#18623: Asus RT-N18U broken netwok
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Reporter: Grrruk | Owner: developers
Type: defect | Status: new
Priority: normal | Milestone: Chaos Calmer (trunk)
Component: base system | Version: Trunk
Resolution: | Keywords: RT-N18U
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Comment (by rmilecki):
Today I was testing my Buffalo WZR-600DHP2 a bit, which is based on
BCM47081A0 just like the Asus from the bug report:
https://wikidevi.com/wiki/ASUS_RT-N18U
https://wikidevi.com/wiki/Buffalo_WZR-600DHP2
I was able to reproduce some minor network problem. Sometimes (randomly) I
can't communicate (ping) the router for the first 10-30 seconds after
OpenWrt starts the interfaces.
After network starts working it's stable. I can ping routers for dozens of
minutes and performance looks solid too:
`[ 3] 0.0-600.0 sec 22.9 GBytes 329 Mbits/sec`
I added some debugging messages to the bgmac: it seems to be receiving
packets and it seems it tries to transmit responses (and hardware confirms
that packets were consumed by a proper IRQ):
{{{
[ 21.912021] bgmac: [bgmac_interrupt] int_status:0x00010000
(BGMAC_IS_RX)
[ 21.918717] bgmac: [bgmac_poll] int_status:0x00010000 (BGMAC_IS_RX)
[ 21.924954] bgmac: [bgmac_dma_rx_read] ring->start:3
[ 22.308656] bgmac: [bgmac_dma_tx_add] ring->start:29
[ 22.313627] bgmac: [bgmac_interrupt] int_status:0x01000000
(BGMAC_IS_TX0)
[ 22.320431] bgmac: [bgmac_poll] int_status:0x01000000 (BGMAC_IS_TX0)
}}}
However wireshark running on my PC doesn't see any packets coming from the
router.
--
Ticket URL: <https://dev.openwrt.org/ticket/18623#comment:6>
OpenWrt <http://openwrt.org>
Opensource Wireless Router Technology
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