Based on this url https://www.juniper.net/documentation/en_US/junos/topics/topic-map/mc-lag-high-availability-l3-vrrp-macsync.html#id-example-configuring-multichassis-link-aggregation-for-layer-3-unicast-using-mac-address-synchronization
"You can choose either to synchronize the MAC addresses for the Layer 3 interfaces of the switches participating in the MC-LAG, or you can configure Virtual Router Redundancy Protocol (VRRP), but you cannot configure both at the same time."
It said cannot use at same time. But when i look on config on that url the "mcae-mac-synchronize" was tie into irb interface. So it should not have issue right if we mix in one MC-LAG interface with VRRP and mcae-mac-synchronize with different irb? For example irb.40 i'm use VRRP method and irb.50 i'm use mcae-mac-synchronize method.
Thanks and appreciate any feedback.
Here are some caveats with configuring MAC address synchronization:
Use MAC address synchronization if you are not planning to run routing protocols on the IRB interfaces.
MAC address synchronization does not support routing protocols on IRB interfaces, and routing protocols are not supported with downstream MC-LAG clients. If you need routing capability, configure both VRRP and routing protocols on each MC-LAG peer. Routing protocols are supported on upstream routers."
The MTU for an IRB interface is calculated by removing the Ethernet header overhead [6(DMAC)+6(SMAC)+2(EtherType)]. Because, the MTU is the lower value of the MTU configured on the IRB interface and the MTU configured on the IRB's associated bridge domain IFDs or IFLs, the IRB MTU is calculated as follows:
In case of Layer 2 IFL configured with the flexible-vlan-tagging statement, the IRB MTU is calculated by including 8 bytes overhead (SVLAN+CVLAN).