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Forum Discussion
M4300-16X Port Mirroring
So I have a single M4300-16X that I'm trying to configure for traffic analysis. Looking at the CLI documentation, it appears straightforward enough. The current config is nothing special. Default VLAN 1 and whatnot.
Below is the outcome when I tried to mirror VLAN 1 traffic over to the available port 15 on the switch. Any ideas as to why this wouldn't work? Port 15 is a member of the default VLAN 1 and that's it.
User:admin Password:************** (M4300-16X) >enable (M4300-16X) #config (M4300-16X) (Config)#monitor session 1 mode (M4300-16X) (Config)#monitor session 1 source vlan 1 (M4300-16X) (Config)#monitor session 1 destination interface 1/0/15 Failed to configure the mirroring session. Please refer system log for more information. (M4300-16X) (Config)#
2 Replies
And here is the current config up until the point I attempted the port mirroring.
!Current Configuration: ! !System Description "M4300-16X ProSAFE 16-port 10GBASE-T with PoE/PoE+ support, 12.0.9.3, B1.0.0.15" !System Software Version "12.0.9.3" !System Up Time "0 days 20 hrs 9 mins 37 secs" !Additional Packages QOS,Multicast,IPv6,IPv6 Management,Stacking,Routing !Current SNTP Synchronized Time: Mar 19 13:14:23 2021 UTC ! vlan database vlan routing 1 1 exit configure stack member 1 11 exit username "admin" password xxxxxxxxxxx level 15 encrypted username snmpv3 authentication "admin" md5 line console serial timeout 30 exit line telnet exit line ssh exit snmp-server sysname "XXXXXXX" snmp-server location "XXXXXXX" snmp-server contact "XXXXXXX" ! interface vlan 1 routing ip address dhcp exit router rip exit router ospf exit ipv6 router ospf exit exit
...anyone???
The one caveat I think _could_ be affecting things is that the switch has been up for almost 8 months now. And has run into a known bug where the web GUI, SSH access, etc. has been knocked off. The only apparent solution to that bug is rebooting the switch itself. Although a core production switch makes that workaround pretty clumsy at best. I hope to do that this Sunday and will see if I then can add this mirrored port after the reboot.
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