Have you a Huawei NE series router and a Cisco Nexus switch? Do you have to enable communication between a router’s L3 sub-interface and a and the switch trunk? Yes? Ok, so this post is 4 you!
- in Huawei ARP broadcast is not enabled in sub-interfaces so a packet entering in the subif is discarded by the system beacause is considered as a blackhole route.
- Cisco & Huawei don’t have a good auto negotiation so you should set them manually on both side.
here you are:
HUAWEI: # interface GigabitEthernet0/5/0 description to Switch undo negotiation auto speed 1000 duplex full undo shutdown trap-threshold input-rate 1 resume-rate 1 trap-threshold output-rate 1 resume-rate 1 undo lldp enable undo dcn # interface GigabitEthernet0/5/0.15 description to Switch * subif vlan 15 ip address 192.168.15.10 255.255.255.0 statistic enable encapsulation dot1q-termination dot1q termination vid 15 arp broadcast enable # CISCO: # interface GigabitEthernet3/1 description to Router no negotiation auto switchport switchport trunk encapsulation dot1q switchport trunk alloweb vlan 5,10,15 switchport mode trunk #