topic Re: Nexus Mgmt port connectivity in DevNet Sandbox

Nexus Mgmt port connectivity

sheeraz.hussain — Wed, 13 May 2020 18:47:37 GMT

I have connected 2 x Nexus 9000 back to back using Mgmt port but see below when i did show cap neigh

SW1(config)# sh cdp ne
Capability Codes: R - Router, T - Trans-Bridge, B - Source-Route-Bridge
S - Switch, H - Host, I - IGMP, r - Repeater,
V - VoIP-Phone, D - Remotely-Managed-Device,
s - Supports-STP-Dispute

Device-ID Local Intrfce Hldtme Capability Platform Port ID
switch(9YV6VWB5Q5E)
Eth1/2 138 R S s N9K-9000v mgmt0

Total entries displayed: 1

Re: Nexus Mgmt port connectivity

balaji.bandi — Wed, 13 May 2020 18:55:49 GMT

how we can prove that interface connected to right ? may be connected interface correct as show in your output.

so to verify, show interface status of both to confirm the correct connection.

not that i was saying you connected wrong, just clarify ?

Re: Nexus Mgmt port connectivity

sheeraz.hussain — Wed, 13 May 2020 19:38:06 GMT

I did verify and that's the only connection i have... so no chance to misread that :)

Re: Nexus Mgmt port connectivity

sheeraz.hussain — Wed, 13 May 2020 19:49:08 GMT

Just to verify, i have shutdown E1/2 and the neighbor is gone, but as soon as i no shut E1/2 the CDP neighbor is back... some is not right and developers need to take a look.

SW1(config-if)# sh cdp ne
Device-ID Local Intrfce Hldtme Capability Platform Port ID

Total entries displayed: 0

SW1(config-if)# int e1/2
SW1(config-if)# no shut
SW1(config-if)# sh cdp ne
switch(9YV6VWB5Q5E)
Eth1/2 127 R S s N9K-9000v mgmt0

Total entries displayed: 1

Re: Nexus Mgmt port connectivity

balaji.bandi — Wed, 13 May 2020 20:02:52 GMT

can you post show version to see any bugs around ?

if possible post the information i was asked for reference.

Re: Nexus Mgmt port connectivity

Sergiu.Daniluk — Thu, 14 May 2020 12:51:27 GMT

Hi @sheeraz.hussain

What do you see on the peer Nexus when you do show cdp neighbor?

Can you enable LLDP feature on both Nexus switches and then show lldp neighbor?

Regards,

Sergiu

Re: Nexus Mgmt port connectivity

sheeraz.hussain — Thu, 14 May 2020 13:40:14 GMT

W1(config-if)# sh cdp ne
switch(9YV6VWB5Q5E)
Eth1/2 127 R S s N9K-9000v mgmt0

I will reserve another slot soon and capture the show version information.

FYI

I don't have that issue when using Eve-ng.

Re: Nexus Mgmt port connectivity

Sergiu.Daniluk — Thu, 14 May 2020 14:15:55 GMT

Well, definitely looks like a bug :-)