Two ACXs configured with an ESI LAG:
ACX4:
set interfaces ae1 flexible-vlan-tagging
set interfaces ae1 mtu 9000
set interfaces ae1 encapsulation flexible-ethernet-services
set interfaces ae1 esi 00:02:00:00:00:00:01:00:00:11
set interfaces ae1 esi all-active
set interfaces ae1 aggregated-ether-options lacp active
set interfaces ae1 aggregated-ether-options lacp system-id 02:00:00:00:00:01
set interfaces ae1 unit 21 encapsulation vlan-bridge
set interfaces ae1 unit 21 vlan-id 21
set interfaces ae1 unit 22 encapsulation vlan-bridge
set interfaces ae1 unit 22 vlan-id 22
set interfaces ae1 unit 23 encapsulation vlan-bridge
set interfaces ae1 unit 23 vlan-id 23
ACX8:
Are seeing higher than expected failover times. ACX8 is the DF for the ESI:
lab@acx7024-8> show evpn instance ri-vlan-awre extensive
Jul 17 16:09:20
Instance: ri-vlan-awre
Route Distinguisher: 10.0.0.8:2123
Per-instance MAC route label: 4416
Control word enabled
Duplicate MAC detection threshold: 5
Duplicate MAC detection window: 180
MAC database status Local Remote
MAC advertisements: 9 12
MAC+IP advertisements: 8 11
Default gateway MAC advertisements: 3 0
Number of local interfaces: 7 (7 up)
Interface name ESI Mode Status AC-Role
.local..54 00:00:00:00:00:00:00:00:00:00 single-homed Up Root
ae1.21 00:02:00:00:00:00:01:00:00:11 all-active Up Root
ae1.22 00:02:00:00:00:00:01:00:00:11 all-active Up Root
ae1.23 00:02:00:00:00:00:01:00:00:11 all-active Up Root
et-0/0/3.21 00:00:00:00:00:00:00:00:00:00 single-homed Up Root
et-0/0/3.22 00:00:00:00:00:00:00:00:00:00 single-homed Up Root
et-0/0/3.23 00:00:00:00:00:00:00:00:00:00 single-homed Up Root
Number of IRB interfaces: 3 (3 up)
Interface name VLAN VNI Status L3 context
irb.21 21 Up master
irb.22 22 Up master
irb.23 23 Up master
Number of protect interfaces: 0
Number of bridge domains: 3
VLAN Domain-ID Intfs/up IRB-intf Mode MAC-sync v4-SG-sync v6-SG-sync
21 2 2 irb.21 Extended Enabled Enabled Disabled
22 2 2 irb.22 Extended Enabled Enabled Disabled
23 2 2 irb.23 Extended Enabled Enabled Disabled
Number of neighbors: 4
Address MAC MAC+IP AD IM ES Leaf-label DCI-Peer Flow-label DT2U-SID DT2M-SID
10.0.0.1 3 3 0 3 0 NO
10.0.0.2 3 3 0 3 0 NO
10.0.0.3 3 3 0 3 0 NO
10.0.0.4 3 2 4 3 0 NO
Number of ethernet segments: 4
ESI: 00:02:00:00:00:00:01:00:00:11
Status: Resolved by IFL ae1.21
Local interface: ae1.23, Status: Up/Forwarding
Number of remote PEs connected: 1
Remote-PE MAC-label Aliasing-label Mode
10.0.0.4 0 0 all-active
Vlan: 21
Remote PE MAC label Aliasing label Mode
10.0.0.4 17 17 all-active
Vlan: 22
Status: Resolved by IFL ae1.22
10.0.0.4 18 18 all-active
Vlan: 23
Status: Resolved by IFL ae1.23
10.0.0.4 19 19 all-active
DF Election Algorithm: MOD based
Designated forwarder: 10.0.0.8
Backup forwarder: 10.0.0.4
Last designated forwarder update: Jul 17 15:44:46
Advertised split horizon label: 4443
ESI: 05:00:01:00:0e:00:00:00:15:00
Local interface: irb.21, Status: Up/Forwarding
ESI: 05:00:01:00:0e:00:00:00:16:00
Local interface: irb.22, Status: Up/Forwarding
ESI: 05:00:01:00:0e:00:00:00:17:00
Local interface: irb.23, Status: Up/Forwarding
SMET Forwarding: Disabled
Traffic is flowing out 0/0/2 on ACX8:
lab@acx7024-8> show interfaces et-0/0/2 | match "Output rate"
Jul 17 16:18:04
Output rate : 932440488 bps (455293 pps)
The laser is then disabled on the peer device to simulate a link fault. Traffic generators keeping track of loss report ~900ms of loss before the traffic moves to ACX4.
Slower than expected ESI lag failover
50msec convergence during CE-PE link cut is not expected without Egress Link Protection or ELP. ELP support is coming in 24.4R1-EVO