Ethernet Switches & Routers

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New Contributor
Posts: 2
Registered: ‎12-15-2010

Multiple DHCP Pool

Hi,

I have Brocade FastIron Series FCX Switch running with 7400 Router Code.

In this switch we have created multiple VLANs & individual DHCP Pools for VLANs.

The problem is that when we connect a PC to access port of VLAN 301, PC immediately take IP Address via DHCP, but when we connect a PC to access of VLAN 401, PC sometime take lot of time to take the IP through DHCP & sometime it does not take IP at all.

Even if both the PC take IP via Switch DHCP Server, through individual VLAN DHCP Pool, if we swap the PC between VLANs, i means PC which was connected to VLAN 301 , now swapped to VLAN 401 & PC which was connected to VLAN 401 now swapped to 301, both the PC does not renew IP through individual VLAN DHCP POOL.

What could be the possible problem. Also is there any way through which we can fine tune some parameter which which IP renew process can be fast?

Below is the configuration

vlan 301 name User2_VLAN by port

tagged ethe 1/1/14 ethe 1/1/21 to 1/1/48 ethe 2/1/21 to 2/1/48

untagged ethe 1/1/10

router-interface ve 301

spanning-tree

!

vlan 401 name Guest_VLAN by port

tagged ethe 1/1/14 ethe 1/1/21 to 1/1/48 ethe 2/1/21 to 2/1/48

untagged ethe 1/1/3 ethe 2/1/10

router-interface ve 401

spanning-tree

ip dhcp-server enable

ip dhcp-server pool 301

dhcp-default-router 10.120.3.1

domain-name test.com

excluded-address 10.120.3.1

lease 8 0 0

network 10.120.3.0 255.255.255.0

deploy

!

!

ip dhcp-server pool 401

dhcp-default-router 10.120.4.1

domain-name 123.com

excluded-address 10.120.4.1

lease 8 0 0

network 10.120.4.0 255.255.255.0

deploy

Interface Ve 301

ip address 10.120.3.1/24

Interface Ve 401

ip address 10.120.4.1/24

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