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Re: BGP TTL check in 12.3(7)T
On 8-apr-04, at 11:30, Hank Nussbacher wrote:
Not bad - Feb 2003 till April 2004 to code, test and implement a change driven by NANOG :-)Here is the feature guide, for those who can't wait to implement it:
However, this says a TTL of 254 will be accepted. Now the fact that I can talk to boxes running a slightly older IOS with a TTL of 0 without any problems suggests to me that emitting packets with a TTL of 255 on router A and accepting packets with a TTL of 254 on router B allows for the presence of a router C in the middle. That can't be good.
Also, they say enabling this feature won't change behavior for outgoing packets. So do these now have a TTL of 255, regardless?