05-19-2021 04:46 PM
Hello everyone,
I'm currently facing an issue with traffic load-balancing on bundle interface.
In the attachment file is my network diagram.
1. There is a LAG (BE5) of 4 members between ASR9k6-R1 and ASR9k6-R2
2. The downlink flow is ISP_02 -> ASR9k6-R2 -> ASR9k6-R1 -> Firewall
3. On ASR9k6-R1: Interfaces Hu0/3/0/0, Bundle-Ether1, Bundle-Ether5 are configured on same bridge-domain with VLAN ID 36
4. On ASR9k6-R2: Interfaces Hu0/3/0/0, Bundle-Ether1, Bundle-Ether5 are configured on same bridge-domain with VLAN ID 36
5. a VRRP is running between ASR9k6-R1 <-> ASR9k6-R2. This VRRP is used as GW by the firewall for Uplink.
With the below configuration, the traffic is not shared properly between the 4 members of Bundle-Ether5.
Solved! Go to Solution.
05-20-2021 07:10 AM
Hey,
I think this command " bundle load-balancing hash auto" on Bundle5 sub-int is breaking it. It just tells you to select one link automatically. Bundle level load-balancing (LB) config is stronger than l2vpn level one so src-dst-ip LB is not applied here.
Try removing it to see if helps (mind that your traffic should have good SRC/DST IP variability for LB to work).
You can check details on LB CLI priorities here:
Niko
05-20-2021 07:10 AM
Hey,
I think this command " bundle load-balancing hash auto" on Bundle5 sub-int is breaking it. It just tells you to select one link automatically. Bundle level load-balancing (LB) config is stronger than l2vpn level one so src-dst-ip LB is not applied here.
Try removing it to see if helps (mind that your traffic should have good SRC/DST IP variability for LB to work).
You can check details on LB CLI priorities here:
Niko
05-21-2021 07:38 AM
Many thanks Niko,
I have removed the line "bundle load-balancing hash auto" on Bundle5 sub-int and I have a good result.
I have also added
interface Bundle-Ether5
lacp cisco enable link-order signaled dst-ip <= on ASR9k6-R1 and
lacp cisco enable link-order signaled dst-ip <= on ASR9k6-R2
Regards//
Kouacou Célestin
05-21-2021 08:15 AM
Awesome, glad it helped!
Niko
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