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тАО04-08-2015 01:09 AM - edited тАО04-08-2015 03:54 AM
тАО04-08-2015 01:09 AM - edited тАО04-08-2015 03:54 AM
Problem with AP Roaming on HP 5120
Hello, I'm having trouble in my warehouse. I have 3 ap that broadcast the same SSID. Therefore I expect my devices to roam between APs. There is no controller managing the APs, they're all stand-alone.
They are regularly disconnected. And I have theese messages. There's no loop whatsoever. I believe there is an arp command that can help me but I can't figure which one.
%Apr 8 00:55:47:352 2015 SYSNAME ARP/5/ARP_DUPLICATE_IPADDR_DETECT: Detected an IP address conflict. The device with MAC address 0045-7089-8f75 connected to GigabitEthernet1/0/10 in VLAN 31 and the device with MAC address 0045-7089-8f75 connected to GigabitEthernet1/0/7 in VLAN 31 are using the same IP address 10.31.148.20.
%Apr 8 00:48:36:856 2015 SYSNAME ARP/5/ARP_DUPLICATE_IPADDR_DETECT: Detected an IP address conflict. The device with MAC address 0045-7038-f097 connected to GigabitEthernet1/0/9 in VLAN 31 and the device with MAC address 0045-7038-f097 connected to GigabitEthernet1/0/10 in VLAN 31 are using the same IP address 10.31.148.23.
My 3 APs are on port 1/0/7 1/0/9 and 1/0/10. Devices get their addresses with an 8-day long DHCP lease.
I already tried, without success : "mac-address mac-roaming enable"
Any help would be very appreciated.
Thanks in advance.
P.S.
interface GigabitEthernet1/0/7
description WIFI
port access vlan 31
loopback-detection enable
loopback-detection action shutdown
broadcast-suppression 20
multicast-suppression 20
poe enable
stp edged-port enable
undo lldp enable
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тАО04-16-2015 03:15 AM
тАО04-16-2015 03:15 AM
Re: Problem with AP Roaming on HP 5120
Can you run try this command:
mac-address mac-move fast-update
This will trigger the ARP table to be updated at the moment the Layer2 MAC is learned on a different port,
best regards,Peter
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тАО04-16-2015 08:27 AM
тАО04-16-2015 08:27 AM
Re: Problem with AP Roaming on HP 5120
Hi, thank for your reply,
Unfortunately this command is not present on the HP5120 Version 5.20.99, Release 2220P02 Bootrom 618 (do I need an upgrade ?)
I have this when i type "mac-address ?"
[TOURLAVILLE_TA] mac-address ?
blackhole Blackhole entry, without aging, can be added/deleted, saved to the configuration file
destination-hit Hit destination MAC addresses
dynamic Dynamic entry, with aging, can be added/deleted, lost after reset
information Configure MAC information function
mac-learning Hardware MAC address learning
mac-roaming Configure mac roaming
multicast Multicast entry, without aging, can be added/deleted, saved to the configuration file
static Static entry, without aging, can be added/deleted, saved to the configuration file
station-move station-move
timer Configure timer
Hence the available commands that could look useful :
mac-address station-move quick-notify enable
mac-address mac-roaming enable
mac-address mac-learning disable
mac-address destination-hit disable
mac-address the rest is pretty self explanatory
When an interface is selected the following commands are available :
[TOURLAVILLE_TA-if-range] mac-address ?
dynamic Dynamic entry, with aging, can be added/deleted, lost after reset
information Configure MAC information function
mac-learning Hardware MAC address learning
multicast Multicast entry, without aging, can be added/deleted, saved to the configuration file
static Static entry, without aging, can be added/deleted, saved to the configuration file
I can't see anything useful by myself within theese choices...
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тАО01-06-2016 01:17 AM
тАО01-06-2016 01:17 AM
Re: Problem with AP Roaming on HP 5120
Hello,
We are experiancing the exact same issue's on the same switch. Have you found an solution for it?
Kind Regards,
Bastiaan
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тАО05-31-2016 02:03 PM
тАО05-31-2016 02:03 PM
Re: Problem with AP Roaming on HP 5120
I have exactly the same issues. 1 SSID broadcasted across 3 Apple Extreme AP with the base station in bridge mode connected to the HP with the wire cable. When I connect the second AP to the HP A5210 I get exactly the same error message as described here "ARP/5/ARP_DUPLICATE_IPADDR_DETECT: Detected an IP address conflict". Tried also mac-address station-move quick-notify enable but this does not address the issue. The solution from now is to leave the 2 AP to connect to the base station using the wifi ac but I would prefer to use a wire cable to connect all of them to the HP switch.
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тАО06-01-2016 06:04 AM
тАО06-01-2016 06:04 AM
Re: Problem with AP Roaming on HP 5120
Hello !
What is the version of the firmware?
ATP FLEXNETWORK V3 | ACSA
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тАО06-01-2016 10:47 AM
тАО06-01-2016 10:47 AM
Re: Problem with AP Roaming on HP 5120
Hi,
I think this command is more related to your case:
mac-address mac-roaming enable
For more information see https://abouthpnetworking.com/2014/10/09/comware-irf-l2-mac-address-roaming/
However reading the log message "ARP/5/ARP_DUPLICATE_IPADDR_DETECT: Detected an IP address conflict" its actually from the "arp" engine and not the "mac-address" engine.
So its in the "arp" settings we should look for a solution and not in the "mac-address" configuration.
I think this command would be even more related to your situation:
undo arp ip-conflict prompt
Something else you should consider is to configure your switch with an ip address which isnt in range of the ip addresses used by your wireless-clients.
That is the VLAN used for your AP's would be a pure L2 VLAN (with no VLAN interface configured for this VLAN) and instead create a dedicated mgmt-vlan to be used for management (and logging, clocksynchronization etc) purposes.
At least this would stop your HP5120 from logging this event since the VLAN where the AP's would sit on wont have any VLAN interface setup and because of this no ARP cache and because of this no detection of arp ip-conflicts.