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08-08-2011 08:04 PM - edited 08-08-2011 08:08 PM
08-08-2011 08:04 PM - edited 08-08-2011 08:08 PM
HP Procurve 2610 48 PWR PoE - VLAN Drop outs
Hi
We recently setup VLAN 10 and VLAN 20 on a HP Procurve and am getting some odd behaviour that no one can solve. Basically VLAN 20 network (10.10.20.0/24) can reach VLAN 10 (10.10.10.0/24) fine but going between VLAN 10 and VLAN 20 there are long periods of drop out. From the switch itself I can ping the VLAN 20 gateway when it happens but cannot reach anything beyond it. These drop outs occur for periods of about 5-15 minutes and then it works for 5-15 minutes and then drops out again. Its been a nightmare to resolve. A Copy of the config is below. Any help would be appreciated. I am starting to think it maybe the switch at fault. We have third party Juniper firewall support (10.10.10.254) which is the gateway to the internet but they have put everything in place that should enable the VLAN traffic to go both ways and they say its setup correctly.
We have two other HP switches but I moved relevant machines to the main switch in order to isolate the issue as can be seen in the config.
hostname "HP-2610-1" max-vlans 24 qos dscp-map 101110 priority 5 interface 1 name "uplink to TeleTellus Pro (10.10.20.9)" exit interface 49 name "uplink to Phone Server (NEC)" exit interface 50 name "uplink to 10.10.10.109 (HP)" exit ip routing snmp-server community "public" Unrestricted vlan 1 name "DEFAULT_VLAN" untagged 50-52 no ip address no untagged 1-49 exit vlan 10 name "DATA_VLAN" untagged 2-48 ip address 10.10.10.102 255.255.255.0 ip helper-address 10.10.10.210 tagged 50 exit vlan 20 name "VOICE_VLAN" untagged 1,49 ip address 10.10.20.254 255.255.255.0 qos dscp 101110 ip helper-address 10.10.20.200 tagged 2-48,50 voice exit qos type-of-service diff-services ip route 0.0.0.0 0.0.0.0 10.10.10.254 spanning-tree password manager
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08-14-2011 06:54 AM
08-14-2011 06:54 AM
Re: HP Procurve 2610 48 PWR PoE - VLAN Drop outs
Hi
You have separate voice and data VLANs. Your complete telephony system seems to be connected to your voice VLAN. Since the idea of doing this is to separate voice and data traffic, why do you want to route traffic between these VLANs in the first place?
HTH,
Arimo
HPE Networking Engineer
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08-24-2011 09:01 PM
08-24-2011 09:01 PM
Re: HP Procurve 2610 48 PWR PoE - VLAN Drop outs
so that the PC with telephone reporting software can communicate with the NEC server.
and so the users on 10.10.10.0 network can access their voicemail admin features on the NEC server.
basically the phone server on 10.10.20.0/24 needs to be able to be reached by various PC's on 10.10.10.0/24
I have found a work around by putting a second NIC in the server with 10.10.20.0 network ip address. This at least gives me a way onto that network when I need it.
I am going to speak to HP support now as I believe this issue is a fault on the switch since various tests point to it. maybe arp or something.
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08-25-2011 10:54 AM
08-25-2011 10:54 AM
Re: HP Procurve 2610 48 PWR PoE - VLAN Drop outs
I guess ports 2-48 should be _untagged_ in vlan 10 and tagged in vlan 20, so PCs connected to that ports can access VLAN 10 easily.
Is this switch is the main router for VLANs 10 and 20?
Who is the default gateway for hosts in VLAN 10?
Also you can omit adding ip helper-addresses in VLANs pointing to DHCP from the same VLAN.
hth,
oleg