7.14 BGP Redistribute Internal

hi

just need to understand first the question

Configure R4 and R6 to advertise the network 155.X.0.0/16 to AS 54.
• Configure BGP to IGP redistribution on R3 so that all internal devices
have reachability to the prefixes learned from AS 54

to advertise network in bgp there are three methodes

first via netwok  IP mask

second redistribtue bgp to igp

third via agreggate adress

so here can I say because I don't have a match for netwok 155.1.0.0/16 so I eliminated the cde network

if I use the cde redistribute , perhaps in the text they have to use the word redistribue

so left only the cde agregate

need to understand that question too Configure BGP to IGP redistribution on R3 so that all internal devices
have reachability to the prefixes learned from AS 54

thanks