Dell EMC SmartFabric OS10 User Guide Release 10.5.0

The origin indicates how the prefix came into BGP. There are three origin codes—IGP, EGP, and INCOMPLETE.

IGP

Prefix originated from information learned through an IGP.

EGP

Prefix originated from information learned from an EGP, which Next Generation Protocol (NGP) replaced.

INCOMPLETE

Prefix originated from an unknown source.

An IGP indicator means that the route was derived inside the originating AS. EGP means that a route was learned from an external gateway protocol. An INCOMPLETE origin code results from aggregation, redistribution, or other indirect ways of installing routes into BGP.

The question mark (?) indicates an origin code of INCOMPLETE, and the lower case letter (i) indicates an origin code of IGP.

Origin configuration

OS10# show ip bgp 
BGP local RIB : Routes to be Added , Replaced , Withdrawn 
BGP local router ID is 30.1.1.1
Status codes: s suppressed, S stale, d dampened, h history, * valid, > best
Path source: I - internal, a - aggregate, c - confed-external, r - redistributed
n - network S - stale
Origin codes: i - IGP, e - EGP, ? - incomplete
         Network       Next Hop  Metric LocPrf Weight Path           
*>I      1.1.1.0/24    17.1.1.2  0      0      0      i
*>I      2.2.2.0/24    17.1.1.2  0      0      0      ?
*>I      3.3.3.0/24    17.1.1.2  0      0      0      e