07-25-2013 12:32 PM - edited 03-07-2019 02:35 PM
Hello Experts,
We have three sites among one is the datacentre. these sites are running with dynamic routing protocol as OSPF. and they are configured as ospf backbone area i.e area 0.
Site1----Area0-----Datacentre----Area0-----Site2
My question is I see the routes learnt from data centre in the ospf database as LSA-5. but my datacentre and Site2 doesnt have any external routing protocol configured nor redistributed but, only static routes are redistributed in both.
Y it is showing the learnt routes are of LSA5 from Datacentre.
Type-5 AS External Link States
Link ID ADV Router Age Seq# Checksum Tag
10.0.0.0 10.24.202.10 1577 0x8000C7B2 0x002CA7 13
10.0.0.0 10.24.254.220 1112 0x80008CDD 0x00E6EA 13
10.0.109.0 10.24.202.10 1577 0x80004686 0x0055BE 13
10.0.109.0 10.24.254.220 1112 0x80000BDF 0x00B330 13
10.0.126.252 10.24.202.10 1577 0x8000C257 0x00A018 13
10.0.126.252 110.24.254.220 1112 0x80008CDA 0x009BBD 13
10.0.127.235 10.24.202.10 1577 0x8000633E 0x0090B0 13
10.0.127.235 10.24.254.220 1112 0x80006334 0x000435 13
10.0.127.236 10.24.254.220 1577 0x80006336 0x0096B1 13
Thanks,
Srikanth
07-25-2013 12:40 PM
Hi Srikanth,
This is normal behavior. Static routes redistributed in OSPF should be seen as external routes (LSA type 5).
Regards
07-25-2013 01:06 PM
So some of them are not static routes but just advertised with the network command.... so even these are in LSA5..what could be the reason?
07-25-2013 01:10 PM
Srikanth,
The network statement should not generate type 5 LSA's. Is it possible that you are doing "redistribute connected"?
Regards
07-25-2013 10:42 PM
Hello Srikanth,
so you have Site1, Site2 and DC in OSPF Area 0.
Is that Area 0 continuous, including the (WAN?) links which interconnect them?
If not, your Area 0 is partitioned and if the WAN service is a MPLS VPN, the type of the inserted remote OSPF routes depend on you service provider's setup:
Hope that helps
Rolf
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