vEdge (viptela OS) の機器で Interface の speed duplex を 100 full や 10 full などの固定設定で使用する際は、autonegotiate を無効にしてご利用ください。
例)
vedge(config)# vpn 0
vedge(config-vpn-0)# interface ge0/0
vedge(config-interface-ge0/0)# no autonegotiate
vedge(config-interface-ge0/0)# speed 100
vedge(config-interface-ge0/0)# duplex full
vedge(config-interface-ge0/0)# commit
参考:
Command reference : autonegotiate
"To use a fixed speed and duplex configuration for interfaces that do not support autonegotiation, you must disable autonegotiation and then use the speed and duplex commands to set the appropriate interface link characteristics."