设备为6749P2108版本
接口开启开启用户流量排行后对应网段无法固化:


1、经测试,接口关闭用户流量排行后即可进行ARP固化
2、检查配置暂未发现异常
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interface GigabitEthernet10/5
port link-mode route
description LAN-interface
ip address 192.169.x.x 255.255.254.0
arp max-learning-num 0
nat hairpin enable
undo dhcp select server
ip subscriber l2-connected enable
ip subscriber initiator dhcp enable
ip subscriber initiator unclassified-ip enable
ip subscriber dhcp domain ipoeenabledomain
ip subscriber unclassified-ip domain ipoeenabledomain
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经确认,该版本WEB侧暂不支持该功能,但是可以在命令行下发,现场在命令行下发arp static x.x.x.x H-H-H后在web界面也有回显。