What I understand by your post is whether or not you can configure a specific DHCP pool for each VLAN and the answer is yes. Now what you need to do is, create a DHCP scope on a 3560 just like any other IOS DHCP configs ...here is a sample config: interface vlan 1 ip add 1.1.1.1 255.255.255.0 interface vlan 2 ip address  2.2.2.1 255.255.255.0 ip dhcp excluded-address 1.1.1.1 1.1.1.10 ip dhcp excluded-address 2.2.2.1 2.2.2.10 ! ip dhcp pool vlan1    network 1.1.1.0 255.255.255.0    domain-name cisco.com    dns-server 4.4.4.2 4.4.4.1    default-router 1.1.1.1    lease 3 ! ip dhcp pool vlan2     network 2.2.2.0 255.255.255.0     domain-name cisco.com     dns-server 4.4.4.2 4.4.4.1     default-router 2.2.2.1     lease 3 ! Here is the link for configuring IOS DHCP services: http://www.cisco.com/en/US/docs/ios/ipaddr/configuration/guide/iad_dhcp_svr_cfg_ps6441_TSD_Pro Please rate the helpfull posts. Regards, Naidu. ... View more

Q) in the line "ip dhcp pool DATA", the term DATA rerfers to VLAN ID? e.g if we have VLAN 20 than we will configure: The word "DATA" I mentioned in as dhcp pool is just for comfort level and it is not and no need as a VLAN ID, it can be any word as per your comfort. Say for example I have named the dhcp pool as "DATA" because the pool is particularly defined for DATA network means users. There can be another pool seperately for VOICE (IP phones) then that would be named as VOICE as per my comfort levels. So the naming word can be anything just for your understand and comfort. Please rate the helpfull posts. Regards, Naidu. ... View more

Hi Abbas, As long as you have a seperate Vlan's then it would be possible to allocate bandwidth under the vlan's See the below two individual examples may help in your scenario. STEP-1: Apply rate-limit on each L3 vlan interface in your 2851 Example (for 1024kbits for vlan 2): Router# conf t Router(config)# int vlan 2 Router(config-if)#rate-limit input 1000000 187500 375000 conform-action transmit exceed-action drop Router(config-if)#rate-limit output 1000000 187500 375000 conform-action transmit exceed-action drop STEP-2: Policy a specific VLAN number on VLAN interface. class-map vlan5 match vlan 5 match class-map class-default policy-map vlan5-limit class vlan5 police 2000000 250000 exceed-action drop int vlan5 service-policy input vlan5-limit After you apply this configuration, the traffic with VLAN 5 coming from any will be policed at 2Mbps. Hope this will help you. Please rate the helpfull posts. Regards, Naidu. ... View more

Hi Tek, Q) For DHCP, could you please elaborate the "IP Helper Addresss" i.e. how we can use it. Can we configure DHCP Server on Cisco 3560? please give some example. IP helper address command used when you have the DHCP server either Windows machine or Router in different VLAN (different network). Say for example you have multiple vlans configured in your 3560 and you have that DHCP server in one vlan (say vlan 10 IP: 192.168.10.0/24), you have another multiple vlans and those need to get IP from this DHCP server then you have to redirect the dhcp request from the particular vlan to DHCP server which is posible with the "ip helper-address" command Q) With inter-vlan routing on 3560, we are further connected to the 1841 Router, can we use it for DHCP Server using IP Helper Address? please give some example. I would suggest you to user your 3560 switch as a DHCP server not that 1841 because it is a edge router and you can use it for WAN routing. Please find the below related config for DHCP in 3560: ip dhcp pool DATA    network 10.110.224.128 255.255.255.240    default-router 10.110.224.129    dns-server 10.98.112.32 10.55.0.32    netbios-name-server 10.52.64.37 10.24.128.151    lease 0 1 ! you can adapt this to your needs. you need to exclude ip addresses that are statically assigned including C3560 SVI interface IP address with commands like the following: ip dhcp excluded-address 10.110.224.129 10.110.224.132 ip dhcp excluded-address 10.110.224.145 Please rate the helpfull posts. Regards, Naidu. ... View more