10-19-2017 02:40 AM - edited 03-01-2019 01:19 PM
we have a problem connecting a new UCS system to Nexus 5K Switches.
Our main Problem ist that no traffic from UCS System is show on Nexus Switch.
I made a bare metal installation of VMWARE 6.5. on one blade and try to ping the VMNIC 0 IP from outside and the gateway from inside.
I made a mac trace of the mac - vmnic 0 .
i can see the macaddress on the Fabric A, i can see that the VETH connected to an uplink port of the nexus 5K .
with CDP Neigbour i can see the port of the 5K .
But if i want to trace the mac address on the Nexus5K Side.. into the Management VLAN no MAC with 00:25: will appear.
The Port of the Nexus 5K ist of Course Trunk with VLAN Allowed ALL.
Which function can block the traffic between the FabricI Intercnnect and the Nexus ?
Management VLAN is VLAN 11
10-19-2017 04:29 AM
Are you learning the mac address of the ESXi host in the correct VLAN in UCSM?
You need to tag the vNIC in ESXi with the correct management VLAN for it to show in UCSM on VLAN 11.
10-19-2017 04:59 AM
yes .. we are Tagging in ESXi the management Interface with VLAN 11 und
with Show mac address in the fabric interconnect we see the MAC Address into vlan 11 comming ....
that ist not the Problem, i think the Problem is on Nexus Side ..if you make a Show mac address table on the nic that is connected to the fabrc Interface it Shows absolut nothing
10-19-2017 05:28 AM
the config file was not the last Version.
Actually we have only 1 direct link from every Fabric Interconnect to
the Nexus.
Fabric A connect to Nexus 1 with 1 x 10G
Fabric B connect to Nexus 2 with 1 x 10
( we have of Course tryied to shutdown the second connect to avoid spanning tree Problems) also with only one Connection from Fabric A to 1 Nexus .. nothing is to see on the Nexus.
there are no Channel Ports defined in the running config, we want to solve the Basic Problem Prior to creating port channels
10-19-2017 05:31 AM
Can you send outputs of 'show vlan brief' ?
I believe you need to have L2 VLAN 11 defined in the VLAN database in order for Nexus to learn MAC in VLAN 11.
10-19-2017 06:37 AM
We have a solution.
We restarted both fabric interconects 2 times and aktivated und deactivated the Ports on the Cisco Nexus .
After ... restart .. port reset .. restart . port restart .
the mac addesses showed up on the cisco Nexus side.
10-19-2017 05:10 AM
So on Eth1/5, you are missing 'channel-group' config, whereas Eth1/6 has it. Can you correct this and see if it has any impact?
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