在 Cisco 第 3 层交换机上配置 VLAN 监控

如何解决在 Cisco 第 3 层交换机上配置 VLAN 监控

我看不到来自我的客户端的任何流量，只监控 ospf 更新：

 sudo tcpdump -i ens20
tcpdump: verbose output suppressed,use -v or -vv for full protocol decode
listening on ens20,link-type EN10MB (Ethernet),capture size 262144 bytes
09:31:02.329509 IP 192.168.202.1 > ospf-all.mcast.net: OSPFv2,Hello,length 56
09:31:11.875678 IP 192.168.202.1 > ospf-all.mcast.net: OSPFv2,length 56
09:31:21.599345 IP 192.168.202.1 > ospf-all.mcast.net: OSPFv2,length 56

我的设置：

interface GigabitEthernet1/1
 no switchport
 ip address 192.168.200.1 255.255.255.0
!

!
# the client is connected here
interface GigabitEthernet1/4
 switchport access vlan 2
 switchport mode access
!
# this is the monitoring port connected to a host running tcp dump
interface GigabitEthernet1/5
 no switchport
 no ip address
!

... 
interface Vlan1
 no ip address
 shutdown
!
interface Vlan2
 ip address 192.168.202.1 255.255.255.0
!

我尝试了以下显示器配置：

!
monitor session 1 source interface Gi1/4
monitor session 1 destination interface Gi1/5

!
monitor session 1 source vlan 2
monitor session 1 destination interface Gi1/5

都只显示 ospf 和 arp 请求。我使用的是 4010 第 3 层交换机。