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nhinkle's avatar
nhinkle
Apprentice
Mar 14, 2019
Solved

R7000 in Bridge mode, DHCP not working

I have an R7000p as my internet router with an R7000 connected to it in bridge mode.    The R7000P is running firmware:V1.3.1.44_10.1.23 The R7000 is running firmware: V1.0.9.64_10.2.64   T...
  • nhinkle's avatar
    nhinkle
    Mar 15, 2019

    Thank you for the reply antinode.

     

    I figured out the problem in my network configuration.  To understand it takes a bit more information than I supplied in my original post.

     

    Originally, my home network was two R7000 with one as a router and one as an access point (AP).  When I moved to a larger house, I replaced this configuration with an R7000p as the internet router in the basement on one end of the house and an EX8000 as an AP with a wired backhaul on the first floor on the other end of the house.

     

    After a while,  I wanted to get better throughput in my home office, so I bridged on of the old R7000 to the R7000p (my office is on the second floor directly above the R7000p).  At this point, all was working well (DHCP and attached devices on the router) and I had great throughput. 

     

    My wife had constantly complained about the wifi signal in her office, so I decided to use the other old R7000 in her office as a bridge to the EX8000 (her office is on second floor over the EX8000).  I set it up and all was initially well.  It was the next day that DHCP stopped working on the bridged networks and attached devices was off,

     

    The hint for the problem is the addition of the second R7000 bridge and attached devices being off (DNS).  The real problem was that the first bridged R7000 was named "R7000 - N" and the second was named "R7000 - C".  Spaces are not supported in DNS network names (doh!). 

     

    During the troubleshooting process, I went back to basics and one by one factory reset all the devices, turned them off, and rebuilt the network documenting what I configured and testing DHCP and attached devices after each network device was added. 

     

    When I started at the R7000p, I was configuring the DHCP reserved addresses for the access point, bridges, servers, and shared devices (I always do this before setting the wireless network names and no wired connections so I don't have the DHCP addresses interfering) when I noticed the spaces in the name.  So, I changed them to the acceptable "R7000-N" and "R7000-P".  Then when I configured the R7000s, I made sure the names matched and had no spaces.  Everything now works again.  DHCP works, throughput is great, attached devices works on the R7000p, both R7000s, and almost on the EX8000 (its' attached devices is a bit of a problem child).

     

    Long windedand TMI, but hopefully this helps someone else someday.