metric-outSyntax metric-out (metric | minimum-igp offset | igp (delay-med-update | offset);Hierarchy Level [edit logical-systems logical-system-name protocols bgp],[edit logical-systems logical-system-name protocols bgp group group-name],[edit logical-systems logical-system-name protocols bgp group group-nameneighbor address],[edit logical-systems logical-system-name routing-instances routing-instance-name protocolsbgp],[edit logical-systems logical-system-name routing-instances routing-instance-name protocolsbgp group group-name],[edit logical-systems logical-system-name routing-instances routing-instance-name protocolsbgp group group-name neighbor address],[edit protocols bgp],[edit protocols bgp group group-name],[edit protocols bgp group group-name neighbor address],[edit routing-instances routing-instance-name protocols bgp],[edit routing-instances routing-instance-name protocols bgp group group-name],[edit routing-instances routing-instance-name protocols bgp group group-nameneighbor address]Release Information Statement introduced before Junos OS Release 10.2 for J-EX Series switches.Description Metric for all routes sent using the multiple exit discriminator (MED, or MULTI_EXIT_DISC)path attribute in update messages. This path attribute is used to discriminate amongmultiple exit points to a neighboring AS. If all other factors are equal, the exit point withthe lowest metric is preferred.You can specify a constant metric value by including the metric option. For configurationsin which a BGP peer sends third-party next hops that require the local system to performnext-hop resolution—IBGP configurations, configurations within confederation peers, orEBGP configurations that include the multihop command—you can specify a variablemetric by including the minimum-igp or igp option.You can increase or decrease the variable metric calculated from the IGP metric (eitherfrom the igp or igp-minimum statement) by specifying a value for offset. The metric isincreased by specifying a positive value for offset, and decreased by specifying a negativevalue for offset.You can specify for a BGP group or peer not to advertise updates for the MED pathattributes used to calculate IGP costs for BGP next hops unless the MED is lower. Youcan also configure an interval to delay when MED updates are sent by including themed-igp-update-interval minutes at the [edit routing-options] hierarchy level.Options delay-med-update—Specify for a BGP group or peer configured with the metric-out igpstatement not to advertise MED updates when the value worsens, that is, unless thevalue is lower.1615Chapter 73: Configuration Statements for Layer 3 Protocols
