我有Cisco N9K-C9396PXL3 交换机，它为我的 LAN 网关配置了 VLAN 接口，我想监控 vlanXXX 处理的流量，我已配置 SNMP 监控以提取接口流量，但 VLAN 接口始终为空

N9K# show interface vlan 200
Vlan200 is up, line protocol is up, autostate disabled
  Hardware is EtherSVI, address is  58f3.9ca9.d769
  Description: *** LAN ***  Internet Address is 10.20.30.1/24
  MTU 9216 bytes, BW 1000000 Kbit, DLY 10 usec,
   reliability 255/255, txload 255/255, rxload 255/255
  Encapsulation ARPA, loopback not set
  Keepalive not supported
  ARP type: ARPA
  Last clearing of "show interface" counters never
  L3 in Switched:
    ucast: 0 pkts, 0 bytes

我听说您可以counter在界面上使用命令，但我发现 N9K 上不再存在该命令