Linksys EZXS16W Switch + BEFSR11 Cable/DSL Router Problems

Have a question or want to start a discussion? Post it! No Registration Necessary.  Now with pictures!

Threaded View


If I am posting in the wrong group, please let me know.

I have a Linksys BEFSR11 Cable/DSL Router.  Up until yesterday, I was
using a Linksys EFAH08W 8-port hub to share this connection to several
computers.  That worked fine.

I am planning to add more PCs to my network, so I needed something
bigger than the 8-port hub.  I decided to go with the Linksys EZXS16W
16-port switch.  That gave me plenty of ports and the added benefits of
a switch (instead of a hub).

Unfortunately, now I am having problems.

With the switch, I lose the connection to the router (and thus the WAN)
frequently -- say every 20-30 min.  When this happens, I can't even
bring up the web admin interface for the router from inside the LAN.
Restarting the switch does not seem to help.  Oddly enough, restarting
the router is all that seems to fix it.

After stuggling with this issue all morning, I took out the switch and
put my hub back in.  Now it seems fine again.

Some other details that might help:

On the router, I was a little confused about whether to use the "X" or
"||" (crossover or straight-thru) setting for the uplink port.  The
manual seems to indicate the straight-thru setting for a switch with a
cross-over uplink port (which the switch has, I think).  But it seemed
to behave exactly the same no matter how I set this on the router.  I
am using a straight-thru cable.

Also, I have the MDI/MDIX setting on the switch depressed, which should
be the correct setting. According to the docs, "To utilize the port's
uplink capability, the MDI/MDIX button must be depressed.  If the
button is not depressed, port 16 will function as a normal 10/100 port."


Re: Linksys EZXS16W Switch + BEFSR11 Cable/DSL Router Problems


Quoted text here. Click to load it

For starters the MDI/MDIX setting on the switch is only if uplinking to
another device from the switch.  That shouldn't be an issue in this
situation.  In this case you are uplinking from the routers LAN port.  In
your case either setting on the router should work since the EZ16 has auto
detecting ports which might be why you don't see any difference.

Just for a hip shot here I'm gonna say your connections seem ok but it
sounds more like something running on your LAN is causing your router to be
swamped thus causing the issue.   Are you running any P2P apps from any
computers behind the router?   That is what this situation sounds like is
happening.  Perhaps you didn't see this before because a Hub does not use
the same bandwidth as a Switch.  A Hub splits the bandwidth while a Switch
allows your network to use it all.   If that is what is happening many P2P
apps flood cheapo SOHO routers with too many simultaneous connections and
can create router lockups causing what you are seeing.




Re: Linksys EZXS16W Switch + BEFSR11 Cable/DSL Router Problems


Jbob wrote:
Quoted text here. Click to load it

I see.  I guess I misunderstood that.  I was thinking that because I
was "uplinking" to my router from the switch that I needed to have the
MDI/MDIX depressed.  You're saying that this is only if I was using it
to uplink another device to the switch.

That means the button should *not* be depressed so it functions like a
regular port, right?

Quoted text here. Click to load it

That would make sense, based on what I'm observing.

Quoted text here. Click to load it

No, I'm not doing anything like this.  The connection problems occurred
when I wasn't even doing anything network intensive -- e.g., some email
and browsing.

I'm wondeirng if my only issue was the incorrect setting on the
MDI/MDIX?  Or does that simply make port 16 crossover vs. straight thru?


Re: Linksys EZXS16W Switch + BEFSR11 Cable/DSL Router Problems


Quoted text here. Click to load it

Basically it's this way, you are Uplinking to the Switch From the Router not
the other way around.  The MDI/MDIX(the X is for Crossover) switch on the
EZ16 is only for Port 16 if you are running a cable from the EZ16 port 16 to
another device like another Switch.


Quoted text here. Click to load it

That confuses me as well.  I think the Crossover vs Straight-Through
selector on the Router is dependent on cabling and device connecting too.
That Router is a bit older now and most devices now have Auto detecting
switch ports and can "electronically" work with either straight-through or
crossover cables.  The EX16 Lan ports can determine whether they are being
used as an Uplink or standard switch port.  I think they are designed to be
used with either cables but again the switch selection on the Router throws
me for a loop.  It might not matter either.

As far as your Router problem that has me stumped.  Not sure what it could
be.  Can you try hooking one computer to the Router Lan port and see if you
see the same thing happening?



Re: Linksys EZXS16W Switch + BEFSR11 Cable/DSL Router Problems


The problem only exists with the switch in the picture.  I can connect
directly to the router and everything's fine.  I used my old hub
instead of the switch for about 10 hours today without a single
incident.

About 90 minutes ago, I tried putting the switch back in (removing the
hub).  I toggled the MDI/MDIX setting on the switch to make port 16
work as a normal port.  Everything seemed to work fine for almost an
hour.  Then I had a problem again.  This time, it was a little
different.  Previously, I've completely lost connectivity to the router
from anywhere on the LAN.  This time, the router was alive and
responding, but had lost its WAN IP address.

I suppose it's possible that this last problem is unrelated.  It seems
suspicious that it happened less than an hour after I put the switch
back in the mix, though.

I restarted the router and it managed to get a new IP address and now
everything has been okay for the last 30 minutes or so.  I'm not
convinced that it won't happen again, though.


Re: Linksys EZXS16W Switch + BEFSR11 Cable/DSL Router Problems


After reading a little bit what I can add is to use a Straight-Through
cable, which you said you were using, from the Router LAN port to port 1 of
the EZ16.   The port # really doesn't matter with the exception of port 16.
Set the Router switch to Straight-Through since that is the type cable being
used.  Port 1 of the EZ16 should detect it is being used for uplinking from
another device.  It all should work from there.

I use a similar setup except I am using a more robust router and am using
the EZ8 Linksys switch instead of the 16.  I do not see the issues you are
seeing.  I do wonder if there could be some kind of hardware compatability.
You might consider a firmware update for the Router depending on version
being used.



Re: Linksys EZXS16W Switch + BEFSR11 Cable/DSL Router Problems


I'm currently running firmware version 1.44.2 on the router, as I've
had problems with 1.46.2 (latest) and 1.46.  Those versions seems to
have weird http connectivity issues.  I rolled back to 1.44.2 because I
heard from others that it was the most stable.

I'm wondering if now I'm running into the DHCP renewal issues that
others have discussed.  (In fact, I'd swear I saw you discussing it
over on dslreports.com a while back!)

I'm keeping an eye on it.  We'll see what happens.

Quoted text here. Click to load it


Re: Linksys EZXS16W Switch + BEFSR11 Cable/DSL Router Problems


Quoted text here. Click to load it

My next thought was to get you to do some more checking the next time it
happened.  Instead of rebooting router just disconnecting the EZ16 switch
and then hooking a system directly to the router and see if it get's issued
a LAN IP and see if you can then access the router WEB interface.  I'd be
curious if it was dropping it's WAN connection or not.  The problem is that
if you cannot access the router it's kind of hard to tell what exactly is
going on with the router.  You might try setting a static IP in the system
you directly connect and try and access that way.

I used to use a BEFSR41 v2 years ago.  After it started develping issues
with the 1.45.7 firmware as well as a whoel buttload of others I finally
moved away from that router.  Mine currently has the 1.46.2 but sits on a
shelf.  I was thinking the DHCP issue was fixed with this latest version.



Re: Linksys EZXS16W Switch + BEFSR11 Cable/DSL Router Problems


Jbob wrote:

Quoted text here. Click to load it

Out of curiosity, what kind of router do you have now?


Re: Linksys EZXS16W Switch + BEFSR11 Cable/DSL Router Problems


Quoted text here. Click to load it

Linksys RV082.



Re: Linksys EZXS16W Switch + BEFSR11 Cable/DSL Router Problems


This AM when I checked the router, it had counted down to 0:00:00
without trying to renew the IP.  The connection was still up, which is
weird, but I had to manually renew via the web interface.  Now it's
counting down from six hours.

I heard that 1.46.2 fixes the DHCP renewal, but it causes other
problems for me.  (Like what this guy describes:
http://www.versiontracker.com/php/feedback/article.php?story=20041205115948509#36468 )

So, it sounds as if I'm stuck with DHCP renewal problems for now.  I
don't see Linksys updating this firmware any time soon.

Grrr....

Thanks for your help.

Quoted text here. Click to load it


Re: Linksys EZXS16W Switch + BEFSR11 Cable/DSL Router Problems


About 10 minutes ago the router became totally inaccesible from the LAN
again. I tried disconnecting the switch and connecting right to the
router, but still nothing.  Can't even see the web admin interface.

Powering off / on the router fixes it again.

I took the switch back out since this problem only happens when it's in
there.  The hub is back in for now.

Not sure if the DHCP renewal is still a problem since the router
decided to die about 30 minutes before the renewal was needed.

josemonkey@gmail.com wrote:
Quoted text here. Click to load it
http://www.versiontracker.com/php/feedback/article.php?story=20041205115948509#36468 )
Quoted text here. Click to load it


Re: Linksys EZXS16W Switch + BEFSR11 Cable/DSL Router Problems


I'm curious now whether this is a new issue that has just cropped up and
really had nothing to do with the new switch.  Guess it'll take some more
troubleshooting to help you determine just where and what the problem is.  I
really just don't see a switch or hub causing the router to lose it WAN IP.
I can see the switch losing connectivity to the router though but it appears
we'll have to wait to see just what is going on

btw I moved up from a BEFRS41 to a BEFSX41 router.  It too has it's share of
firmware issues from Linksys.



Re: Linksys EZXS16W Switch + BEFSR11 Cable/DSL Router Problems


Actually, the problem that the switch seems to cause is not losing the
WAN address.  It creates a situation where the router is unreachable
from the LAN.  Only a power cycle of the router fixes it.

I agree it seems strange that the switch would do this.  But this never
happened before when usin the hub, and I've had it for years.  I've
tried hooking up the switch a few times, and within 24 hours (sometimes
only 30 min), the problem manifests itself.  It's never happened with
the hub there.

Now, I can't explain that, but that tells me there's some connection.

(The DHCP renewal problem seems to happen no matter what, though.)

Jbob wrote:
Quoted text here. Click to load it


Re: Linksys EZXS16W Switch + BEFSR11 Cable/DSL Router Problems


Update: The router managed to renew its WAN IP all by itself.  Not sure
why it worked.  I did a hard reset this AM after it failed to renew the
address, but since then I also had the other problem because I had put
the switch back in.

Ugh.  I'd be thrilled if the router would continue to do the DHCP
renewal without incident, but I still don't understand this issue that
happens when I hook up the switch.

I'm sticking with the hub for now.  If it behaves for a few days, i'll
try putting the switch back in and see what happens.

On Nov 22, 4:34 pm, josemon...@gmail.com wrote:
Quoted text here. Click to load it


Re: Linksys EZXS16W Switch + BEFSR11 Cable/DSL Router Problems


UPDATE: Once again, the router managed to renew its WAN IP all by
itself.  The hub is still in place. I know that as soon as I put the
switch back in there will be trouble. . .


Re: Linksys EZXS16W Switch + BEFSR11 Cable/DSL Router Problems


josemonkey@gmail.com wrote:

Quoted text here. Click to load it

Just for a try:
What happens when you leave the hub in and add the switch after the hub ?


Re: Linksys EZXS16W Switch + BEFSR11 Cable/DSL Router Problems


I suppose I could try that, just to see what happens.

For right now, I'm leaving the hub in and the switch out to make sure
things are stable for a few days.  I want to be sure that the problem I
described before (losing connectivity to the router from the LAN) is
really only happening when the switch is plugged in.

The hub has been in for about 19 hrs, and still no problems.  The
router even renewed its WAN address at least twice.  I'm certain that
as soon as the switch is put back in, the problem will come back.

$Bill wrote:
Quoted text here. Click to load it


Re: Linksys EZXS16W Switch + BEFSR11 Cable/DSL Router Problems


Everything seemed fine with the hub for about 21-ish hours, so i just
put the switch back in.  I tried using a different port (not port 16)
to eliminate any possibility that it's an uplink port issue.

So, to clarify, the setup was:

Networked PCs
 |
 |
**EFAH08W Hub**
 |
 |
(straight thru cable on port 8 of hub)
 |
 |
(into LAN port of router)
 |
 |
BEFSR11 Router
 |
 |
Cable modem

. . . and NOW it is:

Networked PCs
 |
 |
**EZXS16W Switch**
 |
 |
(straight thru cable on port 15 of switch)
 |
 |
(into LAN port of router)
 |
 |
BEFSR11 Router
 |
 |
Cable modem

Let's see if the weird issues come back.


Re: Linksys EZXS16W Switch + BEFSR11 Cable/DSL Router Problems


Well, the switch has been back in for almost 24hrs, and so far I've
only had one problem.  The router failed to renew its IP address once,
but I didn't lose my WAN connection and I didn't lose connectivity to
the router from the LAN, either.

Since then, the router renewed the WAN address at least twice.

So, I'm cautiously optimistic at this point.

Frankly, I'm not sure that anything I did really should have made a
difference . . . but whatever.


josemonkey@gmail.com wrote:
Quoted text here. Click to load it


Site Timeline