Thursday, September 11, 2014

BGP - Troubleshooting Lab 3

  • Establish iBGP between R1 and R2. 
  • Cannot change AS numbers on any of the routers.
  • No other static routes can be added 
  • No interface changes
  • No tunnels
Topology below:
I came across this issue the other day and it took me a few minutes to figure it out. So let's see how y'all do. 

Post your comments below on how you would solve this issue. 

Tuesday, September 9, 2014

Linux RP_Filter RPF_Check

"Network Engineer T-Shirt ... Fixing your network one misconfigured server at a time" -- I saw that shirt today online and I should have purchased it :). I came across an issue today where multicast was being received on the Server on eth1 (confirmed by tcpdump) but it was not showing up in the application. After checking out PIM/IGMP/Mroutes/Routers/Switches I started checking out the Server because the network looked like it was configured correctly.