[c-nsp] OSPF routing question

[Lee Starnes]

Hello everyone,

I have a question about OSPF route redistribution. We have no issues
redistributing subnets in the network out of our /19 blocks. But we have a
/22 block that the entire /22 is allocated to a single client. The routes
redistribute across all the all switches except back to the edge routers
that announce them via BGP to our upstream carriers. This being because
there are holdown routes for the BGP on this of the same size IP block. Is
there a way to allow the /22 block to propagate to the edge routers and
still maintain the hold down routes we need to announce that /22 via BGP to
our various upstream carriers?

Edge routers are configured as such:

router static
 address-family ipv4 unicast
 45.x.x.0/22 Null0 19

router bgp ASNUMBER
address-family ipv4 unicast
network 45.x.x.0/22


router ospf NUMBER
 log adjacency changes
 redistribute connected
 redistribute static
 area W.X.Y.Z
  !
  interface TenGigE0/3/0/0
   passive disable
  !
  interface TenGigE0/3/3/0
   passive disable
  !


Any ideas are greatly appreciated.

-Lee