topic DHCP Issue. ICX7750 Version 08.0.95pT203..Help!! in SmartZone and Virtual SmartZone

DHCP Issue. ICX7750 Version 08.0.95pT203..Help!!

PC_JP — Sat, 18 Jan 2025 01:02:45 GMT

Continuing this issue I am reposting the issue posted by someone as i dont get proper reply in comments.

https://community.ruckuswireless.com/t5/ICX-Switches/DHCP-server-icx-7750/m-p/101495#M7109

SW version is 08.0.95pT203

I have created 2 VLANS. For example vlan 100 and vlan 101
For vlan 100 I have used the dhcp pool created on ICX7750 and For Vlan 101 I used the TP-link router to provide DHCP. Both PC+ Mobile working fine with VLAN101 in SSID101 but VLAN 100 has SSID 100 in AP on which only PC get connects.

On checking VSZ6.1.2 it shows in AP clients i can see the DHCP ip received by the PC but the DHCP from the mobile phone reaches to VSZ but it shows 0.0.0.0:: and it donot request the dhcp to switch but incase of PC it does with the same SSID.

On checking via Wireshark:

--On Laptop (Wi-Fi)
--Receives DHCP Pool Address
DHCP Request:
*Option:(50) Requested IP address (192.168.92.4)
DHCP ACK:
*Option:(54) DHCP Server Identifier(192.168.92.1)

--On Mobile (Same Wi-Fi)
--Do not lease IP address, no Request and ACK, Only Discover is seen in Wireshark
*Option:(53) DHCP Message Type (Discover)
DHCP: Discover (1)
*Option:(61) Client Identifier
Client Mac Address:<------>
*OPtion:(12) Hostname
Hostname: <Redmi-12-5G>
*option:(55) Parameter Request list
Length:12
Parameter Request List Item: (1) Subnet mask
Parameter Request List Item: (3) Router
Parameter Request List Item: (6) Domain name Server
Parameter Request List Item: (15) Domain name
Parameter Request List Item: (26) Interface MTU
Parameter Request List Item: (28) Broadcast Address
Parameter Request List Item: (51) IP Address lease time
Parameter Request List Item: (58) Renewal time value
Parameter Request List Item: (43) vendor-specific Information
Parameter Request List Item:(114) DHCP Captive-Portal
Parameter Request List Item: (108) IPv6-Only Preferred

switch configuration:
ip dhcp-server pool vlan100
excluded-address 192.168.92.1
!
excluded-address 192.168.92.100 192.168.92.254
lease 1 0 0
network 192.168.92.0 255.255.255.0
option 3 ip 192.168.92.1
deploy
ip helper-use-responder-ip

interface ve 100
vrf forwarding abc
ip address 192.168.92.1 255.255.255.0
ip helper-address 1 192.168.92.1

also globally i have enabled
ip dhcp-server enable
ip dhcp-server relay-agent-echo enable

Re: DHCP Issue. ICX7750 Version 08.0.95pT203..Help!!

PC_JP — Mon, 20 Jan 2025 08:48:34 GMT

does it mean that the VRF vlan is not able to receive dhcp ?
If so then I have already used the helper address 1 192.168.92.1 and the window client is already receiving ip

What is the possible cause?

Re: DHCP Issue. ICX7750 Version 08.0.95pT203..Help!!

PC_JP — Fri, 24 Jan 2025 07:39:14 GMT

Now i removed the ve 100 from VRF with command "no vrf forwarding abc" and added the ip address the client device (Mobile+PC) now able to connect and receive the IP from the DHCP Pool.

I think with VRF forwarding VLAN 100 the client request didn't reach to the DHCP Pool and the client is not able to receive the IP but i am surprise that why the PC received the IP then.

I added the ip route as below to reach from VRF routing table to global routing table:
#ip route vrf abc 192.168.92.0/24 ve 100
#ip route 192.168.92.0/24 ve 100

Now, a mobile device is connected to AP and receives the DHCP address of 192.168.92.2.

From Switch when i try to ping 192.168.92.2 it pings but it don't ping the gateway 192.168.92.1
Command:
#ping vrf abc 192.168.92.2 -->OK
#ping vrf abc 192.168.92.1 -->OK

#ping 192.168.92.1 OK

Now, I created ve 200 and "vrf forwarding abc" and has the ip of 192.168.93.1/24

I connected a raspberry pi with ip 192.168.93.2/24 in vlan 200

Since there was already a route from global to VRF was already available I tried to ping from Mobile(192.168.92.2) to the raspberry pi(192.168.93.2).
It was not able to get ping although there was already a route via ve 100.

Later i added ip route
#ip route 192.168.93.0/24 ve 200

Now i am able to ping from Mobile(192.168.92.2) to Respberrypi(192.168.93.2) and viceversa

But here also when i try to ping the gateway 192.168.92.1 or 192.168.150.1 then it was not able to ping. why the gateway is not ping?

Is this the isolation in communication between VRF and default VRF?
If so then why client machine get pings but gateway donot?

Re: DHCP Issue. ICX7750 Version 08.0.95pT203..Help!!

PC_JP — Fri, 24 Jan 2025 07:45:02 GMT

in above i did similar like this it pings the clients machine but it donot get pings the gateway like i mentioned above:
https://community.ruckuswireless.com/t5/ICX-Switches/Inter-VRF-routing-on-singular-Router/m-p/77591/page/2