How many VLANs are supported by a Cisco 1921 router?

Bruce,

Is the goal to use a different VLAN for each access point (AP)? If so then you will need to configure each NetGear port to use the same VLAN as the AP that is connected to it. You will then need either a switched virtual interface (SVI) for each VLAN on the NetGear or a trunk port (802.1q) from the NetGear to the Cisco. I'm not sure the NetGear will support SVIs but it will support trunks. An SVI basically creates a gateway for each VLAN's subnet. For example, let's say AP1 uses VLAN 10 and the subnet is 10.0.10.0/24 while AP2 uses VLAN 20 with a 10.0.20.0/24 subnet. The NetGear will need 2 SVIs, one for each VLAN/subnet. The first SVI for VLAN 10 can be configured with IP address 10.0.10.1/24 while the second SVI can be configured with 10.0.20.1/24 for VLAN 20. These IP addresses will be the gateway for each VLAN. Finally, the NetGear would need to act as a router and route each VLAN's subnet to the Cisco device. Once again I don't believe the FS726TP supports this.

The other solution would be to create a VLAN trunk port between the NetGear and the Cisco device but I believe the Cisco RV042 does not support trunking. If it does the trunk would be configured to carry all of the VLANs to the Cisco device which would then have SVIs created on it.

If neither of the above is possible you would need to use the same VLAN for each AP and each of the interfaces on the NetGear and Cisco devices which negates the need for the VLANs.

I hope this helps.

The short answer: No

The long answer: You will need a device that will handle call control. That can be an ISR router (gen2 example: Cisco 1900, 2900, or 3900 series) that runs Call Manager Express, or a Cisco UC5XX Box (or even full blown CUCM, though you will still need an ISR to get out to the PSTN). The switch will work great for the infrastructure side of things though. It is capable of layer 3 routing, voice VLANs, QoS, and PoE. But you WILL need something for call control.

The point of separate VLANs is to keep traffic on one VLAN from reaching the other VLAN. So, you asked for the two VLANs to be "isolated" from each other.

Make sure that the frame encapsulation is set on the router to 802.1q on each of the sub-interfaces. You could also try fixing the speed and duplex on both the router and the switch in case there is a problem negotiating the speed and duplex.

Hope that helps!

Usually you can create VLANs on routers. On cisco 1700 (based on ur image) you can create multiple VLANs.
If you can give me the exact model number on dlink i can help you to fix the problem.

Going through the GUI would take too long, so use CLI to add the commands below. After that, check the GUI and see how those changes appear.

VLANs:
On all equipment use 802.1q tagging. The example below puts adsl ports 1 to 10 in vlan10 and ports 11-12 in vlan2. These vlans are 802.1q tagged on the ethernet ports.

switch vlan set 1 1~12:X enet1~enet2:FT DEFAULT
switch vlan set 2 1~10:X 11~12:FU enet1~enet2:FT VLAN2
switch vlan set 10 1~10:FU 11~12:X enet1~enet2:FT VLAN10
switch vlan set 17 1~12:X enet1~enet2:FT VLAN17
switch vlan pvid 1~10 10
switch vlan pvid 11~12 2
switch vlan pvid enet1~enet2 1
switch vlan priority * 0
switch vlan gvrp * disable
switch vlan frametype * all
switch vlan cpu set 1

ATM circuit:
Each port requires one or more VPI/VCI circuit. You could map different circuits to corresponding vlans. The config below creates a primary circuit 1/35 on each port. On ports 5 and 9 is another circuit 1/32 mapped to vlan10

adsl pvc set * 1 35 super DEFVAL
adsl pvc set 5,9 1 32 10 0 DEFVAL

Remember a dslam is just a switch, bridging packets from a VC onto a VLAN or straight onto ethernet.

The Procurve 1800 SWITCH series supports 802.1p, 802.1q VLANS, 802.3ad LACP, 802.3x Flow control, RFC1534 DHCP/BOOTP interoperation, the Cisco 2800 series is a ROUTER and dependant on its IOS version will support a multitude of routing/security features that the Procurve just isnt designed to do.

your router have reset switch just press, then off router and on.