[c-nsp] OSPF over multilink

[Mrt Murat]

hi, 
i want to ask a question about ospf over multilink configuration. In our ospf backbone ,we configured links between each peer  routers  with ppp multilink, you could find this configuration below. but when one of the links, included in the ppp multilink, goes down , data transfer over multilink stop approximately 30-40 second then again start passing to other site. when we disable multilink config , this problem can not occur. 

interface Multilink1
 ip address 10.0.252.9 255.255.255.252
 no ip directed-broadcast
 no ip route-cache cef
 no ip route-cache
 ip ospf network point-to-point
 no cdp enable
 ppp multilink
 multilink-group 1

interface Serial4/0/0
 no ip address
 no ip directed-broadcast
 encapsulation ppp
 no ip route-cache distributed
 no cdp enable
 ppp multilink
 multilink-group 1

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thanks for all help,
taha