No prefixes from EIGRP neighbor

Hi Experts,

 We got an new EtherVPN (Layer 2 VPN) network and run EIGRP between all
routers connected to this.
 For example: If R1,R2,R3,R4,R5 &R6 are 6 sites, each router is configured
with an IP address from the subnet 192.168.251.0/24 on the
 WAN interface.

 If I do a show ip eigrp neighbor on router, I can see all other 5 routers
as the neighbors.

 But if I do a show ip eigrp neighbor detail, it doesn't show prefix for
certain neighbors.
 For example, if R6 advertises 3 prefixes, I can see them all on R1 but
none on R2.

 Our Service Provider mentioned they can't see any fault as we have IP
connectivity between all sites.

 We are using ISR G2 routers (Cisco 2951 & 1921s;
IOS universalk9-mz.SPA.150-1.M4).
 Any help with this is much appreciated.

Thanks,
Dee

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Received on Wed Feb 01 2012 - 06:58:51 ART