Heads Up :
The post you are writing will appear in a public forum. Please ensure all content is appropriate for public consumption. Review the employee guidelines for the community here.
Hello,I am a little bit confused regarding when BGP peers send a routing update back to the originator. I tried different scenarios and noticed that in some of them the eBGP neighbor sends back a routing update back to the local router and in some ca...
Hello,I am trying to understand a concept regarding RPF checks. According to http://cisco.com/en/US/tech/tk828/technologies_tech_note09186a0080094b55.shtml--------Cisco IOS? calculates the RPF interface in this way. Possible sources of RPF informatio...
Hello,I have a problem for which I can't give any explanation to myself. Here's what I have:10.0.0.0 || CE_WEST -- PE_WEST -- P-SP -- PE_EAST -- CE_EAST || 20.0.0.0I deployed an MPLS VPN between the two sites.I read in the MPLS and VPN Architectures ...
Hello,My question is kind of silly but I feel lost. I am reading the BCMSN self-study book and right now I am at the special-case 802.1Q trunk used between Cisco IP phones and catalysts. There's a statement "if you use the command switchport voice vl...
Hello,I was reading RFC 3101 about nssa traslator election and there was a lot of interesting stuff about it. I would just like to know if Cisco routers can manipute the Nt bit and change their nssa traslator role by configuring them as either always...
What the authors mean by that is that if there are, for example, two routes for the source in different tables (Static Mroute, DVMRP, MBGP or Unicast routing table), then first their administrative distance is compared. Within the same table (for ins...
Thank you very much Harold! I thought about it for a little while and I think I finally managed to understand what the authors of the document and the book meant when they mentioned the administrative distance. The keyword in "Doing distance-preferre...
Hi Nambi,This is most probably why this happens but I still don't get it. Isn't the administrative distance looked up first? Or is the administrative distance of routes compared only when I have routes with the same mask length in different tables (e...
Hi Harold,Thank you for clearing this up! However, I still have a couple of questions for this case? Is the passage that I posted in my first post outdated? Is this something that has changed over time in newer IOS releases? Is the IP TTL field the o...
