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Cisco Bug: CSCuq48781 - N9K:Sapporo Donner interfaces would not come up with script shut-no-shut

Last Modified

Mar 17, 2016

Products (1)

  • Cisco Nexus 9000 Series Switches

Known Affected Releases

6.1(2)I3(0.161)

Description (partial)

Symptom:
enie@n3k-view:~/$ ./shutnoshutSap 172.23.102.6 2047
08/20/14 17:15:40 **** Shut / no shut began at 08/20/14 17:15:40 ****
08/20/14 17:15:43 **** Logged into Sapporo ****
08/20/14 17:16:11 **** Links came up fine ****
08/20/14 17:16:12 Issuing interface range shut on Eth1/1-54
08/20/14 17:16:37 Sleeping 20 seconds after interface range shut
08/20/14 17:16:57 Issuing interface range no shut on Eth1/1-54   <------------------down again with script.
08/20/14 17:17:16 **** Link down 0 seconds Eth1/3 Eth1/5 Eth1/7 Eth1/9 Eth1/49 Eth1/50 Eth1/51 Eth1/52 Eth1/53 Eth1/54 ****
08/20/14 17:17:24 **** Link down 1 seconds Eth1/50 Eth1/51 Eth1/52 Eth1/53 ****
08/20/14 17:17:32 **** Link down 2 seconds Eth1/50 Eth1/51 Eth1/52 Eth1/53 ****
08/20/14 17:17:40 **** Link down 3 seconds Eth1/50 Eth1/51 Eth1/52 Eth1/53 ****
08/20/14 17:17:49 **** Link down 4 seconds Eth1/50 Eth1/51 Eth1/52 Eth1/53 ****
08/20/14 17:17:57 **** Link down 5 seconds Eth1/50 Eth1/51 Eth1/52 Eth1/53 ****
08/20/14 17:18:05 **** Link down 6 seconds Eth1/50 Eth1/51 Eth1/52 Eth1/53 ****
08/20/14 17:18:13 **** Link down 7 seconds Eth1/50 Eth1/51 Eth1/52 Eth1/53 ****
08/20/14 17:18:22 **** Link down 8 seconds Eth1/50 Eth1/51 Eth1/52 Eth1/53 ****
08/20/14 17:18:30 **** Link down 9 seconds Eth1/50 Eth1/51 Eth1/52 Eth1/53 ****
08/20/14 17:18:38 **** Link down 10 seconds Eth1/50 Eth1/51 Eth1/52 Eth1/53 ****
08/20/14 17:18:46 **** Link down 11 seconds Eth1/50 Eth1/51 Eth1/52 Eth1/53 ****
08/20/14 17:18:54 **** Link down 12 seconds Eth1/50 Eth1/51 Eth1/52 Eth1/53 ****
08/20/14 17:19:03 **** Link down 13 seconds Eth1/50 Eth1/51 Eth1/52 Eth1/53 ****
08/20/14 17:19:11 **** Link down 14 seconds Eth1/50 Eth1/51 Eth1/52 Eth1/53 ****
enie@n3k-view:~/$
enie@n3k-view:~/$
enie@n3k-view:~/$ exit
logout
Connection to n3k-view closed.
bash-3.00$ telnet 172.23.102.6 2047
Trying 172.23.102.6...
Connected to 172.23.102.6 (172.23.102.6).
Escape character is '^]'.

SapporoT# sh int e1/49-54 b

--------------------------------------------------------------------------------
Ethernet      VLAN    Type Mode   Status  Reason                   Speed     Port
Interface                                                                    Ch #
--------------------------------------------------------------------------------
Eth1/49       1       eth  access up      none                        40G(D) --
Eth1/50       1       eth  access down    Link not connected         auto(D) --
Eth1/51       1       eth  access down    Link not connected         auto(D) --
Eth1/52       1       eth  access down    Link not connected         auto(D) --
Eth1/53       1       eth  access down    Link not connected         auto(D) --
Eth1/54       1       eth  access up      none                        40G(D) --
SapporoT#

Conditions:
Must use script to flap on the copper connection ports(back to back between the sapporo/Donner ports), manually flapping on copper ports on Donner would not reproduce the issue.

Must use copper cables on Donner ports, optical and AOC transceiver would not have such issue with shut and no shut script.
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