| Title: | DEChub/HUBwatch/PROBEwatch CONFERENCE |
| Notice: | Firmware -2, Doc -3, Power -4, HW kits -5, firm load -6&7 |
| Moderator: | NETCAD::COLELLA DT |
| Created: | Wed Nov 13 1991 |
| Last Modified: | Fri Jun 06 1997 |
| Last Successful Update: | Fri Jun 06 1997 |
| Number of topics: | 4455 |
| Total number of notes: | 16761 |
I Have a DECswitch 900EF vs 1.6.1 that I want to configure with IP address filters. When I get the the "Address Filters" window and press the "+" button, I get to the "Add filter Entry" window. The help file for this window says I can select DECnet, IP, or MAC address filtering but the IP button on the screen is grayed out. I get the impression that I should be able to add an IP address filter. Is this supported? What do I have to do to filter IP address? Specifically, my customer would like to filter out an IP broadcast address like 198.146.210.255 that has a mask of 255.255.255.0 thanks in advance
| T.R | Title | User | Personal Name | Date | Lines |
|---|---|---|---|---|---|
| 3850.1 | You cannot filter IP with a switch | SLINK::HOOD | Your bad news bear | Mon Sep 09 1996 17:58 | 17 |
>I get the impression that I should be able to add an IP address >filter. Is this supported? The short answer: No. On some platforms, MCM / HUBwatch allows the user to enter IP addresses. But, all that happens in the background is a simple-minded ARP cache lookup to convert from IP to MAC, and then the switch is loaded with the MAC address. Remember that switches work only on layer 2 (MAC layer). They do not read nor do they care about IP (layer 3) addresses. To do the kind of mask-based IP Filtering your customer wants, you need to be using a device that analyzes layer 3 addresses: a router. Tom Hood clearVISN eng | |||||
| 3850.2 | Thanks! | BSS::DUNHAM | Tue Sep 10 1996 13:11 | 2 | |
Thanks much. This makes perfect sence, I was just confused with the Ip
button.
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