Re: How to filter VPN4 address using route-map

[Jana Babovakova via Bird-users]

Hi Ramanathan.




if net.rd = 1:100 && net ~ [ 60.0.0.0/24 ] then ...


I hope this helps.
Jana

Jana Babovakova | BIRD Tech Support | CZ.NIC, z.s.p.o.

On 23. 02. 25 3:55, Ramanathan Selvamani wrote:

We do not currently support such prefix set (your route map) filtering. But you can use the following approach instead:

Hi Team,
I would like to filter a VPN4 address using route-map.
For example, I have the below VPN4 address learnt through BGP neighbor on
"L2VPN EVPN" channel.

Table vpntab4:
1:222 90.0.0.0/24    unicast [EVPN_4_4_4_4 2025-02-21] * (160)
1:100 60.0.0.0/24    unicast [BGP_4_4_4_4 17:45:37.617 from 4.4.4.4] * E
(156/1) [AS400?]
4.4.4.4:222 70.0.0.0/24 unicast [BGP_4_4_4_4 17:45:37.617 from 4.4.4.4] * E
(156/1) [AS400?]
1:111 151.1.1.0/24   unicast [EVPN_4_4_4_4 2025-02-21] * (160)

I want to create a route-map to accept only 1:100 60.0.0.0/24 and reject
all the rest.

When I tried the below configuration in route-map, I got a syntax error on
the below line.

if(net ~ [1:100 60.0.0.0/24]) then { return 2;}

Similarly, is there any way to filter the VPN4 address using its RD value ?

Thanks,
Ramanathan

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