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New Member

VPC down/port-channel down

I have a pair of Nexus 5548s in the lab. I'm trying to build a VPC to a C220M3 using a P81E adapter. I cannot get the int port-channel 30/vpc 30 to come up. Any ideas?

B5548# show vpc
Legend:
                (*) - local vPC is down, forwarding via vPC peer-link

vPC domain id                   : 1  
Peer status                     : peer adjacency formed ok     
vPC keep-alive status           : peer is alive                
Configuration consistency status: success
Per-vlan consistency status     : success                      
Type-2 consistency status       : success
vPC role                        : secondary                    
Number of vPCs configured       : 1  
Peer Gateway                    : Enabled
Peer gateway excluded VLANs     : -
Dual-active excluded VLANs      : -
Graceful Consistency Check      : Enabled

vPC Peer-link status
---------------------------------------------------------------------
id   Port   Status Active vlans   
--   ----   ------ --------------------------------------------------
1    Po56   up     1-5,90-93                                                

vPC status
----------------------------------------------------------------------------
id     Port        Status Consistency Reason                     Active vlans
------ ----------- ------ ----------- -------------------------- -----------
30     Po30        down*  Not         Consistency Check Not      -          
                          Applicable  Performed                             

B5548#


A5548# show vpc
Legend:
                (*) - local vPC is down, forwarding via vPC peer-link

vPC domain id                   : 1  
Peer status                     : peer adjacency formed ok     
vPC keep-alive status           : peer is alive                
Configuration consistency status: success
Per-vlan consistency status     : success                      
Type-2 consistency status       : success
vPC role                        : primary                      
Number of vPCs configured       : 1  
Peer Gateway                    : Enabled
Peer gateway excluded VLANs     : -
Dual-active excluded VLANs      : -
Graceful Consistency Check      : Enabled

vPC Peer-link status
---------------------------------------------------------------------
id   Port   Status Active vlans   
--   ----   ------ --------------------------------------------------
1    Po56   up     1-5,90-93                                               

vPC status
----------------------------------------------------------------------------
id     Port        Status Consistency Reason                     Active vlans
------ ----------- ------ ----------- -------------------------- -----------
30     Po30        down*  success     success                    -         

A5548#

A5548# show port-channel sum
Flags:  D - Down        P - Up in port-channel (members)
        I - Individual  H - Hot-standby (LACP only)
        s - Suspended   r - Module-removed
        S - Switched    R - Routed
        U - Up (port-channel)
        M - Not in use. Min-links not met
--------------------------------------------------------------------------------
Group Port-       Type     Protocol  Member Ports
      Channel
--------------------------------------------------------------------------------
1     Po1(SU)     Eth      LACP      Eth1/1(P)    Eth1/2(P)   
30    Po30(SD)    Eth      LACP      Eth1/19(I)  
56    Po56(SU)    Eth      LACP      Eth1/5(P)    Eth1/6(P)   

A5548#

B5548# show port-channel sum
Flags:  D - Down        P - Up in port-channel (members)
        I - Individual  H - Hot-standby (LACP only)
        s - Suspended   r - Module-removed
        S - Switched    R - Routed
        U - Up (port-channel)
        M - Not in use. Min-links not met
--------------------------------------------------------------------------------
Group Port-       Type     Protocol  Member Ports
      Channel
--------------------------------------------------------------------------------
30    Po30(SD)    Eth      LACP      Eth1/19(I)  
56    Po56(SU)    Eth      LACP      Eth1/5(P)    Eth1/6(P)   
B5548#

B5548# show interface port-channel 30
port-channel30 is down (No operational members)
vPC Status: Down, vPC number: 30 [packets forwarded via vPC peer-link]
  Hardware: Port-Channel, address: 547f.ee69.731a (bia 547f.ee69.731a)
  MTU 1500 bytes, BW 10000000 Kbit, DLY 10 usec
  reliability 255/255, txload 1/255, rxload 1/255
  Encapsulation ARPA
  Port mode is trunk
  auto-duplex, 10 Gb/s
  Input flow-control is off, output flow-control is off
  Switchport monitor is off
  EtherType is 0x8100
  Members in this channel: Eth1/19
  Last clearing of "show interface" counters never
  30 seconds input rate 368 bits/sec, 0 packets/sec
  30 seconds output rate 2512 bits/sec, 2 packets/sec
  Load-Interval #2: 5 minute (300 seconds)
    input rate 288 bps, 0 pps; output rate 2.19 Kbps, 2 pps
  RX
    17289 unicast packets  174964 multicast packets  9 broadcast packets
    192262 input packets  51829904 bytes
    0 jumbo packets  0 storm suppression bytes
    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
    23317 unicast packets  10791379 multicast packets  10560530 broadcast packets
    21375226 output packets  1937824969 bytes
    100 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
  0 interface resets

B5548#

2 REPLIES
Cisco Employee

After a Year and some change

After a Year and some change I would've hoped there would be a solution to this. i just encountered the same issue myself. Doesn't make any sense. No mismatch on the VPC parameters. The individual link is up/up but the port-channel won't come up. 

New Member

What is connected to the

What is connected to the other side of the ports? What do you see when you using the following command:

 sho lacp counters interface port-channel 30

 

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