Re: [ovs-discuss] using OVS with FRR within eVPN environment

[Raymond Burkholder]

On 2019-07-04 1:30 a.m., Lee Wilson via discuss wrote:
The only way i have seen it done is as per below example.. This is a 
script i found on this forum which creates a veth between the kernel 
bridge and the ovs-switch.

... script cut out 

This works, though using veth seems like a bit of a hack.. Is there a 
better way to do this? Is anyone else using ovs with frr and evpn?


You may want to follow up on the FRR list.  There were some other 
experimental tie-ins to OVS via a different feature set.  I don't know 
if any progress has been made on this particular integration in order to 
bypass the 'hack' in the script.


Raymond



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[ovs-discuss] using OVS with FRR within eVPN environment

[Lee Wilson via discuss]

Hi All,

Container > openvswitch vlan500 > vxlan 1000 FRR > BGP eVPN

I am using openvswitch to connect containers within a gentoo host, though I 
have been struggling to get the macs within the fdb used by FRR installed on 
the same host for propagation into a BGP eVPN network.

The only way i have seen it done is as per below example.. This is a script i 
found on this forum which creates a veth between the kernel bridge and the 
ovs-switch.

(VXLAN VNI=1000 VLAN=500)

# kernel bridge, bring it up without spanning tree
brctl addbr br1000
ip link set dev br1000 up
brctl stp br1000 off
# create vxlan interface, where VNI is tied to vni in FRR, lo is a loopback or 
main interface
ip link add vx1000 type vxlan id 1000 dstport 4789 local ${lo} nolearning
# add the vxlan interface to kernel bridge, bring it up
brctl addif br1000 vx1000
ip link set dev vx1000 up
# add a veth to tie kernel bridge to ovs
ip link add vo1000 type veth peer name vb1000
# add veth to kernel bridge
brctl addif br1000 vb1000
# add veth to ovs bridge
ovs-vsctl --if-exists del-port br-int vo1000
ovs-vsctl add-port br-int vo1000 tag=500
# bring up both ends of veth
ip link set dev vo1000 up
ip link set dev vb1000 up


This works, though using veth seems like a bit of a hack.. Is there a better 
way to do this? Is anyone else using ovs with frr and evpn?

regards,
Lee.



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