[a-nsp] dhcp relay in evpn

[Tyler Conrad]

Hey James,

Have you tried this yet?
https://www.arista.com/en/support/toi/eos-4-25-1f/14626-head-end-replicated-dhcp-packets-suppression-in-vxlan-network


On Mon, Apr 15, 2024 at 06:13 Chen Jiang via arista-nsp <
arista-nsp at puck.nether.net> wrote:

> Hi! Experts
>
> I am testing dhcp relay in evpn/vxlan scenario and configured every leaf
> switchess to relay dhcp messages to the server, but found that the dhcp
> server received relayed messages from every leaf, I think it may be caused
> by the dhcp discover message be flooding to every leaf and then be relayed
> by every leaf.
>
> Is it expected behaviour? I have thought it should only be relayed  by the
> ingress leaf. Thanks .
>
> Below is my dhcp relay configuration:
> interface Vlan102
>    vrf v101
>    ip dhcp relay all-subnets
>    ip helper-address 192.168.104.2 source-interface Loopback2
>    ip address virtual 192.168.102.254/24
> !
> interface Vxlan1
>    vxlan source-interface Loopback1
>    vxlan udp-port 4789
>    vxlan vlan 1-200 vni 1-200
>    vxlan vrf v101 vni 10101
> !
>
>
> --
> BR!
>
>
>
>            James Chen
> --
> arista-nsp mailing list
> arista-nsp at puck.nether.net
> https://puck.nether.net/mailman/listinfo/arista-nsp
>
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