State description "Unable to resolve IP address from multiple IPs" in NAC End-Systems table.

Robert_Zdzieblo — Mon, 28 Jan 2019 22:45:44 GMT

Hello the HUB ! 🙂

I am getting trouble with MAC to IP resolution on customer's NAC installation.
There are many X440-G2's stacks with 22.4.1.4-patch1-2 EXOS and there is nodealias configured on all access ports.

On some ports IP resolution works fine like this:

code:

Slot-1 PPD03.9 # sh nodealias ports 5:8
Port   MAC Address          Alias ID  Time Last Learned    VID   Protocol  Source IP
-----  -----------------  ----------  -------------------  ----  --------  ---------------
5:8    a4:14:37:5c:b1:6a          38  01-28-2019 13:11:47  4000  ip        192.168.72.82
5:8    a4:14:37:5c:b1:6a          78  01-28-2019 13:11:58  4000  mdns
5:8    a4:14:37:5c:b1:6a         151  01-28-2019 13:56:30  4000  ssdp
5:8    a4:14:37:5c:b1:6a         162  01-28-2019 14:25:33  60    ip        192.168.72.82
5:8    a4:14:37:5c:b1:6a         218  01-28-2019 14:28:44  60    ssdp

While on the others within the same stack it looks like below:

code:

Slot-1 PPD03.10 # sh nodealias ports 5:19
Port   MAC Address          Alias ID  Time Last Learned    VID   Protocol  Source IP
-----  -----------------  ----------  -------------------  ----  --------  ---------------
5:19   a4:14:37:5c:af:48           6  01-28-2019 13:11:00  4000  ip        192.0.0.64
5:19   a4:14:37:5c:af:48          55  01-28-2019 13:11:50  4000  ip        192.168.72.98
5:19   a4:14:37:5c:af:48         122  01-28-2019 13:12:09  4000  mdns
5:19   a4:14:37:5c:af:48         152  01-28-2019 14:00:30  4000  ssdp
5:19   a4:14:37:5c:af:48         209  01-28-2019 14:28:10  60    ip        192.168.72.98
5:19   a4:14:37:5c:af:48         234  01-28-2019 14:29:26  60    ssdp

I have two IPs for the same MAC and I have "Unable to resolve IP address from multiple IPs" state description in End-Systems table.

End-systems are Hikvision IP cameras, 192.0.0.64 is their default IP address, which should disappear after correct IP is set on camera.

Do you think it could be the bug in the camera firmware ? Or should I check something in my config ?

All I have in my stack config regarding nodealias configuration is:

enable nodealias ports x:yy

on all access ports.

By the way:
How the info for nodealias is collected and updated? Each time the device is reautheticated ?
Is there anything like nodealias aging ?

REGARDS, Robert

topic State description "Unable to resolve IP address from multiple IPs" in NAC End-Systems table. in ExtremeSwitching (EXOS/Switch Engine)

State description "Unable to resolve IP address from multiple IPs" in NAC End-Systems table.