Symptoms
The tcpdump command exits immediately with an error:
errbuf ERROR:TMM side closing: Aborted
tcpdump: pcap_loop: TMM side closing: Aborted
Impact
Unable to capture the packets on specific tmm interfaces.
Conditions
Capturing the packets on tmm interfaces.
Workaround
There are two possible workarounds:
-- Start tcpdump on the tmm that actually owns the interface using the
TCPDUMP_ADDR command; for example, using blade1 for 1/0.16, run the command:
TCPDUMP_ADDR=127.1.1.16 tcpdump -w testcap.pcap -s 0 -i 1/0.16
-- Send the TCPDUMP_ADDR command to a specific tmm, which could work from any blade (127.20.<slot>.<tmmnumber+1> (e.g. 127.20.1.1 == slot1/tmm0, 127.20.2.16 == slot2/tmm15):
TCPDUMP_ADDR=127.20.1.16 tcpdump -w testcap.pcap -s 0 -i 1/0.16
