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Highlighted
Beginner

Port-channel physical interface not up

Port channel not working between two Nexus 3000 switches.

 

I setup a port channel with two interfaces on each end and assigned the interfaces to the port-channel but only one is showing up.  I have looked at everything on the other interface and everything seems to be setup correctly:  speed and duplex match (gig/full), both ends are in PO4, cable has been put in place connecting them, niether is admin down.......  I'm missing something.

 

here is the out put from one end

CH-SAN1-NX3K# sh int eth1/45
Ethernet1/45 is down (Link not connected)
 Dedicated Interface
  Belongs to Po4
  Hardware: 100/1000/10000 Ethernet, address: e4d3.f1d2.8434 (bia e4d3.f1d2.8434)
  Description: Link to CH-SAN2-NX3K Eth1/45
  MTU 1500 bytes, BW 1000000 Kbit, DLY 10 usec
  reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA
  Port mode is access
  Full-duplex, 1000 Mb/s
  Beacon is turned off
  Input flow-control is off, output flow-control is off
  Switchport monitor is off
  EtherType is 0x8100
  Last link flapped never
  Last clearing of "show interface" counters 00:15:18
  0 interface resets
  30 seconds input rate 0 bits/sec, 0 packets/sec
  30 seconds output rate 0 bits/sec, 0 packets/sec
  Load-Interval #2: 5 minute (300 seconds)
    input rate 0 bps, 0 pps; output rate 0 bps, 0 pps
  RX
    0 unicast packets  0 multicast packets  0 broadcast packets
    0 input packets  0 bytes
    0 jumbo packets  0 storm suppression packets
    0 runts  0 giants  0 CRC  0 no buffer
    0 input error  0 short frame  0 overrun   0 underrun  0 ignored
    0 watchdog  0 bad etype drop  0 bad proto drop  0 if down drop
    0 input with dribble  0 input discard
    0 Rx pause
  TX
    0 unicast packets  0 multicast packets  0 broadcast packets
    0 output packets  0 bytes
    0 jumbo packets
    0 output errors  0 collision  0 deferred  0 late collision
    0 lost carrier  0 no carrier  0 babble 0 output discard
    0 Tx pause

 

also:

 

CH-SAN1-NX3K# sh lacp interface eth1/45
Interface Ethernet1/45 is invalid
  Channel group is 0 port channel is  
  PDUs sent: 0
  PDUs rcvd: 0
  Markers sent: 0
  Markers rcvd: 0
  Marker response sent: 0
  Marker response rcvd: 0
  Unknown packets rcvd: 0
  Illegal packets rcvd: 0
Lag Id: [ [(0, 0-0-0-0-0-0, 0, 0, 0), (0, 0-0-0-0-0-0, 0, 0, 0)] ]
Operational as aggregated link since Thu Jan  1 00:00:00 1970

Local Port: Eth1/45   MAC Address= 0-0-0-0-0-0
  System Identifier=0x8000,0-0-0-0-0-0
  Port Identifier=0x8000,0x0
  Operational key=0
  LACP_Activity=passive
  LACP_Timeout=Long Timeout (30s)
  Synchronization=NOT_IN_SYNC
  Collecting=false
  Distributing=false
  Partner information refresh timeout=Long Timeout (90s)
Actor Admin State=(Ac-0:To-0:Ag-0:Sy-0:Co-0:Di-0:De-0:Ex-0)
Actor Oper State=(Ac-0:To-0:Ag-0:Sy-0:Co-0:Di-0:De-0:Ex-0)
Neighbor: 0x0
  MAC Address= 0-0-0-0-0-0
  System Identifier=0x0,  Port Identifier=0x0,0x0
  Operational key=0
  LACP_Activity=unknown
  LACP_Timeout=Long Timeout (30s)
  Synchronization=NOT_IN_SYNC
  Collecting=false
  Distributing=false
Partner Admin State=(Ac-0:To-0:Ag-0:Sy-0:Co-0:Di-0:De-0:Ex-0)
Partner Oper State=(Ac-0:To-0:Ag-0:Sy-0:Co-0:Di-0:De-0:Ex-0)
Aggregate or Individual(True=1)= 2

6 REPLIES 6
Highlighted
Beginner

Neither end had graceful

Neither end had graceful-convergence disabled so I disabled it at both ends and the interface that had been up went into suspend while the one that was down stayed down.   The I re-enabled it on end and the interface that had been up came back up while the other remained down.

Highlighted
VIP Mentor

Hi Is this a fex or just vpc

Hi Is this a fex or just vpc your setting up ? can you post the run config of the po and member interfaces

Highlighted
Beginner

I'm not sure what you mean by

I'm not sure what you mean by fex or vpc but I have posted the sh runs for the po and member interfaces of both ends below.

 

Switch 1:

CH-SAN1-NX3K# sh run int po4

!Command: show running-config interface port-channel4
!Time: Tue Jun  9 12:47:53 2015

version 6.0(2)U3(1)

interface port-channel4
  description Link to CH-SAN2-NX3K
  switchport access vlan 7
  spanning-tree port type network
  speed 1000

CH-SAN1-NX3K# sh run int eth1/47

!Command: show running-config interface Ethernet1/47
!Time: Tue Jun  9 12:47:58 2015

version 6.0(2)U3(1)

interface Ethernet1/47
  description Link to CH-SAN2-NX3K Eth1/47
  switchport access vlan 7
  spanning-tree port type network
  speed 1000
  channel-group 4 mode active

CH-SAN1-NX3K# sh run int eth1/45

!Command: show running-config interface Ethernet1/45
!Time: Tue Jun  9 12:48:01 2015

version 6.0(2)U3(1)

interface Ethernet1/45
  description Link to CH-SAN2-NX3K Eth1/45
  switchport access vlan 7
  spanning-tree port type network
  speed 1000
  channel-group 4 mode active

 

Switch 2:

CH-SAN2-NX3K# sh run int po4

!Command: show running-config interface port-channel4
!Time: Tue Jun  9 12:48:42 2015

version 6.0(2)U3(1)

interface port-channel4
  description Link to CH-SAN1-NX3K
  switchport access vlan 7
  spanning-tree port type network
  speed 1000

CH-SAN2-NX3K# sh run int eth1/47

!Command: show running-config interface Ethernet1/47
!Time: Tue Jun  9 12:48:57 2015

version 6.0(2)U3(1)

interface Ethernet1/47
  description Link to CH-SAN1-NX3K Eth1/47
  switchport access vlan 7
  spanning-tree port type network
  speed 1000
  channel-group 4 mode active

CH-SAN2-NX3K# sh run int eth1/45

!Command: show running-config interface Ethernet1/45
!Time: Tue Jun  9 12:49:02 2015

version 6.0(2)U3(1)

interface Ethernet1/45
  description Link to CH-SAN1-NX3K Eth1/45
  switchport access vlan 7
  spanning-tree port type network
  speed 1000
  channel-group 4 mode active

 

Highlighted
VIP Mentor

That command below should

That command below should only be on a PO if your connecting to another switch or your vpc peer link to another Nexus , what are you connecting to?

spanning-tree port type network

 

A fex is a fabric extender like a Nexus 2000 series , VPC is a virtual port-channel makes it look like 1 physical PO spread across switches

 

spanning-tree port type network
Highlighted
Beginner

I have Nexus 3000 series at

I have Nexus 3000 series at both ends of the link.

Highlighted
VIP Mentor

Try set it as a vpc as its po

Try set it as a vpc as its po spread across multiple switches

its 1 command under each port-channel vpc 4 see if that brings it up

http://www.cisco.com/c/en/us/products/collateral/switches/nexus-3000-series-switches/white_paper_c11-685753.html#_Toc331451452

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