BGP Origin Attribute

3 possible BGP origin attributes - Incomplete, IGP and EGP. EGP is never used. 

• If redistributed, the origin is Incomplete
• If network command, the origin is IGP

For example:

ip route 88.88.88.0/24 Loopback88 <<< static route

!

interface Loopback88

   ip address 88.88.88.1/32

!

router bgp 4

   redistribute static

   address-family ipv4

      network 88.88.88.1/32

R4#sh ip bgp 88.88.88.0/24

BGP routing table entry for 88.88.88.0/24

 Paths: 1 available

  Local

    - from - (0.0.0.0)

      Origin INCOMPLETE, metric -, localpref -, weight 0, valid, local, best, redistributed (Static)

R4#sh ip bgp 88.88.88.1/32

BGP routing table entry for 88.88.88.1/32

 Paths: 1 available

  Local

    - from - (0.0.0.0)

      Origin IGP, metric -, localpref -, weight 0, valid, local, best