06-15-2012 07:59 AM - edited 03-01-2019 07:07 AM
I haven't been able bringing up links between N7k and and the new N5K (5548UP) due to errors with UDLD.
Someone else facing same problem ?
regards
Edmund
N5K:
Software
BIOS: version 3.5.0
loader: version N/A
kickstart: version 5.1(3)N2(1a)
system: version 5.1(3)N2(1a)
N7K:
Software
BIOS: version 3.22.0
kickstart: version 5.1(4)
system: version 5.1(4)
Logs at N7K:
2012 Jun 15 14:46:58 swi-svi00A %ETHPORT-5-SPEED: Interface Ethernet1/2, operational speed changed to 10 Gbps
2012 Jun 15 14:46:58 swi-svi00A %ETHPORT-5-IF_DUPLEX: Interface Ethernet1/2, operational duplex mode changed to Full
2012 Jun 15 14:46:58 swi-svi00A %ETHPORT-5-IF_RX_FLOW_CONTROL: Interface Ethernet1/2, operational Receive Flow Control state cha
nged to off
2012 Jun 15 14:46:58 swi-svi00A %ETHPORT-5-IF_TX_FLOW_CONTROL: Interface Ethernet1/2, operational Transmit Flow Control state ch
anged to off
2012 Jun 15 14:46:58 swi-svi00A %ETHPORT-5-SPEED: Interface port-channel14, operational speed changed to 10 Gbps
2012 Jun 15 14:46:58 swi-svi00A %ETHPORT-5-IF_DUPLEX: Interface port-channel14, operational duplex mode changed to Full
2012 Jun 15 14:46:58 swi-svi00A %ETHPORT-5-IF_RX_FLOW_CONTROL: Interface port-channel14, operational Receive Flow Control state
changed to off
2012 Jun 15 14:46:58 swi-svi00A %ETHPORT-5-IF_TX_FLOW_CONTROL: Interface port-channel14, operational Transmit Flow Control state
changed to off
2012 Jun 15 14:47:05 swi-svi00A %UDLD-4-UDLD_PORT_DISABLED: UDLD disabled interface Ethernet1/2, empty echo detected
2012 Jun 15 14:47:16 swi-svi00A %ETH_PORT_CHANNEL-5-PORT_SUSPENDED: Ethernet1/2: Ethernet1/2 is suspended
2012 Jun 15 14:47:16 swi-svi00A %ETHPORT-5-IF_TRUNK_UP: Interface Ethernet1/2, vlan 1,60,100,358,370,380,500-501,505,700-703,710
-713,720-723,730-735,759-762,764-765,767,770,775-778,782-783,787-788,794-796 up
2012 Jun 15 14:47:16 swi-svi00A %ETHPORT-5-IF_TRUNK_UP: Interface Ethernet1/2, vlan 999-1000,1501,2029-2030 up
2012 Jun 15 14:47:16 swi-svi00A %ETHPORT-2-IF_DOWN_ERROR_DISABLED: Interface Ethernet1/2 is down (Error disabled. Reason:UDLD em
pty echo)
2012 Jun 15 14:52:16 swi-svi00A %ETHPORT-2-IF_DOWN_ERROR_DISABLED: Interface Ethernet1/2 is down (Error disabled. Reason:UDLD em
pty echo)
==
swi-svi00A# sh udld ethernet 1/2
Interface Ethernet1/2
--------------------------------
Port enable administrative configuration setting: enabled-aggressive
Port enable operational state: enabled-aggressive
Current bidirectional state: unknown
Current operational state: disable-port - Multiple neighbor not detected
Message interval: 7
Timeout interval: 5
Last pkt send on: 719482, Jun 15 14:47:05 2012
Probe pkt send on: 401784, Jun 15 14:46:59 2012
Echo pkt send on: 461880, Jun 15 14:47:05 2012
Flush pkt send on: 719482, Jun 15 14:47:05 2012
Last pkt recv on: 719134, Jun 15 14:47:05 2012
Probe pkt recv on: 719134, Jun 15 14:47:05 2012
Echo pkt recv on: None.
Flush pkt recv on: None.
Deep pkt inspections done: None.
Mismatched if index found: None.
Deep pkt inspection drops: None.
(Member of port-channel14)
06-17-2012 12:21 AM
Hi
Try to configure UDLD normal mode as it has less false-positive results and please check cables between N7k and N5k.
HTH,
Alex
06-18-2012 08:25 AM
Hi Alex
Reseating the Transceivers and Changing the cables didn't help.
After a reboot of the N5K UDLD works as expected (aggessive at N7K, normal at N5K).
Looks a little bite strange as nothing showed up in the N5K logs.
Edmund
09-06-2012 09:54 AM
You are probably running into bug-id CSCtz00790. (see below)
I had the same issue with UDLD no echo reply over SFP+ cables. The bug is Fixed-In 5.1(3)N2(1a)
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