Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Community Member

Nexus 5k LLDP/DCBX

Hi,

I am currently trying to get a better understanding of DCBX and therefore connected a CNA to my N5k.

There the problems start:

1. It looks like there is a bug in the NX-OS 4.1(3)N2(1) because the commands show lldp interface ethernet x/y and show lldp neighbours

    show the same output.

nex5010-lct(config-if)# show lldp neighbors
LLDP Neighbors

Remote Peers Information on interface Eth2/1
Remote peer's MSAP: length 7 Bytes:
00    00    c9    93    2d    c3    32  

LLDP TLV's
LLDP TLV type:Chassis ID  LLDP TLV Length: 7
LLDP TLV type:Port ID  LLDP TLV Length: 2
LLDP TLV type:Time to Live  LLDP TLV Length: 2
LLDP TLV type:Port Description  LLDP TLV Length: 8
LLDP TLV type:System Name  LLDP TLV Length: 29
LLDP TLV type:System Description  LLDP TLV Length: 45
LLDP TLV type:System capabilities  LLDP TLV Length: 4
LLDP TLV type:LLDP Organizationally Specific  LLDP TLV Length: 60
LLDP TLV type:END of LLDPDU  LLDP TLV Length: 0

nex5010-lct(config-if)# show lldp interface ethernet 2/1
tx_enabled: TRUE
rx_enabled: TRUE
dcbx_enabled: TRUE


Port MAC address:  00:0d:ec:e6:31:b0


Remote Peers Information

Remote peer's MSAP: length 7 Bytes:
00    00    c9    93    2d    c3    32  

LLDP TLV's
LLDP TLV type:Chassis ID  LLDP TLV Length: 7
LLDP TLV type:Port ID  LLDP TLV Length: 2
LLDP TLV type:Time to Live  LLDP TLV Length: 2
LLDP TLV type:Port Description  LLDP TLV Length: 8
LLDP TLV type:System Name  LLDP TLV Length: 29
LLDP TLV type:System Description  LLDP TLV Length: 45
LLDP TLV type:System capabilities  LLDP TLV Length: 4
LLDP TLV type:LLDP Organizationally Specific  LLDP TLV Length: 60
LLDP TLV type:END of LLDPDU  LLDP TLV Length: 0

I was expecting a detailed output like it is available in IOS for LLDP.

Is this a known bug?

2. I tried to workarounf this problem by simply capturing some LLDP packets but there I came to the second problem.

    Wireshark is currently not capable of interpreting organization specific TLV type 127.

   So does anyone know if there is a workaround on this?

Thanks!

1919
Views
0
Helpful
0
Replies
CreatePlease to create content