2, the only VLAN trunking protocol we implement is
that on the VNbus (the 400Mbps Hub900 backplane channel). Using this
you can connect VSDs together which span multiple VNswitches in the hub.
On the EA module there are 16 logical bridge ports associated with the
single ATM plughole. Each of these logical ports can be placed in
a different VSD if you want. This allows you to have multiple VSDs
(up to 16) which span an ATM cloud. Each ATM logical brodge port can
be either an FDDI or Ethernet bridge tunnel or an ATM Emulated LAN (ELAN
- using the ATM Forum's LANE V1 standard). Bridge tunnels can only be
between two systems (EA to EA or EA to Gigaswitch), whereas an ELAN
can have many members.

So, you may be able to use the ATM logical bridge ports to achieve
the configuration you want. You should look at the Digital NPB Web page
where there is a white paper on the VNswitch - this describes these
types of configuration.

We do plan to implement VLAN trunking on our high speed data links
(FDDI, Fast Ethernet, ATM) in the V3 VNswitch software release in which
we also plan to have enhanced VLAN support.

Chris
841.2It is clear, but ..SNOFS1::63496::CHIUANDREWTue Apr 08 1997 20:2919
    re .1,
    
    Thanks for your quick response, at least we can tell customer Digital
    is planning for the VLAN trunking on VN900s modules (V3.0, but any
    schedule), I should ask the products management, but .... 
    
    However, we are in the field facing customers every day and customers
    always compare with other vendors' products, and Digital is leading
    in FDDI and in order to 'keep' these customers happy, we would like to
    'provide' similar services where ATM can offer today. I agree FDDI is
    quite different from ATM, but for those customers who have major
    investments in Gigiaswitch/FDDI, how can they get the VLAN features
    working with VN900 modules is the main concerns.
    
    Should customer 'migrate' to ATM???
    
    
    thanks again for help!
    Andrew Chiu - NSIS Sydney
841.3IROCZ::GUNNERWed Apr 09 1997 09:2611
Yes, as always you should contact our product manager (Bernie Zarin)
before making any statements of plans for future functionality to 
customers. The v3 release is in engineering development but is not 
an external committment at the moment.

One way you can use the Gigaswitch/FDDI port groupings is to have a separate
EF module for each VSD and have the FDDI link from each EF connect to
a different Gigaswitch port group. Obviously, this may work out too expensive
for many configurations.

Chris