Dell S4048T-ON, Configuration Manual

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Figure 22. Multi-Exit Discriminators
NOTE: Configuring the set metric-type internal command in a route-map advertises the IGP cost as MED to outbound
EBGP peers when redistributing routes. The configured
set metric
value overwrites the default IGP cost. If the outbound
route-map uses MED, it overwrites IGP MED.
Origin
The origin indicates the origin of the prefix, or how the prefix came into BGP. There are three origin codes: IGP, EGP, INCOMPLETE.
Origin Type Description
IGP Indicates the prefix originated from information learned through an interior gateway protocol.
EGP Indicates the prefix originated from information learned from an EGP protocol, which NGP replaced.
INCOMPLETE Indicates that the prefix originated from an unknown source.
Generally, an IGP indicator means that the route was derived inside the originating AS. EGP generally means that a route was learned from
an external gateway protocol. An INCOMPLETE origin code generally results from aggregation, redistribution, or other indirect ways of
installing routes into BGP.
In Dell Networking OS, these origin codes appear as shown in the following example. The question mark (?) indicates an origin code of
INCOMPLETE (shown in bold). The lower case letter (i) indicates an origin code of IGP (shown in bold).
Example of Viewing Origin Codes
Dell#show ip bgp
BGP table version is 0, local router ID is 10.101.15.13
Status codes: s suppressed, d damped, h history, * valid, > best
Path source: I - internal, a - aggregate, c - confed-external, r - redistributed, n - network
Origin codes: i - IGP, e - EGP, ? - incomplete
Network Next Hop Metric LocPrf Weight Path
*> 7.0.0.0/29 10.114.8.33 0 0 18508 ?
*> 7.0.0.0/30 10.114.8.33 0 0 18508 ?
*> 9.2.0.0/16 10.114.8.33 10 0 18508 701 i
184 Border Gateway Protocol IPv4 (BGPv4)