How can i use this new 22.4 EXOS feature ?
It sounds perfect to troubleshoot / debug unknown client problems from a remote switch.
I configure this on a EXOS switch in the field and grep the data directly on netsight ubuntu appliance via tcpdump. Unfortunately EXOS encapsulated this traffic into GRE Tunnel.
* Slot-1 12.125.37 # sh mirror
DefaultMirror (Enabled)
Description: Default Mirror Instance, created automatically
Mirror to remote IP: 10.2.0.34 VR : VR-Default
From IP : 10.1.12.125 Ping check: On
Status : Up
Source filter instances used : 1
Port 1:40, all vlans, ingress only
Mirrors defined: 1
Mirrors enabled: 1 (Maximum 4)
HW filter instances used: 1 (Maximum 128)
HW mirror instances used: 1 ingress, 0 egress (Maximum 4 total, 2 egress)
* Slot-1 12.125.38 #09:55:18.931614 IP (tos 0x0, ttl 62, id 0, offset 0, flags [none], proto GRE (47), length 84)
10.1.12.125 > 10.2.0.34: GREv0, Flags [none], length 64
gre-proto-0x88be
09:55:18.931642 IP (tos 0xc0, ttl 64, id 58906, offset 0, flags [none], proto ICMP (1), length 112)
10.2.0.34 > 10.1.12.125: ICMP 10.2.0.34 protocol 47 unreachable, length 92
IP (tos 0x0, ttl 62, id 0, offset 0, flags [none], proto GRE (47), length 84)
10.1.12.125 > 10.2.0.34: GREv0, Flags [none], length 64
gre-proto-0x88be
09:55:18.947159 IP (tos 0x0, ttl 62, id 0, offset 0, flags [none], proto GRE (47), length 84)
10.1.12.125 > 10.2.0.34: GREv0, Flags [none], length 64
gre-proto-0x88be
Is there a (easy) way to look into this GRE Tunnel - prefered with tcpdump ? On Netsight ?
I am looking for a fast troubleshooting way without any graphical GUI and without needing Analytics License - just for analysing packets with tcpdump (but remotely from a EXOS Switch)
Regards,
Matthias