Re: storage neighbor invisible

francisns · ‎03-28-2018

I have one nexus 5k switch, which is connected to the FI,

in my 5k switch, I have E1/11, fcoe vlan 300, connect to FI portX,

I have fc1/28 connect to FI port y, fc2/3 connect to storage target, now in show cdp neighbor,

I can't find port x and port y for my FI(fabric interconnect). how to find port x and port y?

in my 5k switch do i need to use switch trunk mode off this command for interface fc1/28 and fc2/3? thanks

Kirk J · ‎03-29-2018

Greetings.

FC doesn't have the exact CDP/LLDP type neighbor detection that Ethernet does.

You should be able to run the following on your N5k:

#show topology

The FI's don't run in FC trunk mode by default, so you need to disable that on the n5k side with a :

int fc x/y#switchport trunk mode off

or enable on the FIs.

Thanks,

Kirk...

calopez2 · ‎03-29-2018

1)

From N5K to look at UCS in End Host <NPV> you can use:

f241-02-08-5596-a# show fcns database local detail | i 10.10.10.1 prev 7 next 14

------------------------

VSAN:501 FCID:0x0a0040

------------------------

port-wwn (vendor) :20:4f:00:2a:6a:12:6e:80 (Cisco)

node-wwn :21:f5:00:2a:6a:12:6e:81

class :3

node-ip-addr :10.10.10.1 <==UCS FI MGMT0 IP ADDRESS

ipa :ff ff ff ff ff ff ff ff

fc4-types:fc4_features :npv

symbolic-port-name :UCS-FI-A:fc2/15. <== UCS FI CORRESPONDING FC PORT

symbolic-node-name :UCS-FI-A

port-type :N

port-ip-addr :0.0.0.0

fabric-port-wwn :20:89:54:7f:ee:d3:f8:80

hard-addr :0x000000

permanent-port-wwn (vendor) :20:4f:00:2a:6a:12:6e:80 (Cisco)

connected interface :fc3/9 <==N5K CORRESPONDING FC PORT

switch name (IP address) :f241-02-08-5596-a (10.10.10.2)

2)

You can also find, from UCS FI, the upstream switch and port PWWN by issuing from UCS FI:

show npv internal info external-interface all

Very useful to verify what is the connected upstream NPIV switch and upstream FC fabric port wwn, etc.