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No DHCP issued to clients connected to wireless AP.

  • 30 July 2018
  • 4 replies

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  • 4 replies
I have replaced an Enterasys switch with a new X440G2-48p everything works fine except when devices connect to a Ruckus AP attached to the switch the devices do not obtain IP addresses.

Any help greatly appreciated.

4 replies

Userlevel 4
Baz, can you show the configuration of the ports connected to the AP both pre and post-switch swap? On the newer switch "sho port x info detail" where x is the port should provide everything. Also, where is DHCP being delivered from? I'm assuming that the ruckus and DHCP were working in the prior environment (not new to the environment)?

Hi Ric

Thanks for the reply the AP was working fine prior to changing the switch, DHCP comes via our DHCP server in our DC downstairs, I have taken the AP off the ceiling and plugged it into a spare port at my desk and it works fine when clients connect they get an IP address without issue (different switch) Unfortunately I do not have the config for the Enterasys as it has been utilized elsewhere after wiping it.

Port detail below AP is set up on the DATA vlan

# show port 47 info detail
Port: 47
Virtual-router: VR-Default
Type: UTP
Redundant Type: NONE
Random Early drop: Unsupported
Admin state: Enabled
Copper Medium Configuration: auto-speed sensing auto-duplex auto-polarity on
Fiber Medium Configuration: auto-speed sensing auto-duplex
Link State: Active, 1Gbps, full-duplex
Link Ups: 11 Last: Tue Jul 31 00:30:00 2018
Link Downs: 10 Last: Tue Jul 31 00:29:57 2018

VLAN cfg:
Name: DATA, Internal Tag = 1, MAC-limit = No-limit, Virtual router: VR-Default
Name: VOICE, 802.1Q Tag = 4, MAC-limit = No-limit, Virtual router: VR-Default
Port-specific VLAN ID: 4
STP cfg:

Name: DATA Protocol: ANY Match all protocols.
Trunking: Load sharing is not enabled.

EDP: Enabled

EEE: Disabled
ELSM: Disabled
Ethernet OAM: Disabled
Learning: Enabled
Unicast Flooding: Enabled
Multicast Flooding: Enabled
Broadcast Flooding: Enabled
Jumbo: Disabled
Flow Control: Rx-Pause: Enabled Tx-Pause: Disabled
Priority Flow Control: Disabled
Reflective Relay: Disabled
Link up/down SNMP trap filter setting: Enabled
Egress Port Rate: No-limit
Broadcast Rate: No-limit
Multicast Rate: No-limit
Unknown Dest Mac Rate: No-limit
QoS Profile: None configured
Ingress Rate Shaping : Unsupported
Ingress IPTOS Examination: Disabled
Ingress 802.1p Examination: Enabled
Ingress 802.1p Inner Exam: Disabled
Ingress 802.1p Priority: 0
Egress IPTOS Replacement: Disabled
Egress 802.1p Replacement: Disabled
NetLogin: Disabled
NetLogin port mode: Port based VLANs
Smart redundancy: Enabled
Software redundant port: Disabled
IPFIX: Disabled Metering: Ingress, All Packets, All Traffic
IPv4 Flow Key Mask: SIP: DIP:
IPv6 Flow Key Mask: SIP: ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff
DIP: ffff:ffff:ffff:ffff:ffff:ffff:ffff:ffff

auto-polarity: Enabled
Preferred medium: Fiber
Shared packet buffer: default
VMAN CEP egress filtering: Disabled
Isolation: Off
PTP Configured: Disabled
Time-Stamping Mode: None

Dynamic VLAN Uplink: Disabled
VM Tracking Dynamic VLANs: Disabled
Hi anyone any idea at all why this is happening?
Userlevel 7
Could you please connect the client again to the SSID and then run the following on the switch....

show port 47 vlan
show fdb | i 47

Also please provide the AP and client MAC.