01-07-2014 06:58 PM - edited 03-07-2019 05:25 PM
Having an issue on 2 new 3048's where mac addresses from servers connected to the TOR are not being leanred by the NX 3048.
Software Version:
BIOS: version 1.2.0
loader: version N/A
kickstart: version 5.0(3)U3(2a)
system: version 5.0(3)U3(2a)
Example "show interface status":
--------------------------------------------------------------------------------
Port Name Status Vlan Duplex Speed Type
--------------------------------------------------------------------------------
Eth1/1 -- connected 462 full 1000 1gb
Eth1/2 -- connected 462 full 1000 1gb
Eth1/3 -- connected 462 full 1000 1gb
Eth1/4 -- connected 462 full 1000 1gb
Example MAC's learned on Po1 channel (which is using (2) 10GB links to a Nexus 7010 pair in typical fashion, and using vPC)
Legend:
* - primary entry, G - Gateway MAC, (R) - Routed MAC, O - Overlay MAC
age - seconds since first seen,+ - primary entry using vPC Peer-Link
VLAN MAC Address Type age Secure NTFY Ports
---------+-----------------+--------+---------+------+----+------------------
* 582 0000.0c9f.f065 dynamic 30140 F F Po1
* 582 0000.0c9f.f066 dynamic 30140 F F Po1
* 582 0001.d7e6.ba48 dynamic 30140 F F Po1
* 582 0001.d7e7.dc47 dynamic 30140 F F Po1
* 582 0017.0f7b.6400 dynamic 30140 F F Po1
* 582 001d.4675.8c00 dynamic 30140 F F Po1
* 582 001e.68ee.d15a dynamic 30080 F F Po1
* 582 001e.68ee.d5c4 dynamic 30020 F F Po1
* 582 001e.68ee.d6fe dynamic 30090 F F Po1
... but when trying to find anything locally on the ports assigned, it finds nothing:
dc1-34x-1-43# sh mac address-table | in Eth1/
dc1-34x-1-43#
The Vlans are added properly (and even used 'no shut' when adding them):
dc1-34x-1-43# sh vlan
462 10.xxx.150.0/25 active Po1, Eth1/1, Eth1/2, Eth1/3
Eth1/4, Eth1/5, Eth1/6, Eth1/7
Eth1/8, Eth1/9, Eth1/10, Eth1/11
Port assignments are correct:
dc1-34x-1-43# sh run int Eth1/3
interface Ethernet1/3
no cdp enable
switchport access vlan 462
spanning-tree port type edge
negotiate auto
no snmp trap link-status
no shutdown
These features are enabled:
version 5.0(3)U3(2a)
no feature telnet
no telnet server enable
feature tacacs+
feature udld
feature interface-vlan
feature lacp
feature lldp
and the mac address time out is set to 14410:
mac address-table aging-time 14410
Servers are properly connected (confirmed) and servers show MAC address when queried fomr the serial port.
Some informaiton to know:
a) This is a rack moved from one Data Center to another, but the TORs were replaced with Nexus 3048's (from another vendor model)
b) These servers are bare metal, no OS installed (which is why I need the MACs)
c) Both TORs show the same exact symptoms and have the exact same confgi (minus IP, etc)
d) The copp policies are exactly the same as other (working) TORs - and I see no filtering for macs (L2) anywhere
e) There are no ACL's configured for blocking this type traffic
Is there something I'm missing?
Is there a command(s) I can run to see if the TOR gets ANY MAC fomr any edge port thats an access vlan?
Is there a command to determine if I am indeed getting blocked by an ACL or filter? (and yes I know "sh ip access-list")
Anything else a CCIE level person can determine (with knowledge of NX-OS)?
thanks,
Chris
03-17-2020 11:47 PM
Did you ever found the root cause of this issue? I'm currently facing a similar issue on an Nexus 34180YC connected to a ASR1001.
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