Timeline for How would a router with /32 WAN subnet mask communicate with the rest of the Internet?
Current License: CC BY-SA 3.0
6 events
| when toggle format | what | by | license | comment | |
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| Jul 3, 2014 at 3:51 | comment | added | cpt_fink | Just going to add that proxy-arp should be disabled everywhere, causing the ethernet (non p2p) configuration to fail and get fixed by the end-user. Unfortunately some OS's do not disable proxy-arp by default. Also you can use the interface argument in a route ip route 1.1.1.1 255.255.255.255 fa0/1 2.2.2.2 to ensure the static route is only active when that interface is up. | |
| May 4, 2014 at 11:43 | comment | added | Ricky | PS: you can ask and answer your own question to expound on this subject. | |
| May 4, 2014 at 11:42 | comment | added | Ricky | Even with a /31, it's still ethernet, and thus, proxy-arp. (Unless the hardware has specific p-t-p ethernet capabilities, which most don't.) I've seen too many people do as you suggest with zero clue; and it makes a g.. d... mess they cannot figure out. If you know how to do it without creating a 47k entry arp cache, good for you; the people who come here for answers very likely don't. | |
| May 3, 2014 at 12:50 | comment | added | Baldrick | If Fa0/1 is configured with a /31 its a perfectly valid config. Please don't tell me not to do something when my answer wasn't specific enough to warrant you un-requested concern. Good day to you. | |
| May 1, 2014 at 4:30 | comment | added | Ricky | Please do not tell people they can route to a broadcast-multiaccess interface (read: ETHERNET -- Fa0/1 is ethernet; ethernet is not p-t-p) That's proxy-arp; and there is never a good reason to do that. In fact, it just makes a mess that people who don't know any better will never understand. (eg, their router/switch running out of memory causing various important process to fail.) | |
| May 19, 2013 at 20:41 | history | answered | Baldrick | CC BY-SA 3.0 |