DHCPOFFER delay VLAN

Posted by john883 on Server Fault See other posts from Server Fault or by john883
Published on 2010-04-13T12:33:48Z Indexed on 2010/04/13 12:43 UTC
Read the original article Hit count: 295

Filed under:

cisco

|

vlan

|

linux

I have configured two VLANs [ 15 and 16 ] and a trunkport on a Cisco Catalyst 2960. The trunkport is connected to eth2 on a Linux server The server is configured to support VLAN's and the interfaces eth2.15 eth2.16 is configured with ip addresses on two different subnet. dhcp3-server is running on the same server and hands out IP-addresses to the VLANs.

When connecting a client to a port that is configured in ex. VLAN 15 and requesting a IP-address, i experience a long delay before recieving a DHCPOFFER, around 30 seconds or so, the client needs to send a DHCPDISCOVER about five times but will always recieve a DHCPOFFER.

Any suggestion why this delay is happening?

© Server Fault or respective owner

Related posts about cisco

Cisco Unifed Communication integration for Microsoft Lync crashes on Remote Desktop services 2008 R2!

as seen on Server Fault - Search for 'Server Fault'
Hi everybody i have deployed office communication server 2007 R2 and communicator 2007 R2 and i made integration with Cisco Unified Communication Manager 7.1 in my network, i also uses Remote Desktop Servers 2008 R2 for Thin Client Computers, now that i installed Cisco UC integration client for communicator… >>> More
Cisco Unified Communication integration for Microsoft Lync crashes on Remote Desktop services 2008 R2!

as seen on Server Fault - Search for 'Server Fault'
Hi everybody i have deployed office communication server 2007 R2 and communicator 2007 R2 and i made integration with Cisco Unified Communication Manager 7.1 in my network, i also use Remote Desktop Servers 2008 R2 for Thin Client Computers, now that i installed Cisco UC integration client for communicator… >>> More
Cisco Prime NCS not starting

as seen on Server Fault - Search for 'Server Fault'
I have received the Cisco Prime OVA file and which we placed onto an Oracle virtual environment. We turn the VM on and the CLI boots, When we try to start the NCS service we get errors. HOSTNAME/USER# ncs start Starting Network Control System... Exception in thread "main" java.lang.NullPointerException … >>> More
how to set port forwarding on a cisco 881 router (with cisco configuration professional)

as seen on Super User - Search for 'Super User'
I recently got a cisco 881 router for work and I have everything working except port forwarding I want to forward all incoming port 80 requests to 10.10.10.60 and all incoming port 53322 requests to 10.10.10.40 im using cisco configuration professional and im not sure where to find this option thanks… >>> More
Cisco: Site-to-site VPN with cisco 878 and ASA weirdness

as seen on Server Fault - Search for 'Server Fault'
I currently have 2 sites, both connected to each other through 2 firewalls / routers in a site-to-site VPN. Pinging from server to server (Using 2mb/2mb SDSL) through that VPN obviously works, however, at one site, we have another internet connection (7m/400k ADSL), and only the link between the two… >>> More

Related posts about vlan

Cisco vlan entry missing in vlan.dat, but appears in running-config

as seen on Server Fault - Search for 'Server Fault'
One of our vlan's (ID: 104) stopped working suddenly and computers on that vlan failed when trying to obtain a dhcp ip address. On the Cisco switch if we do show vlan, this command is supposed to shows the vlans in the vlan.dat file. We notice it has every other vlan except the one that is now missing… >>> More
Unable to access VLAN host from VLAN interface in CentOS

as seen on Server Fault - Search for 'Server Fault'
I am playing with VLAN (Virtual LAN) configuration on CentOS 6.4. I have 2 interfaces, eth0 and eth1. I have configured 2 VLAN interfaces eth0.20 and eth0.30 as #file: ifcfg-eth0.20 #------------- VLAN=yes DEVICE=eth0.20 TYPE=Ethernet ONBOOT=yes NM_CONTROLLED=no BOOTPROTO=static IPADDR=192.168… >>> More
Multiple vlans access to shared pbx system

as seen on Server Fault - Search for 'Server Fault'
I'm new to networking and was looking for some assistance. First off I'm using packet tracer to diagram my scenario as I will be receiving my equipment next week to deploy. Hardware to be used: 2 catalyst 3560 switches all connect to a sonic wall router I have two companies that work in the… >>> More
VLAN ID 4095 for guest VLAN tagging

as seen on Server Fault - Search for 'Server Fault'
Just want to know if it's true that if you use the VLAN ID 4095 for guest VLAN tagging, then vMotion will not work correctly as there is nowhere to pass back the reverse arp to? So, the problem we have noticed is when we have vmotioned VM's that are tagged on our trunk network, you cannot ping them… >>> More
vlan change via scvmm not working

as seen on Server Fault - Search for 'Server Fault'
Hi i have a windows 2008 R2 hyper-v server which is managed via scvmm 2008 R2. the guest os running on the hyper-v server is winxp with sp3. if i change the vlan id via scvmm the guest doesn't get an ip via dhcp i looked in the properties of the vm with the hyper-v mmc an see the vlan changed correctly… >>> More