title: Why is EIGRP and RIP uses IP TTL of 2 (CISCO)?
body: <p>through my studies on CCNP ROUTE, while sniffing EIGRP packets, I noticed that packets have IP TTL of 2. I also verified this for RIP. OSPF doesn't have this property since it's link state.</p>
  
  <p>Why does the EIGRP and RIP have IP TTL of 2?</p>
  
  <p>I already asked one CCIE person, but he didn't know.</p>
  
  <p>I came to believe that this may have something to do with frame relay hub&amp;spoke topologies. For example hub routing EIGRP multicasts from one spoke to another (assuming subinterfaces)?</p>
  
  <p>Any advice/idea/explanation would be greatly appreciated.</p>
  
  <p>Thanks.</p>