Microsoft
Software
Hardware
Network
Question : Cisco Layer 2 trace
Hi,
Can anyone let me know what would stop a layer 2 traceroute working between various Cisco devices (primarily a combination of 4500 and 2960 switches). Whenever i try a trace from a 2960 (distribution layer) through a 4500 (core layer) i receive an error message "Unable to send a l2trace request to X.X.X.X. Timed out
Layer2 trace aborted."
Each 2960 is fed from two 4500s and all 4500s are redundantly connected to each other. At the time of carrying out these tests there were no network issues.
Thanks,
Phil
Answer : Cisco Layer 2 trace
Check if ip proxy-arp is disabled on any of the transit interfaces.
Random Solutions
Setting up a Cisco lan-to-lan bridge
Cisco Unified Call Manger 7.0 - Activatiing All Services
Ping with IPX
How can I get past a 0x0000232a rcode_server_failure?
HP procurve and IAS
Windows XP Pro unable to browse lan
Slowness of Weblogic server
Connect Ethernet drive directly to Server Lan port
Cleaned root kit, Internet access broken (network ok, DNS resolution OK, internet ping ok)
Recording Cisco IVR Prompts