BGP as-path prepend using route map and ip prefix-list causing issues

[thomuff]

HI,

At my location B, I want to advertise Location A subnets but prepend to make less preferred.   

  I start having issues on Location B WAN circuit when apply config

route-map BGP_Filter_Out_MPLS permit 10
 match ip address prefix-list LocationA-Subnet
 set as-path prepend 64512
!
route-map BGP_Filter_Out_MPLS permit 20
 match ip address prefix-list LocationB-Subnet

router bgp 64512

network 192.168.1.0 mask 255.255.255.0

network 192.168.2.0 mask 255.255.255.0

network 192.168.3.0 mask 255.255.255.0

network 192.168.4.0 mask 255.255.255.252

neighbor 192.168.4.1 remote-as 55757

neighbor 192.168.4.1 route-map BGP_Filter_Out_MPLS out

ip prefix-list LocationA-Subnet description  subnet(s)
ip prefix-list LocationA-Subnet seq 5 permit 192.168.1.0/24

ip prefix-list LocationA-Subnet seq 10 permit 192.168.3.0/24

ip prefix-list LocationB-Subnet description  subnet(s)
ip prefix-list LocationB-Subnet seq 5 permit 192.168.2.0/24

ip prefix-list LocationB-Subnet seq 10 permit 192.168.4.0/30

i am running 12.4(11)T4  on a 2811

Thanks

[Bilal Nawaz]

Hello, What issues are you experiencing exactly?

[thomuff]

I started dropping packets when applied.  My carrier does a ping to my end of the circuit and I tried to ping them.  I was thinking it 75 percent packet loss.   As soon as I removed the  neighbor statement, all returned to normal.