I have 4 total routers/switches configured to be part of the same MAC-VRF. 2x Juniper vMXs and 2 Arista vEOS. I have 2x CE routers. Each is dual homed to one Juniper device and one Arista device.
Here is what the routing-instance (MAC-VRF) on both routers looks like.
Here is what the PE facing interfaces look like for each vendor. You’ll notice on the Juniper equipment I have the system-priority set to 32k. YOU MUST CONFIGURE THIS. Juniper defaults to a value of 127 and Arista defaults to a value of 32k. You can probably configure this on the Arista side as well I just have not spent the time to find it in the documentation yet.
Juniper MX
root@R1# show interfaces ge-0/0/5
gigether-options {
802.3ad ae1;
}
root@R1# show interfaces ae1
flexible-vlan-tagging;
encapsulation flexible-ethernet-services;
esi {
00:00:00:00:00:00:00:00:00:bb;
all-active;
}
aggregated-ether-options {
link-speed 1g;
lacp {
active;
periodic fast;
system-priority 32k;
system-id 00:00:00:00:00:bb;
}
}
unit 10 {
encapsulation vlan-bridge;
vlan-id 10;
}
unit 11 {
encapsulation vlan-bridge;
vlan-id 11;
}Arista
R4#show running-config interfaces ethernet 5
interface Ethernet5
channel-group 2 mode active
lacp timer fast
R4#show running-config interfaces port-Channel 2
interface Port-Channel2
switchport trunk allowed vlan 10-11
switchport mode trunk
!
evpn ethernet-segment
identifier 0000:0000:0000:0000:00bb
lacp system-id 0000.0000.00bbCE Validation
Here is where I discovered the default system-priorities are different.
Before Setting System-Priority
CE4(config)#show interfaces port-Channel 1
Port-Channel1 is up, line protocol is up (connected)
Hardware is Port-Channel, address is 5000.006f.20c3
IP MTU 1500 bytes (default), BW 1000000 kbit
Full-duplex, 1Gb/s
Active members in this channel: 1
... Ethernet8 , Full-duplex, 1Gb/s
CE4(config)#show lacp interface all
State: A = Active, P = Passive; S=ShortTimeout, L=LongTimeout;
G = Aggregable, I = Individual; s+=InSync, s-=OutOfSync;
C = Collecting, X = state machine expired,
D = Distributing, d = default neighbor state
| Partner
Port Status | Sys-id Port# State OperKey PortPri
---- ----------------|----------------------- ------ -------- -------- --------
Port Channel Port-Channel1:
Et7 Mismatched Agg! | 007F,00-00-00-00-00-bb 1 ASGs+ 0x0002 127
Et8 Bundled | 8000,00-00-00-00-00-bb 5 ASGs+CD 0x0002 32768
| Actor
Port Status |Port# State OperKey PortPriority TimeoutMultiplier
---- -----------------|------ -------- -------- ------------- -----------------
Port Channel Port-Channel1:
Et7 Mismatched Agg! | 7 ASGs- 0x0001 32768
Et8 Bundled | 8 ASGs+CD 0x0001 32768
After Setting System-Priority
CE4(config)#show interfaces port-Channel 1
Port-Channel1 is up, line protocol is up (connected)
Hardware is Port-Channel, address is 5000.006f.20c3
IP MTU 1500 bytes (default), BW 2000000 kbit
Full-duplex, 2Gb/s
Active members in this channel: 2
... Ethernet7 , Full-duplex, 1Gb/s
... Ethernet8 , Full-duplex, 1Gb/s
CE4(config)#show lacp interface all
State: A = Active, P = Passive; S=ShortTimeout, L=LongTimeout;
G = Aggregable, I = Individual; s+=InSync, s-=OutOfSync;
C = Collecting, X = state machine expired,
D = Distributing, d = default neighbor state
| Partner Actor
Port Status | Sys-id Port# State OperKey PortPri Port#
---- --------|------------------------ ------ -------- -------- -------- ------
Port Channel Port-Channel1:
Et7 Bundled | 8000,00-00-00-00-00-bb 1 ASGs+CD 0x0002 127 7
Et8 Bundled | 8000,00-00-00-00-00-bb 5 ASGs+CD 0x0002 32768 8
| Actor
Port Status | State OperKey PortPriority TimeoutMultiplier
------- ------------|----------- ----------- ---------------- -----------------
Port Channel Port-Channel1:
Et7 Bundled | ASGs+CD 0x0001 32768
Et8 Bundled | ASGs+CD 0x0001 32768
Service Provider Side Validation
I’ll try to add some more information here, one day.
root@R1# run show interfaces ae1
Physical interface: ae1, Enabled, Physical link is Up
Interface index: 129, SNMP ifIndex: 550
Link-level type: Flexible-Ethernet, MTU: 1522, Speed: 1Gbps, BPDU Error: None,
...
root@R1# run show route table bgp.evpn.0
bgp.evpn.0: 34 destinations, 38 routes (34 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both
...
1:0.0.0.123:123::bb::0/192 AD/EVI
*[EVPN/170] 00:02:55
Indirect
[BGP/170] 00:25:38, localpref 100, from 10.255.255.4
AS path: I, validation-state: unverified
> to 10.0.2.1 via ge-0/0/2.0
...
1:10.255.255.1:0::bb::FFFF:FFFF/192 AD/ESI
*[EVPN/170] 00:02:54
Indirect
...
1:10.255.255.4:1::bb::FFFF:FFFF/192 AD/ESI
*[BGP/170] 00:25:38, localpref 100, from 10.255.255.4
AS path: I, validation-state: unverified
> to 10.0.2.1 via ge-0/0/2.0
R4#show interfaces port-Channel 2
Port-Channel2 is up, line protocol is up (connected)
Hardware is Port-Channel, address is 5000.0002.0005
Ethernet MTU 9214 bytes, BW 1000000 kbit
Full-duplex, 1Gb/s
Active members in this channel: 1
... Ethernet5 , Full-duplex, 1Gb/s
...
R4#show bgp evpn
BGP routing table information for VRF default
Router identifier 10.255.255.4, local AS number 123
Route status codes: * - valid, > - active, S - Stale, E - ECMP head, e - ECMP
c - Contributing to ECMP, % - Pending BGP convergence
Origin codes: i - IGP, e - EGP, ? - incomplete
AS Path Attributes: Or-ID - Originator ID, C-LST - Cluster List, LL Nexthop - Link Local Nexthop
Network Next Hop Metric LocPref Weight Path
...
* > RD: 0.0.0.123:123 auto-discovery 0 0000:0000:0000:0000:00bb
- - - 0 i
* RD: 0.0.0.123:123 auto-discovery 0 0000:0000:0000:0000:00bb
10.255.255.1 - 100 0 i
* > RD: 10.255.255.1:0 auto-discovery 0000:0000:0000:0000:00bb
10.255.255.1 - 100 0 i
* > RD: 10.255.255.4:1 auto-discovery 0000:0000:0000:0000:00bb
- - - 0 i
...
* > RD: 10.255.255.1:0 ethernet-segment 0000:0000:0000:0000:00bb 10.255.255.1
10.255.255.1 - 100 0 i
Work, and stuff 