7 Replies Latest reply: May 24, 2009 12:06 PM by Tesserax
DesertRatR Level 1 Level 1 (10 points)
I have a Time Capsule hooked to a Linksys RV042 router, and thence to a DSL modem. The router handles all of my security. The modem is bridged and NAT is off on TC. TC is set to DHCP. Does TC have a DHCP client list? I am asking because I have a Linksys WGA600N gaming adapter attached to my satellite TV decoder box to access web-based programming. The WGA connects to TC on 5 a GHz channel. It all works. However, I need to access the WGA web based set up utility to do some tweaking of the WGA. Cisco claims either http://wga600n or else an IP address from my DHCP client list will access the WGA. http://wga600N doesn't work. I can see the client list in the RV042, but if TC is also DHCP doesn't it have it's own client list table? I did try all IP addresses in the RV042 client list, but no luck. Any thoughts?

Macbook, Mac OS X (10.5.5)
  • Tesserax Level 8 Level 8 (49,415 points)
    The closest the Time Capsule (TC) would have to a DHCP "Client List" can be found under AirPort Utility > Manual Setup > Advanced > Logging & SNMP > Logs and Statistics > DHCP Clients tab.

    Enabling just the TC's DHCP would be done by setting Connection Sharing = Distribute a range of IP addresses. This setting was intended to allow the TC to distribute a set of static IP addresses provided by the ISP. Is there a particular reason you want to run two DHCP servers that are in series with each other?
  • DesertRatR Level 1 Level 1 (10 points)
    My TC has slightly different configuration: Manual Setup > Advanced > Logs and Statistics > Wireless Clients, which shows the MAC addresses of the connected devices but not the IP addresses.

    I don't know enough about this to talk intelligently. I know the router needs to be DHCP. And I have several devices besides TC connected to it. As for TC, I don't know if it needs to be set to DHCP. TC is my wireless access point, as well as having 2 MacBooks connected via ethernet. Would it be better to set TC to a fixed IP address behind my router? Would the devices connected to TC still all connect properly?
  • Tesserax Level 8 Level 8 (49,415 points)
    Since you, essentially, have two routers in-series, only one needs to be configured for DHCP. Typically your Internet provider's modem would provide an IP address to a single device connected to it. This modem, by default, would be configured as a gateway and not as a bridge. In turn, the router directly connected to the modem, would be configured to provide both NAT & DHCP services for the private (local) network ... regardless of how many other routers are downstream of this first one.

    When you do employ additional routers in the private network, you typically would reconfigure them as bridges to "pass thru" the NAT & DHCP services from the router attached to the modem. Make sense so far?

    So, in your case, I would expect the Linksys to be configured to provide both NAT & DHCP and the TC configured as a bridge and NOT providing DHCP.
  • DesertRatR Level 1 Level 1 (10 points)
    I figured I needed to set TC to not do DHCP. I've got the Internet > Internet Connection > Connection Sharing set to Off (Bridge Mode). So it should be bridged, if I understand this correctly. What about the IPv4 setting? It is set to Using DHCP. Leave it alone? I can switch it to manual and set a static IP address. If I do that, wouldn't I have to set a static IP address on my router, using the TC MAC address as the basis for the static address?
  • Tesserax Level 8 Level 8 (49,415 points)
    I figured I needed to set TC to not do DHCP. I've got the Internet > Internet Connection > Connection Sharing set to Off (Bridge Mode). So it should be bridged, if I understand this correctly.


    That is correct. In Bridge Mode both the NAT & DHCP services of the TC are disabled. The TC is not performing as a router, but as a Wireless Access Point (WAP) and an Ethernet switch.

    What about the IPv4 setting? It is set to Using DHCP. Leave it alone?


    If you want the TC to have a static IP address, then set Configure IPv4 = Manually, otherwise leave it as "Using DHCP" so the upstream router can provide it with a dynamic private IP address.

    I can switch it to manual and set a static IP address. If I do that, wouldn't I have to set a static IP address on my router, using the TC MAC address as the basis for the static address?


    Typically, you want to configure WAPs, servers, network printers, & NAS devices with a static private IP address so that network clients always now "where" they are located. You would, in turn, administer your Linksys to either provide reserved DHCP addresses (linked to each of the device's MAC address) or use the router's static IP addressing function.
  • DesertRatR Level 1 Level 1 (10 points)
    +If you want the TC to have a static IP address, then set Configure IPv4 = Manually, otherwise leave it as "Using DHCP" so the upstream router can provide it with a dynamic private IP address.+

    Is there any reason to configure TC with a static IP address?

    +Typically, you want to configure WAPs, servers, network printers, & NAS devices with a static private IP address so that network clients always now "where" they are located. You would, in turn, administer your Linksys to either provide reserved DHCP addresses (linked to each of the device's MAC address) or use the router's static IP addressing function.+

    I have an Ethernet hub attached to TC, with an NTSF HD attached. I want to use it to backup my XP partition running under Fusion. I am having a lot of problems accessing the HD from the XP session. Based upon what you just told me I am thinking I need to plug it into the Linksys and set it with a static IP address. Can you please confirm that is the right thing to do?
  • Tesserax Level 8 Level 8 (49,415 points)
    Is there any reason to configure TC with a static IP address?


    It really comes down to if you need to access the TC from the WAN/Internet. On the private (local) network, it can easily be found by clients whether or not it has a static IP address.

    Based upon what you just told me I am thinking I need to plug it into the Linksys and set it with a static IP address. Can you please confirm that is the right thing to do?


    Not necessarily right or wrong, but another valid option that would allow your local network clients access to the HD.