Cloud Managed Networks

Good afternoon,

The AP has a VLAN and a network segment for their administration, in this there are only them and a Windows DHCP server, but when connecting an AP or a PC to that vlan wired in the Switches they connect to a DHCP server that is providing the Aruba AP's, but I have never configured that additionally, the DHCP server is the network 172.31.98.0/23 which is by default one that brings the Aruba APs, the problem is that it should not generate this segment on the network LAN.

I have already carried out tests with different PCs and it is the same for all of them, when sending the DHCP request this is answered by a random AP on the network, but they always end up on the 172.31.98.0/23 network, this I know because I have followed up on the ARP table of the PC in which it finds the DHCP server that has the IP 172.31.98.1 with the MAC of an Aruba AP.

------------------------------
Bryan Cruz
------------------------------

Hi,

On your wireless vlan settings, it seems you have selected virtual controller managed instead of network assigned. In that case, the IAP will act as DHCP server and provide IPs in the range 172.31.98.X

You need to change to network assigned and either specify the vlan or use default..



------------------------------
Ayman Mukaddam
------------------------------

Original Message:
Sent: Feb 03, 2021 11:26 AM
From: Bryan Cruz
Subject: Problem DHCP AP´s in LAN WIRED

Good afternoon,

The AP has a VLAN and a network segment for their administration, in this there are only them and a Windows DHCP server, but when connecting an AP or a PC to that vlan wired in the Switches they connect to a DHCP server that is providing the Aruba AP's, but I have never configured that additionally, the DHCP server is the network 172.31.98.0/23 which is by default one that brings the Aruba APs, the problem is that it should not generate this segment on the network LAN.

I have already carried out tests with different PCs and it is the same for all of them, when sending the DHCP request this is answered by a random AP on the network, but they always end up on the 172.31.98.0/23 network, this I know because I have followed up on the ARP table of the PC in which it finds the DHCP server that has the IP 172.31.98.1 with the MAC of an Aruba AP.

------------------------------
Bryan Cruz
------------------------------

Hi there,
I am attaching you a capture that I made of wireshark, it is very strange that I see all the APs are responding at the same time ARP from IP 172.31.98.1

https://drive.google.com/file/d/1gJ9DLrAYovNhyzNlTySDOgO33fiA-x5N/view?usp=sharing

The capture was made in the ethernet interface of my PC

Do you think that with the configuration you indicate it can be solved?

Postdata: Management ARUBA CENTRAL

------------------------------
Bryan Cruz
------------------------------

Original Message:
Sent: Feb 03, 2021 01:55 PM
From: Ayman Mukaddam
Subject: Problem DHCP AP´s in LAN WIRED

Hi,

On your wireless vlan settings, it seems you have selected virtual controller managed instead of network assigned. In that case, the IAP will act as DHCP server and provide IPs in the range 172.31.98.X

You need to change to network assigned and either specify the vlan or use default..



------------------------------
Ayman Mukaddam

Original Message:
Sent: Feb 03, 2021 11:26 AM
From: Bryan Cruz
Subject: Problem DHCP AP´s in LAN WIRED

Good afternoon,

The AP has a VLAN and a network segment for their administration, in this there are only them and a Windows DHCP server, but when connecting an AP or a PC to that vlan wired in the Switches they connect to a DHCP server that is providing the Aruba AP's, but I have never configured that additionally, the DHCP server is the network 172.31.98.0/23 which is by default one that brings the Aruba APs, the problem is that it should not generate this segment on the network LAN.

I have already carried out tests with different PCs and it is the same for all of them, when sending the DHCP request this is answered by a random AP on the network, but they always end up on the 172.31.98.0/23 network, this I know because I have followed up on the ARP table of the PC in which it finds the DHCP server that has the IP 172.31.98.1 with the MAC of an Aruba AP.

------------------------------
Bryan Cruz
------------------------------

Can you just explain your setup? How are things connected and what are you getting?

172.31.98.X is usually for the virtual controller assigned range (when the IAP is acting as DHCP server)

------------------------------
Ayman Mukaddam
------------------------------

Original Message:
Sent: Feb 03, 2021 02:16 PM
From: Bryan Cruz
Subject: Problem DHCP AP´s in LAN WIRED

Hi there,
I am attaching you a capture that I made of wireshark, it is very strange that I see all the APs are responding at the same time ARP from IP 172.31.98.1

https://drive.google.com/file/d/1gJ9DLrAYovNhyzNlTySDOgO33fiA-x5N/view?usp=sharing

The capture was made in the ethernet interface of my PC

Do you think that with the configuration you indicate it can be solved?

Postdata: Management ARUBA CENTRAL

------------------------------
Bryan Cruz

Original Message:
Sent: Feb 03, 2021 01:55 PM
From: Ayman Mukaddam
Subject: Problem DHCP AP´s in LAN WIRED

Hi,

On your wireless vlan settings, it seems you have selected virtual controller managed instead of network assigned. In that case, the IAP will act as DHCP server and provide IPs in the range 172.31.98.X

You need to change to network assigned and either specify the vlan or use default..



------------------------------
Ayman Mukaddam

Original Message:
Sent: Feb 03, 2021 11:26 AM
From: Bryan Cruz
Subject: Problem DHCP AP´s in LAN WIRED

Good afternoon,

The AP has a VLAN and a network segment for their administration, in this there are only them and a Windows DHCP server, but when connecting an AP or a PC to that vlan wired in the Switches they connect to a DHCP server that is providing the Aruba AP's, but I have never configured that additionally, the DHCP server is the network 172.31.98.0/23 which is by default one that brings the Aruba APs, the problem is that it should not generate this segment on the network LAN.

I have already carried out tests with different PCs and it is the same for all of them, when sending the DHCP request this is answered by a random AP on the network, but they always end up on the 172.31.98.0/23 network, this I know because I have followed up on the ARP table of the PC in which it finds the DHCP server that has the IP 172.31.98.1 with the MAC of an Aruba AP.

------------------------------
Bryan Cruz
------------------------------

Hi there
Currently it is managed from ARUBA CENTRAL with 4 SSIDs each with a DHCP that is given by a Windows Server.

I have the APs connected to the network with a trunk port with the navita management vlan and the rest as tagged.

In the management VLAN there is a Windows DHCP server, nobody else.

When connecting a PC via cable to the SW with the port in the management VLAN of the APs, the PC when making the DHCP request is answered by the APs as can be seen in the packet capture. additionally all are responding ARP to IP 172.31.98.1

------------------------------
Bryan Cruz
------------------------------

Original Message:
Sent: Feb 03, 2021 02:19 PM
From: Ayman Mukaddam
Subject: Problem DHCP AP´s in LAN WIRED

Can you just explain your setup? How are things connected and what are you getting?

172.31.98.X is usually for the virtual controller assigned range (when the IAP is acting as DHCP server)

------------------------------
Ayman Mukaddam

Original Message:
Sent: Feb 03, 2021 02:16 PM
From: Bryan Cruz
Subject: Problem DHCP AP´s in LAN WIRED

Hi there,
I am attaching you a capture that I made of wireshark, it is very strange that I see all the APs are responding at the same time ARP from IP 172.31.98.1

https://drive.google.com/file/d/1gJ9DLrAYovNhyzNlTySDOgO33fiA-x5N/view?usp=sharing

The capture was made in the ethernet interface of my PC

Do you think that with the configuration you indicate it can be solved?

Postdata: Management ARUBA CENTRAL

------------------------------
Bryan Cruz

Original Message:
Sent: Feb 03, 2021 01:55 PM
From: Ayman Mukaddam
Subject: Problem DHCP AP´s in LAN WIRED

Hi,

On your wireless vlan settings, it seems you have selected virtual controller managed instead of network assigned. In that case, the IAP will act as DHCP server and provide IPs in the range 172.31.98.X

You need to change to network assigned and either specify the vlan or use default..



------------------------------
Ayman Mukaddam

Original Message:
Sent: Feb 03, 2021 11:26 AM
From: Bryan Cruz
Subject: Problem DHCP AP´s in LAN WIRED

Good afternoon,

The AP has a VLAN and a network segment for their administration, in this there are only them and a Windows DHCP server, but when connecting an AP or a PC to that vlan wired in the Switches they connect to a DHCP server that is providing the Aruba AP's, but I have never configured that additionally, the DHCP server is the network 172.31.98.0/23 which is by default one that brings the Aruba APs, the problem is that it should not generate this segment on the network LAN.

I have already carried out tests with different PCs and it is the same for all of them, when sending the DHCP request this is answered by a random AP on the network, but they always end up on the 172.31.98.0/23 network, this I know because I have followed up on the ARP table of the PC in which it finds the DHCP server that has the IP 172.31.98.1 with the MAC of an Aruba AP.

------------------------------
Bryan Cruz
------------------------------

Check your default_wired_port_profile or the profile that you are using if any..
It looks that it is set to Instant AP assigned. Can you share a screenshot?



------------------------------
Ayman Mukaddam
------------------------------

Original Message:
Sent: Feb 03, 2021 02:36 PM
From: Bryan Cruz
Subject: Problem DHCP AP´s in LAN WIRED

Hi there
Currently it is managed from ARUBA CENTRAL with 4 SSIDs each with a DHCP that is given by a Windows Server.

I have the APs connected to the network with a trunk port with the navita management vlan and the rest as tagged.

In the management VLAN there is a Windows DHCP server, nobody else.

When connecting a PC via cable to the SW with the port in the management VLAN of the APs, the PC when making the DHCP request is answered by the APs as can be seen in the packet capture. additionally all are responding ARP to IP 172.31.98.1

------------------------------
Bryan Cruz

Original Message:
Sent: Feb 03, 2021 02:19 PM
From: Ayman Mukaddam
Subject: Problem DHCP AP´s in LAN WIRED

Can you just explain your setup? How are things connected and what are you getting?

172.31.98.X is usually for the virtual controller assigned range (when the IAP is acting as DHCP server)

------------------------------
Ayman Mukaddam

Original Message:
Sent: Feb 03, 2021 02:16 PM
From: Bryan Cruz
Subject: Problem DHCP AP´s in LAN WIRED

Hi there,
I am attaching you a capture that I made of wireshark, it is very strange that I see all the APs are responding at the same time ARP from IP 172.31.98.1

https://drive.google.com/file/d/1gJ9DLrAYovNhyzNlTySDOgO33fiA-x5N/view?usp=sharing

The capture was made in the ethernet interface of my PC

Do you think that with the configuration you indicate it can be solved?

Postdata: Management ARUBA CENTRAL

------------------------------
Bryan Cruz

Original Message:
Sent: Feb 03, 2021 01:55 PM
From: Ayman Mukaddam
Subject: Problem DHCP AP´s in LAN WIRED

Hi,

On your wireless vlan settings, it seems you have selected virtual controller managed instead of network assigned. In that case, the IAP will act as DHCP server and provide IPs in the range 172.31.98.X

You need to change to network assigned and either specify the vlan or use default..



------------------------------
Ayman Mukaddam

Original Message:
Sent: Feb 03, 2021 11:26 AM
From: Bryan Cruz
Subject: Problem DHCP AP´s in LAN WIRED

Good afternoon,

The AP has a VLAN and a network segment for their administration, in this there are only them and a Windows DHCP server, but when connecting an AP or a PC to that vlan wired in the Switches they connect to a DHCP server that is providing the Aruba AP's, but I have never configured that additionally, the DHCP server is the network 172.31.98.0/23 which is by default one that brings the Aruba APs, the problem is that it should not generate this segment on the network LAN.

I have already carried out tests with different PCs and it is the same for all of them, when sending the DHCP request this is answered by a random AP on the network, but they always end up on the 172.31.98.0/23 network, this I know because I have followed up on the ARP table of the PC in which it finds the DHCP server that has the IP 172.31.98.1 with the MAC of an Aruba AP.

------------------------------
Bryan Cruz
------------------------------

hi, 

my setup is:


------------------------------
Bryan Cruz
------------------------------

Original Message:
Sent: Feb 03, 2021 02:46 PM
From: Ayman Mukaddam
Subject: Problem DHCP AP´s in LAN WIRED

Check your default_wired_port_profile or the profile that you are using if any..
It looks that it is set to Instant AP assigned. Can you share a screenshot?



------------------------------
Ayman Mukaddam

Original Message:
Sent: Feb 03, 2021 02:36 PM
From: Bryan Cruz
Subject: Problem DHCP AP´s in LAN WIRED

Hi there
Currently it is managed from ARUBA CENTRAL with 4 SSIDs each with a DHCP that is given by a Windows Server.

I have the APs connected to the network with a trunk port with the navita management vlan and the rest as tagged.

In the management VLAN there is a Windows DHCP server, nobody else.

When connecting a PC via cable to the SW with the port in the management VLAN of the APs, the PC when making the DHCP request is answered by the APs as can be seen in the packet capture. additionally all are responding ARP to IP 172.31.98.1

------------------------------
Bryan Cruz

Original Message:
Sent: Feb 03, 2021 02:19 PM
From: Ayman Mukaddam
Subject: Problem DHCP AP´s in LAN WIRED

Can you just explain your setup? How are things connected and what are you getting?

172.31.98.X is usually for the virtual controller assigned range (when the IAP is acting as DHCP server)

------------------------------
Ayman Mukaddam

Original Message:
Sent: Feb 03, 2021 02:16 PM
From: Bryan Cruz
Subject: Problem DHCP AP´s in LAN WIRED

Hi there,
I am attaching you a capture that I made of wireshark, it is very strange that I see all the APs are responding at the same time ARP from IP 172.31.98.1

https://drive.google.com/file/d/1gJ9DLrAYovNhyzNlTySDOgO33fiA-x5N/view?usp=sharing

The capture was made in the ethernet interface of my PC

Do you think that with the configuration you indicate it can be solved?

Postdata: Management ARUBA CENTRAL

------------------------------
Bryan Cruz

Original Message:
Sent: Feb 03, 2021 01:55 PM
From: Ayman Mukaddam
Subject: Problem DHCP AP´s in LAN WIRED

Hi,

On your wireless vlan settings, it seems you have selected virtual controller managed instead of network assigned. In that case, the IAP will act as DHCP server and provide IPs in the range 172.31.98.X

You need to change to network assigned and either specify the vlan or use default..



------------------------------
Ayman Mukaddam

Original Message:
Sent: Feb 03, 2021 11:26 AM
From: Bryan Cruz
Subject: Problem DHCP AP´s in LAN WIRED

Good afternoon,

The AP has a VLAN and a network segment for their administration, in this there are only them and a Windows DHCP server, but when connecting an AP or a PC to that vlan wired in the Switches they connect to a DHCP server that is providing the Aruba AP's, but I have never configured that additionally, the DHCP server is the network 172.31.98.0/23 which is by default one that brings the Aruba APs, the problem is that it should not generate this segment on the network LAN.

I have already carried out tests with different PCs and it is the same for all of them, when sending the DHCP request this is answered by a random AP on the network, but they always end up on the 172.31.98.0/23 network, this I know because I have followed up on the ARP table of the PC in which it finds the DHCP server that has the IP 172.31.98.1 with the MAC of an Aruba AP.

------------------------------
Bryan Cruz
------------------------------