OS10 Enterprise Edition User Guide Release 10.4.0E(R3)

PDF

Origin

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 interior gateway protocol.
EGP
Prefix originated from information learned from an EGP protocol, 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                                 BGP local RIB : Routes to be Added , Replaced , Withdrawn 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
                              

Rate this content

Accurate
Useful
Easy to understand
Was this article helpful?
0/3000 characters
  Please provide ratings (1-5 stars).
  Please provide ratings (1-5 stars).
  Please provide ratings (1-5 stars).
  Please select whether the article was helpful or not.
  Comments cannot contain these special characters: <>()\