MPLS L3 VPN query

Hi all,

I have a weird doubt when redistributing EIGRP or OSPF or ISIS into MPBGP
update to another PE and again MPBGP is redistributed into EIGRP or OSPF or
ISIS.
How does BGP carry EIGRP info or OSPF info or ISIS info such as ( Area for
OSPF, internal route or external route what is the area type or lsa type)
or for EIGRP ( AS number , Delay, BW). I know for EIGRP , there is extended
bgp communites attributes to carry for EIGRP .. ( which is
8801,8802,8803,8804,8805)

But wat about OSPF or ISIS into BGP ( how does BGP carry OSPF or ISIS
routes) ? Is there any extended community attributes for this?

And also how does OSPF or ISIS carry BGP updates from one end to another
end ? Is there any extended TLVS for it or else is there any other
extended headers for OSPF or ISIS to carry BGP information.

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Received on Thu Jan 19 2012 - 21:22:42 ART