SJA1110 ping external PHY destination host unreachable

[lin_johnny]

Hi,

I'm using the S32 Design Studio 2018.R1 with S32SDK_SJA1110_EAR_0.8.0 to develop SJA1110 as L2 switch. we have an external Marvell 88Q 1G PHY connect to SJA1110, so I try to modify generic PHY driver to run on auto-negotiation mode 1G. The external PHY is now auto-negotiation enable and link up with 1G speed, but I meet the ping problem as below: 

PING 192.168.0.200 (192.168.0.200) 56(84) bytes of data.
From 192.168.0.32 icmp_seq=1 Destination Host Unreachable
From 192.168.0.32 icmp_seq=2 Destination Host Unreachable
From 192.168.0.32 icmp_seq=3 Destination Host Unreachable
From 192.168.0.32 icmp_seq=4 Destination Host Unreachable
From 192.168.0.32 icmp_seq=5 Destination Host Unreachable
From 192.168.0.32 icmp_seq=6 Destination Host Unreachable

^C
--- 192.168.0.200 ping statistics ---
9 packets transmitted, 0 received, +6 errors, 100% packet loss, time 8171ms

Because other internal PHY ports are workable to ping, I think maybe I lost something to open.

Does there any interface or choose options I need to open up to make it work? 

Thanks,

Johnny.

[bpe]

Ping exchanges echo messages with a host, not a switch. This exchange may
occur over multiple network segments, switches, PHYs, etc.  Lack of echo
responses by itself says nothing about the status of any switch or PHY in the
transmission path.

Typically, the PHY driver informs the network stack that the link is up. How it
occurs, if at all, totally depends on where and how the PHY is connected and
what entity it is controlled by. Note that the SJA1110 SDK only offers an API to
control the PHY and does not mandate any particular way to use it. If you
have only one problematic PHY/link out of several initialized/controlled  by the
same entity, you can look at the code that brings up the working links and do the
same for the problematic one.

Have a great day,
Platon

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