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Not able to see mac addresses on trunk ports in Nexus 3k

Hi,

I have tried with show mac address-table. it is showing only access vlan mac addresses. what is the command that I should use to see the mac addresses that are learnt on trunk interfaces in Nexus devices

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VIP Expert

Not able to see mac addresses on trunk ports in Nexus 3k

Can you try pinging the server than issue command?

show mac address-table interface Po11

or

show mac address-table interface eth1/45

To elimainate any issue with the server, is there a way for you to connected a different server to the same ports and test again?

HTH

View solution in original post

4 REPLIES 4
VIP Expert

Not able to see mac addresses on trunk ports in Nexus 3k

Hi,

Not familiar with 3ks, but how about "sh ip arp vlan xx"?

HTH

Not able to see mac addresses on trunk ports in Nexus 3k

The problem is with the trunk ports(L2 ports). show ip arp gives L3 interface details. Here is my problem, I have connected one citrix netscaler to Eth1/45 and Eth1/46 and created port-chanel 11. Now I want to know the mac address what this switch is learing on Eth1/45, Eth1/46 and Po 11. But mac address-table is showing empty for all these interfaces

switch# Show int Po11

port-channel11 is up

  Hardware: Port-Channel, address: a44c.112b.be74 (bia a44c.112b.be74)

  Description: INFRA:TRUNK:citrix:trunk

  MTU 1500 bytes, BW 20000000 Kbit, DLY 10 usec,

     reliability 255/255, txload 1/255, rxload 1/255

  Encapsulation ARPA

  Port mode is trunk

  full-duplex, 10 Gb/s

  Beacon is turned off

  Input flow-control is off, output flow-control is off

  Switchport monitor is off

  EtherType is 0x8100

  Members in this channel: Eth1/45, Eth1/46

  Last clearing of "show interface" counters never

  30 seconds input rate 2048 bits/sec, 256 bytes/sec, 2 packets/sec

  30 seconds output rate 2712 bits/sec, 339 bytes/sec, 2 packets/sec

  Load-Interval #2: 5 minute (300 seconds)

    input rate 1.93 Kbps, 2 pps; output rate 2.42 Kbps, 2 pps

  RX

    0 unicast packets 1332985 multicast packets 1243 broadcast packets

    1334228 input packets 170700942 bytes

    0 jumbo packets 0 storm suppression packets

    0 giants 3 input error 0 short frame 0 overrun 0 underrun

    0 watchdog 0 if down drop

    0 input with dribble 1248 input discard(includes ACL drops)

    0 Rx pause

  TX

    0 unicast packets 3283039 multicast packets 153 broadcast packets

    3283192 output packets 435263006 bytes

    0 jumbo packets

    0 output errors 0 collision 0 deferred 0 late collision

    0 lost carrier 0 no carrier 0 babble

    0 Tx pause

  1 interface resets

switch#

switch# show run int Po11

!Command: show running-config interface port-channel11

!Time: Fri Jan 4 16:45:52 2013

version 5.0(3)U3(2a)

interface port-channel11

  description INFRA:TRUNK:citrix:trunk

  switchport mode trunk

  switchport trunk allowed vlan 101-102

  logging event port link-status

switch#

switch# show run int eth1/45

!Command: show running-config interface Ethernet1/45

!Time: Fri Jan 4 16:45:32 2013

version 5.0(3)U3(2a)

interface Ethernet1/45

  description INFRA:TRUNK:citrix:10/1

  lacp rate fast

  switchport mode trunk

  switchport trunk allowed vlan 101-102

  logging event port link-status

  channel-group 11 mode active

switch

switch# show mac address-table interface Po11

switch#

switch# show mac address-table interface eth1/45

switch#

switch# sh ip arp vlan 102

Flags: D - Static Adjacencies attached to down interface

IP ARP Table

Total number of entries: 0

Address Age MAC Address Interface

switch#

switch#

VIP Expert

Not able to see mac addresses on trunk ports in Nexus 3k

Can you try pinging the server than issue command?

show mac address-table interface Po11

or

show mac address-table interface eth1/45

To elimainate any issue with the server, is there a way for you to connected a different server to the same ports and test again?

HTH

View solution in original post

Not able to see mac addresses on trunk ports in Nexus 3k

Thanks. I knew but didn't strike in my mind.

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