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38 messages in net.nether.puck.cisco-nsp[c-nsp] VLSM| From | Sent On | Attachments |
|---|---|---|
| Shaun | Jan 10, 2005 4:53 pm | |
| Gert Doering | Jan 10, 2005 5:26 pm | |
| Stephen J. Wilcox | Jan 10, 2005 5:27 pm | |
| matthew zeier | Jan 10, 2005 5:46 pm | |
| Shaun | Jan 10, 2005 6:19 pm | |
| Michael Smith | Jan 10, 2005 6:26 pm | |
| Stephen J. Wilcox | Jan 10, 2005 6:28 pm | |
| lis...@hojmark.org | Jan 10, 2005 6:55 pm | |
| Brant I. Stevens | Jan 10, 2005 11:25 pm | |
| Gert Doering | Jan 11, 2005 2:33 am | |
| Stephen J. Wilcox | Jan 11, 2005 6:11 am | |
| Mark Persiko | Jan 11, 2005 10:49 am | |
| Gert Doering | Jan 11, 2005 11:22 am | |
| Hudson Delbert J Contr 61 CS/SCBN | Jan 11, 2005 12:11 pm | |
| Brant I. Stevens | Jan 11, 2005 12:45 pm | |
| Pete Templin | Jan 11, 2005 12:52 pm | |
| Stephen J. Wilcox | Jan 11, 2005 1:30 pm | |
| Stephen J. Wilcox | Jan 11, 2005 1:39 pm | |
| Pete Templin | Jan 11, 2005 2:09 pm | |
| Gert Doering | Jan 11, 2005 2:47 pm | |
| Gert Doering | Jan 11, 2005 2:48 pm | |
| matthew zeier | Jan 11, 2005 3:09 pm | |
| lis...@hojmark.org | Jan 11, 2005 5:22 pm | |
| Anson Rinesmith | Jan 11, 2005 5:47 pm | |
| Michael Loftis | Jan 11, 2005 5:57 pm | |
| Stephen J. Wilcox | Jan 11, 2005 7:23 pm | |
| Stephen J. Wilcox | Jan 11, 2005 7:37 pm | |
| Shaun | Jan 11, 2005 8:31 pm | |
| Jon Lewis | Jan 11, 2005 9:48 pm | |
| Majid Farid | Jan 12, 2005 12:24 am | |
| matthew zeier | Jan 12, 2005 1:23 am | |
| Ted Mittelstaedt | Jan 12, 2005 1:41 am | |
| Ted Mittelstaedt | Jan 12, 2005 1:44 am | |
| Ted Mittelstaedt | Jan 12, 2005 1:51 am | |
| lis...@hojmark.org | Jan 12, 2005 1:18 pm | |
| lis...@hojmark.org | Jan 12, 2005 1:30 pm | |
| Shaun | Jan 13, 2005 4:05 am | |
| Ted Mittelstaedt | Jan 14, 2005 12:29 am |
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| Subject: | [c-nsp] VLSM | Actions... |
|---|---|---|
| From: | Ted Mittelstaedt (te...@toybox.placo.com) | |
| Date: | Jan 12, 2005 1:51:07 am | |
| List: | net.nether.puck.cisco-nsp | |
-----Original Message----- From: cisc...@puck.nether.net [mailto:cisc...@puck.nether.net]On Behalf Of Mark Persiko Sent: Tuesday, January 11, 2005 7:50 AM To: cisc...@puck.nether.net; Brant I. Stevens; lis...@hojmark.org; matthew zeier; Gert Doering; Shaun Subject: RE: [c-nsp] VLSM
If you have a hierarchical network topology with the gateway of last resort facing one egress point at the core, then I've noticed that "ip classless" has the unfortunate side effect of sending all traffic out that egress pipe, whose destination is for subnets that aren't used within the network.
I would be more interested in finding out where such traffic is originating from. That egress point should have a firewall on it that should have sufficient CPU power to run a set of big access lists. We use a 2 Ghz PC running UNIX that is setup as an ethernet to ethernet router in between the actual egress router and our switches, that does nothing other than screen traffic. I daresay I could probably list every single host IP on our network without introducing significant latency.
You will probably find the bulk of the traffic originating from a handful of misconfigured hosts.
Ted