Differences between version 2 and predecessor to the previous major change of NetworkingNotes.
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| Newer page: | version 2 | Last edited on Tuesday, October 12, 2004 1:12:45 am | by PerryLorier | Revert |
| Older page: | version 1 | Last edited on Tuesday, August 24, 2004 1:13:40 pm | by PerryLorier | Revert |
@@ -1,6 +1,14 @@
This page discusses the difference in tuning networking on various OS's: http://foureleven.org:81/rosetta-stone-performance-tuning.html
See also NetworkingBestPractices
+----
+!!! Use of RFC:1918 addresses for routers
+This has issues such as:
+ [[Host A] <-> [[Router B] <-> [[Router C] <-> [[Router D] <-> [[Router E] <-> [[Host F ]]
+
+Now, Router B has a route to some RFC:1918 space (perhaps Host A is even on RFC:1918 behind [NAT]), Router D is numbered using RFC:1918 space (differently routable than Router B). Now, if the link from Router D and router E has a smaller [MTU] than the rest of the network, and Router B has reverse path filtering on, then A can no longer talk to F. If A traceroutes to F then it misses seeing D as well for the same reason.
+
+RFC:1918 is evil and should be avoided at all costs, if you must use it, use it only on the edges on networks you control.
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CategoryNetworking
