| Title: | Digital Brouters Conference |
| Notice: | New common-code brouter family: RouteAbout, DECswitch 900 |
| Moderator: | MARVIN::HART LL |
| 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 |
I have a customer that has the need for a single Ethernet-to-Ethernet IP router. Their current configuration is an extended LAN using 2 DECswitch 900EFs in two separate DEChub 900. They are joined by a DAS ring using the FDDI ports of the switches. Port 6 of one of the switches needs to be connected to a separately administrated "foreign" IP network, and communicate via TCP/IP with a HOST on one of the ports of the second switch. Can this first switch, after installing DRS V2.0, be configured to route IP traffic between port 6 and port 1 (the FDDI port)? Can LAT, DECnet, NETBUEI, and IP still be bridged on all ports except port 6? If so I would assume that I would need three subnets: the foreign one on port 6, a local one on the FDDI port, and the current subnet? Norm
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 757.1 | EDWIN::TAC | Fri Feb 14 1997 11:45 | 24 | ||
V2 on the DECswitch supports 'Routing over bridge ports'. I think you
can do what you want, thought the answer to your specific question is
no, I'm afraid...
> Can this
>first switch, after installing DRS V2.0, be configured to route IP traffic
>between port 6 and port 1 (the FDDI port)? Can LAT, DECnet, NETBUEI, and IP
>still be bridged on all ports except port 6?
You can't bridge IP on ports 1-5, and have it route between 1 and 6
only. The group of ports 1-5 can be a bridged network, which you can
then treat as a single IP interface for the purposes of routing. So
what you can do is route IP traffic between port 6 and the port 1-5
'VLAN'. LAT, DECnet, NETBUEI, and IP will be bridged between all the
ports in the 1-5 group.
On the other switch, sounds like what you want to do is group all the
ports together with bridging, just like normal. The hosts on port 6
will reach the hosts on the second switch via bridging over the FDDI.
Presumably you wouldn't even need to upgrade this switch to DRS at all.
WGE experts, feel free to jump in and correct me...
Tim
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| 757.2 | Okay, it will work | NQOS01::16.72.128.101::LOVE | Are we having fun yet? | Sun Mar 02 1997 13:11 | 10 |
Okay, it looks like it can be done. Only difference between my configuration and reply 1's is that the IP traffic can go out on the other ports (2,3,4,5). That should be no problem since the only way that the IP traffic would get there is if that IP address is specifically called on. Since the only device that will be addressed is over on the other switch, then other than the broadcast messages, that will be the only traffic. Does this router have the permit and deny functions that the Cisco code has on the brouter 90? Norm | |||||
| 757.3 | MARVIN::CLEVELAND | Mon Mar 03 1997 06:27 | 7 | ||
I'm not sure what the 'permit and deny' stuff does. We do have
filtering at both the bridging and IP layers. Do you want to block IP
traffic on ports 2-5? I believe you can do that with a bridge level
protocol filter (to bridging, the ports in the port group are seperate
and distinct).
Tim
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