nanog mailing list archives
Re: netscan.org update
From: Bradley Dunn <bradley () dunn org>
Date: Mon, 25 Sep 2000 03:26:40 -0700
On Mon, Sep 25, 2000 at 03:31:53AM -0400, John Fraizer wrote:
In a BB situation and in some simple multihomed situations, it is possible for someone to have a route into your network via an interface that for administrative/technical reasons, you're not accepting routes to them via. In such instances, CEF will break an otherwise valid, though be it asymetric stream.
You are confusing CEF, a switching path, with 'ip verify unicast reverse-path', an interface configuration command which requires CEF. In any case, recent flavours of IOS support using an ACL to specify exceptions to the reverse-path check. Bradley
Current thread:
- Re: netscan.org update, (continued)
- Re: netscan.org update Bill Fumerola (Sep 26)
- Re: netscan.org update John Fraizer (Sep 26)
- Re: netscan.org update Simon Lyall (Sep 26)
- Re: netscan.org update Leo Bicknell (Sep 24)
- Re: netscan.org update Michael Shields (Sep 25)
- Re: netscan.org update Bennett Todd (Sep 24)
- Re: netscan.org update Greg A. Woods (Sep 25)
- Re: netscan.org update John Fraizer (Sep 25)
- RE: netscan.org update rdobbins (Sep 25)
- RE: netscan.org update John Fraizer (Sep 25)
- Re: netscan.org update Bradley Dunn (Sep 25)
- Re: netscan.org update Charles Sprickman (Sep 25)
- Re: netscan.org update Roland Dobbins (Sep 25)
- CEF RPF check w/ACLs (was: Re: netscan.org update) Tony Tauber (Sep 25)
- Re: CEF RPF check w/ACLs (was: Re: netscan.org update) James A. T. Rice (Sep 28)
- Message not available
- Re: CEF RPF check w/ACLs (was: Re: netscan.org update) Patrick W. Gilmore (Sep 28)
- Re: CEF RPF check w/ACLs (was: Re: netscan.org update) James A. T. Rice (Sep 28)
- RE: netscan.org update John Fraizer (Sep 25)
- Re: netscan.org update Roland Dobbins (Sep 25)
- RE: netscan.org update John Fraizer (Sep 26)