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Hi All, I have a doubt regarding the BGP TTL security feature. Cisco docs state that enabling ttl security for eBGP sessions has no effect on the outgoing IP packets but at the same time they also mention that the feature needs to be enabled on both ...
This document explains how traceroute works differently in an MPLS Core compared to normal IP-based routing. First, a quick recap on how a UDP traceroute is performed in an IP network.
The source sends the first UDP probe to the destination with a TT...
Hi,I have read from several sources ranging from blog posts to the foundation learning guide for CCDP that when using Phase 1 DMVPN with eBGP it is required to set the next-hop-self argument on the eBGP neighbors.
The supposed reason is that because ...
Most sources mention that the locally generated traffic cannot be filtered by access-lists. However, these sources just stop there. They never mention the "Why".
Does the fact that in multilayer switches, ACLs are placed into TCAM and filtered/forwar...
Hi Sam,Regarding this:But why was the (*,G) entry created?I’m quoting the below from the Developing IP Multicast book (Pg 242):General Rule 1 : Whenever it is necessary to create an (S,G) entry and a corresponding parent (*,G) entry does not exist, a...
Thanks Peter. It's nice to know my initial conclusion was correct. Also, your examples with the IP unnumbered and the multipoint tunnel makes total sense.
