Linksys XAC1900 - Seems to work?

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zid
DD-WRT Novice


Joined: 31 Jul 2019
Posts: 3

PostPosted: Wed Jul 31, 2019 21:43    Post subject: Linksys XAC1900 - Seems to work? Reply with quote
There doesn't seem to be any official support for this in any list I could find, but I found it was 'basically an EA6900 with a modem' (which I don't use or care about).

And it turns out... that's pretty true.

I was sick of the stock firmware and decided I was either going to brick it or toss it out; I flashed the EA6900 v40452 firmware and it appears to work.

I'm not sure how many issues are with dd-wrt, how many are with the hardware and how many are with my configuration from it not being supported, but for the most part it appears fine.

Teething issues:
I couldn't get my ipv6 tunnel working from the GUI, but manually starting radvd with the output of radvdump worked fine.

Web GUI seems very slow, up to 10 seconds to load a page, not sure why.

600/800MHz cpu speed toggle doesn't seem to do anything.

2.4 and 5ghz wifi appears to work, ethernet works fine, hasn't crashed yet.



Would you guys recommend any specific steps, like clearing the nvram to some known state or posting any certain logs?

Code:

Devices I have:

br0       Link encap:Ethernet  HWaddr 14:91:82:34:B9:A3
eth0      Link encap:Ethernet  HWaddr 14:91:82:34:B9:A3
eth1      Link encap:Ethernet  HWaddr 14:91:82:34:B9:A5
eth2      Link encap:Ethernet  HWaddr 14:91:82:34:B9:B5
vlan1     Link encap:Ethernet  HWaddr 14:91:82:34:B9:A3
vlan2     Link encap:Ethernet  HWaddr 14:91:82:34:B9:A4


Only unusual thing in dmesg:
br0: received packet on vlan1 with own address as source address
br0: received packet on eth1 with own address as source address

CPU temp: 70C

Load is 0%
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jwh7
DD-WRT Guru


Joined: 25 Oct 2013
Posts: 2303
Location: Indy

PostPosted: Thu Aug 01, 2019 16:23    Post subject: Linksys XAC1900 running EA6900 v40452 firmware Reply with quote
zid wrote:
I flashed the EA6900 v40452 firmware and it appears to work. [...]

I couldn't get my ipv6 tunnel working from the GUI, but manually starting radvd with the output of radvdump worked fine.

Web GUI seems very slow, up to 10 seconds to load a page, not sure why. [...]

Only unusual thing in dmesg:
br0: received packet on vlan1 with own address as source address
br0: received packet on eth1 with own address as source address
Ya, DD won't support any modem combo devices. Interesting find though; what is the FCC ID (or other regulatory IDs) and `nvram show|grep board` output? I'll update the EA6900 wiki with a note about this.
EDIT: I see this really isn't a single combo device, it comes as a kit with a separate modem.

The GUI sluggishness (and maybe also IPv6) is due to recent builds. The 'received packet...with own address' msg is pretty common too, though usually in bridged modes. I'd guess this is due to devices differences (like the modem) vs EA6900.

You definitely should clear nvram and manually set up, after you save a backup of it in case there are issues. Let us know how it goes. Smile I'd also recommend a copy/paste of a `nvram show` output from telnet; into a spreadsheet is handy in case you need to sort/vlookup anyway in the future. I'd be curious if any params change that match `nvram show|grep -ie mac -e vlan -e port` in telnet.

_________________
# NAT/SFE/CTF: limited speed w/ DD # Repeater issues # DD-WRT info: Builds, Types, Modes, Changelog, Peacock, Demo #
x64 OPNsense 19.7.2|EA6900v1.1@1GHz FT 2019.3b|DD 40599: WNDR4500v2, WNDR4000@533, E1500@353, R6300v1,
2*E2500, WRT54*@250: GLv1.1 nsg, GSv6 µ
|RT-N66U@663 Merlin 380.70|OEM: WGR614v10@400-WNR1000v3 mod
zid
DD-WRT Novice


Joined: 31 Jul 2019
Posts: 3

PostPosted: Fri Aug 02, 2019 18:45    Post subject: Reply with quote
No idea what the FCC ID is, I'm not in the US and it doesn't appear to be written under the device anywhere.


nvram show | grep board
Code:

boardrev=0x1100
1:boardflags=0x30000000
size: 32940 bytes (32596 left)
boardtype=0xD646
boardflags2=0x00000000
0:boardflags=0x00001000
boardflags=0x00000110
0:boardflags2=0x00100002
0:boardflags3=0x00000003
1:boardflags2=0x00200002
1:boardflags3=0x00000000
boardnum=01


Full nvram: https://gist.github.com/zid/a585ce1f0a79732dc4edf9fe7fbb9b36 (incl bonus wifi password)

Just did an nvram reset && reboot, takes a few minutes to boot but it's working fine.

EDIT: tunnel is playing up, messing with it now.
Nothing I change in the ipv6 panel appears to 'go live' on the actual settings. sit0 is empty, no devices have the 2001:xx address assigned to them, etc.

You said the latest revisions may be having issues, is there a good stable version?
kernel-panic69
DD-WRT Guru


Joined: 08 May 2018
Posts: 1854
Location: Texas, USA

PostPosted: Fri Aug 02, 2019 19:16    Post subject: Reply with quote
Just dropped today, but not sure if all the issues are fixed yet, but getting closer:

https://download1.dd-wrt.com/dd-wrtv2/downloads/betas/2019/08-02-2019-r40501/
zid
DD-WRT Novice


Joined: 31 Jul 2019
Posts: 3

PostPosted: Fri Aug 02, 2019 19:33    Post subject: Reply with quote
Updated to r40501.

IPv6 is now working on the router, radvd still needs to be re-done manually it seems though.

Not sure if it was the reboot or the upgrade that ultimately fixed it, but that's one problem down for now!

EDIT:

dmesg:
ipcomp6: Unknown symbol xfrm6_tunnel_alloc_spi (err -2)
ipcomp6: Unknown symbol xfrm6_tunnel_spi_lookup (err 0)

uh-oh that seems bad, that looks like modprobe/insmod has exploded due to incorrect kernel config? I'm not sure if I'm using ip compression or not though to
know if that's fatal or just annoying. (I don't think I am though)


Edit2:
I eventually gave up fiddling trying to get my ipv6 to work, blew out all the settings, rebooted, put them back identically and now it works *grumble*
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