BGP metric

From: KK FoK (rgb98a@xxxxxxxxxxx)
Date: Wed Dec 05 2001 - 13:05:51 GMT-3

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My observation is that when doing redistribution IGP to BGP the IGP metric
will be carried over to BGP if no metric is specified. The BGP routes and
metrics will then be proprograted to all neighbors.

What is bothering me is that I saw that some lab practice questions
specifically ask you to use IGP metrics as the BGP metric. Isn't that IGP
metric carried over to BGP automatic ?

About the lab practice, the suggested answer :
router 1 bgp
redistribute ospf 10
neighbor 10.0.0.1 route-map igp_metric out

route-map igp_metric
set metric-type internal

Before looking at the answer, my attempt was :
router 1 bgp
redistribute ospf 10 route-map igp_metric

route-map igp_metric
set metric-type internal

Can anyone advise if my observation is correct and which is the correct way
to use IGP metric as BGP metric ?

Thanks

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