Hello,
You redistributed 4.4.4.1/32, 5.5.5.1/32, 10.235.0.0/16 and 192.168.2.16/28
into BGP and BGP "daemon" needs to "define"/"construct" an ORIGIN attribute
for these routes before sending (ORIGIN is mandatory attribute so it must be
"attached" to BGP route). The reason You are seeing it every minute is due
to well-known BGP scanner process waking up once a minute.
In a short: these messages are harmless unless the debug is permanently on
which is bad for CPU utilization.
HTH,
Cheers
Alex
"Eli" <> wrote in message
news: om...
> RTR-A is a foreign (external) router, feeding BGP routes into my
> RTR-B in the DMZ. To further feed those routes into my internal
> network, internal RTR-C maintains a BGP neighbourhood with RTR-B
> through a firewall. Thus my topology is as follows:
>
> RTR-A (as 65520) --> RTR-B (as 65521) --> FW1 --> RTR-C (as 1)
>
> When a DEBUG IP BGP is activated in RTR-B, the message " BGP: Applying
> map to find origin " is sent every minute. Is this a point for
> concern?
>
> The Network numbers whose origin is referred to are defined in RTR-B
> as follows:
>
> interface Loopback4
> ip address 4.4.4.1 255.255.255.255
> !
> interface Loopback5
> ip address 5.5.5.1 255.255.255.255
> !
> ip route 10.235.0.0 255.255.0.0 Null0
>
> Here are the BGP configurations and a full bgp debug output:
>
> RTC-B:
> -----
> router bgp 65521
> no synchronization
> bgp log-neighbor-changes
> network 4.4.4.1 mask 255.255.255.255
> network 5.5.5.1 mask 255.255.255.255
> network 10.235.0.0 mask 255.255.0.0
> network 192.168.2.16 mask 255.255.255.240
> neighbor RTR-A remote-as 65520
> neighbor RTR-C remote-as 1
> neighbor RTR-C ebgp-multihop 255
>
> router bgp 1
> bgp log-neighbor-changes
> neighbor RTR-B remote-as 65521
> neighbor RTR-B ebgp-multihop 255
> neighbor RTR-B update-source Loopback0
> !
>
>
>
> Cyber-J#
> Sep 8 09:34:10: BGP: RTR-A sending KEEPALIVE (io)
> Sep 8 09:34:12: BGP: RTR-A received KEEPALIVE, length (excl. header)
> 0
> Sep 8 09:34:17: BGP: Import timer expired. Walking from 1 to 1
> Sep 8 09:34:32: BGP: Performing BGP general scanning
> Sep 8 09:34:32: BGP(0): scanning IPv4 Unicast routing tables
> Sep 8 09:34:32: BGP: Applying map to find origin for 4.4.4.1/32
> Sep 8 09:34:32: BGP: Applying map to find origin for 5.5.5.1/32
> Sep 8 09:34:32: BGP: Applying map to find origin for 10.235.0.0/16
> Sep 8 09:34:32: BGP: Applying map to find origin for 192.168.2.16/28
> Sep 8 09:34:32: BGP(IPv4 Unicast): Performing BGP Nexthop scanning
> for general scan
> Sep 8 09:34:32: BGP(1): scanning IPv6 Unicast routing tables
> Sep 8 09:34:32: BGP(IPv6 Unicast): Performing BGP Nexthop scanning
> for general scan
> Sep 8 09:34:32: BGP(2): scanning VPNv4 Unicast routing tables
> Sep 8 09:34:32: BGP(VPNv4 Unicast): Performing BGP Nexthop scanning
> for general scan
> Sep 8 09:34:32: BGP(3): scanning IPv4 Multicast routing tables
> Sep 8 09:34:32: BGP(IPv4 Multicast): Performing BGP Nexthop scanning
> for general scan
> Sep 8 09:34:43: BGP: RTR-C received KEEPALIVE, length (excl. header)
> 0
> Sep 8 09:34:45: BGP: RTR-C sending KEEPALIVE (io)
> Sep 8 09:34:47: BGP: Import timer expired. Walking from 1 to 1
> Sep 8 09:35:02: BGP: Import timer expired. Walking from 1 to 1
> Sep 8 09:35:10: BGP: RTR-A sending KEEPALIVE (io)
> Sep 8 09:35:12: BGP: RTR-A received KEEPALIVE, length (excl. header)
> 0
> Sep 8 09:35:17: BGP: Import timer expired. Walking from 1 to 1
> Sep 8 09:35:32: BGP: Performing BGP general scanning
> Sep 8 09:35:32: BGP(0): scanning IPv4 Unicast routing tables
> Sep 8 09:35:32: BGP: Applying map to find origin for 4.4.4.1/32
> Sep 8 09:35:32: BGP: Applying map to find origin for 5.5.5.1/32
> Sep 8 09:35:32: BGP: Applying map to find origin for 10.235.0.0/16
> Sep 8 09:35:32: BGP: Applying map to find origin for 192.168.2.16/28
> Sep 8 09:35:32: BGP(IPv4 Unicast): Performing BGP Nexthop scanning
> for general scan
> Sep 8 09:35:32: BGP(1): scanning IPv6 Unicast routing tables
> Sep 8 09:35:32: BGP(IPv6 Unicast): Performing BGP Nexthop scanning
> for general scan
> Sep 8 09:35:32: BGP(2): scanning VPNv4 Unicast routing tables
> Sep 8 09:35:32: BGP(VPNv4 Unicast): Performing BGP Nexthop scanning
> for general scan
> Sep 8 09:35:32: BGP(3): scanning IPv4 Multicast routing tables
> Sep 8 09:35:32: BGP(IPv4 Multicast): Performing BGP Nexthop scanning
> for general scan
> All possible debugging has been turned off
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