Wireless Access

Hi all,

Im stuck in the middle of configuring MSM760 with this setup:

AP-----------A5800---------(LAN PORT)MSM760

-A5800 switches will act as dhcp server to give IPs for wifi client

-MSM760 LAN port is connected to A5800

-MSM460 AP is also connected to A5800

-3 Vlans used for 3 different SSIDS (VLAN 10,20,30)

I have created VSC profile and it can broadcast SSIDs but the wireless client cannot get the ip from DHCP server from A5800. My configuration so far:

-DHCP server is working fine with the wired client, but not for wireless.

-in MSM760, dhcp relay is enable where dhcp server ip is pointed to vlan interface in A5800 (not sure is it right or not)

Anyone could advise/guide me with the configuration of this particular item?

-A5800 port that connect to MSM760 

-MSM760 LAN port

-A5800 port that connect to Access Point

THANKS,

Regards,

Wan

Wan,

Basically, there are 2 x design models that you can use with wireless:

• Centralised / Tunnelled : All wireless traffic is tunnelled to the controller where it egressed into the appropriate VLAN.
• Distributed / Bridged : All wireless traffic is egressed directly into the appropriate VLAN from the AP.

The design decisions behind these models are well documented and easily googleable, however if using an MSM760 in the enterprise, I would recommend using a distributed design as the appliance only has 1 x 1GbE LAN interface (hospitality/guest/BYOD is different).

Assuming that you are implementing a distributed design, and (for the purposes of this config) that the MSM760 and APs are in VLAN 5, I would do the following:

# Controller = Access Port in VLAN 5

interface 1/0/X

  description MSM Controller
  port link-type access
  port access vlan 5

#

# APs = Trunk port, pvid = 5, allowing 5,10,20,30

interface 1/0/Y

  description MSM Controller

  port link-type trunk
  port trunk permit vlan 5,10,20,30
  port trunk pvid vlan 5

  poe enable

#

I wouldn't configure the DHCP relay on the MSM controller, but instead put the config on the VLAN interfaces of vlan 10, 20 and 30 of the 5800.

dhcp relay server-group 1 ip A.B.C.D

dhcp enable

interface Vlan-interface10
  ip address ...............
  dhcp select relay
  dhcp relay server-select 1

#

interface Vlan-interface20
  ip address ...............
  dhcp select relay
  dhcp relay server-select 1

#

interface Vlan-interface30
  ip address ...............
  dhcp select relay
  dhcp relay server-select 1

#

I hope that this helps.

Regards,

Pete W

Hi Pete,

Thanks for the fast response.

The problem is solved now.

What I do are :

-Trunk the AP port that is connected to switch

-Disable DHCP relay at VSC profile

AP-------(trunk)------5800 Switch------(trunk)-------Controller MSM 760 (LAN port)

In your solution, the port of the switch that is connected to controller configure as access port that was different with my configuration. Is it working?

thanks