just to update after almost 45 minutes now, the link is up between the C9300 and WS-C4506 , here are the details:
On port 47 of C9300:
Switch#sh run int te1/0/47
Building configuration...
Current configuration : 42 bytes
!
interface TenGigabitEthernet1/0/47
end
Switch#sh int te1/0/47
TenGigabitEthernet1/0/47 is up, line protocol is up (connected)
Hardware is Ten Gigabit Ethernet, address is dc77.4c65.efaf (bia dc77.4c65.efaf)
MTU 1500 bytes, BW 1000000 Kbit/sec, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, media type is 100/1000/2.5G/5G/10GBaseTX
input flow-control is on, output flow-control is unsupported
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output 00:00:01, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 4000 bits/sec, 5 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
64341 packets input, 7461290 bytes, 0 no buffer
Received 43766 broadcasts (6730 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 watchdog, 6730 multicast, 0 pause input
0 input packets with dribble condition detected
1051 packets output, 84063 bytes, 0 underruns
Output 0 broadcasts (0 multicasts)
0 output errors, 0 collisions, 2 interface resets
28 unknown protocol drops
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier, 0 pause output
0 output buffer failures, 0 output buffers swapped out
On port 5/29 of WS-C4506:
Building configuration...
Current configuration : 164 bytes
!
interface GigabitEthernet5/29
description Jack 3082
switchport trunk native vlan 87
switchport trunk allowed vlan 87,501,3001,3201
switchport mode trunk
end
s-abc-cde#sh int gi 5/29
GigabitEthernet5/29 is up, line protocol is up (connected)
Hardware is Gigabit Ethernet Port, address is 1cdf.0fc3.c53c (bia 1cdf.0fc3.c53c)
Description: Jack 3082
MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec,
reliability 255/255, txload 1/255, rxload 1/255
Encapsulation ARPA, loopback not set
Keepalive set (10 sec)
Full-duplex, 1000Mb/s, link type is auto, media type is 10/100/1000-TX
input flow-control is off, output flow-control is off
Auto-MDIX on (operational: on)
ARP type: ARPA, ARP Timeout 04:00:00
Last input 00:00:00, output never, output hang never
Last clearing of "show interface" counters never
Input queue: 0/2000/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: fifo
Output queue: 0/40 (size/max)
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 3000 bits/sec, 5 packets/sec
203316 packets input, 17055545 bytes, 0 no buffer
Received 6653 broadcasts (6617 multicasts)
0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored
0 input packets with dribble condition detected
8357634 packets output, 1066554746 bytes, 0 underruns
0 output errors, 0 collisions, 0 interface resets
0 babbles, 0 late collision, 0 deferred
0 lost carrier, 0 no carrier
0 output buffer failures, 0 output buffers swapped out
Note: Nothing changed, configuration was not changed, the cable was not touched and link was not flapped. The link came up on its own.
We have noticed the same in production as well , so is this like a bug?
