Does mining require port forwarding?/What causes these two errors?

[pekv2]

As stated in the title, Does mining require port forwarding? What causes these two errors?

Also, should the port that is being used for mining be manually opened in Comodo free firewall?

I am trying to accomplish elimination of these two errors below

Code:

Problems communicating with bitcoin RPC
long poll: IO error

The errors occur in the Console Tab of GUIMiner.

I believe it is on my end as I tried two different pools in amount of 12 hours each, I received these two errors countless times.

I am a generous donator/tipper. Please don't foul up my thread if you don't have a solution, or use unnecessary comments that will not help, thank you.

Modem: Motorola SB6120
Router: Linksys E4200
Windows 7 x64 Service pack 1.
Catalyst 11.8
GUIMiner - v2001-08-24 poclbm Flags -v -w128 -f 25
Sapphire 5830 @ 1015 Mhz Core, 300Mhz Memory.
XFX 5830 @ 1015 Mhz Core, 600Mhz Memory.

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[pekv2]

Bump, anyone?

[deslok]

i haven't had to port forward my miners, but i don't use that firewall, with any firewall you're going to have to open the ports the miners are using

[pekv2]

i haven't had to port forward my miners, but i don't use that firewall, with any firewall you're going to have to open the ports the miners are using

I just wanted to be clear as I opened them last night, on my router and software firewall, I am still receiving the errors.

Any advice you would recommend? Any advice from anyone else?

Thanks for replying Deslok .

[pekv2]

I am guessing this is normal? I've been racking my brain all day reading post after post of this problem & using google search and no one found a fix/why it happens/nothing. I cannot find an explanation why this even occurs, if I did, I might be able to fix the problem, not. But it would be nice to know what it even means.

I've even read somewhere, where some person had the same problems, and tried on two different OS's, windows & linux, different pools, and still received the exact same errors.

Could this be a result of my ISP? In the meantime, I goes bonkers!

[deslok]

i haven't had to port forward my miners, but i don't use that firewall, with any firewall you're going to have to open the ports the miners are using

I just wanted to be clear as I opened them last night, on my router and software firewall, I am still receiving the errors.

Any advice you would recommend? Any advice from anyone else?

Thanks for replying Deslok .

I'll have to check my miners consoles tonight but i don't remember seeing that error, if i did it must not impact anything other than being an irritaion

[pekv2]

I'll have to check my miners consoles tonight but i don't remember seeing that error, if i did it must not impact anything other than being an irritaion

Alright, cool. Appreciate it.

Here is a log for you or anyone that might be interested, kinda too long to post in here, and this is only for 2 hours.

http://pastebin.com/kEuVh07A

[RyNinDaCleM]

I'm leaning towards internet connection!

-It happens on multiple pools, at random times, even after a period of connectivity.
-others aren't having the same problem at said pools

These two things say it's not the pool, and the first one also says you have things set up properly to mine...when it's working!

Check your ping and run trace route to your pool! Try this!

If you have serious lag during certain (Peak?) times of the day, or many "hops" in your connection to the pool server, it could have a negative impact, causing latency in submitting shares, or even timing out due to slow connection.

[pekv2]

I'm leaning towards internet connection!

-It happens on multiple pools, at random times, even after a period of connectivity.
-others aren't having the same problem at said pools

These two things say it's not the pool, and the first one also says you have things set up properly to mine...when it's working!

Check your ping and run trace route to your pool! Try this!

If you have serious lag during certain (Peak?) times of the day, or many "hops" in your connection to the pool server, it could have a negative impact, causing latency in submitting shares, or even timing out due to slow connection.

ISP package isn't bad but it is compared to other countries. I've got a 2.0 MB/s download & 400 KB/s upload package.

Also the cable modem is a docsis 3.0 compliant and is enabled with my ISP if this matters at all.

But Slush and I spoke, something most highly is cutting out long living connection. modem/router/8 port hub, win7.

For the first 20-30 minutes it goes fine, then I get nailed with Long Pool: IO Errors & rejected.
Slush explained the reason for rejects, because of the LP error and then LP errors most highly is happening because long living connection is getting cut.

All explained here > https://bitcointalk.org/index.php?topic=1976.msg556444#msg556444

I am mining regular, LP disabled. It is running fantastic, I get like 4 stales out a few thousand shares. Wish I could say the same for LPing.

Tonight or tomorrow, I am gonna hard wire my pc directly to the modem, do some LPing, I'd like to pin point the problem.

Thanks for the traceroute link, I will use it.

[pekv2]

Alright guys, thanks a bunch.

All donations have been sent out!

Haven't had time to troubleshoot today, will be troubleshooting sometime this week.

I will post the cause if I find it.

[DeathAndTaxes]

Try removing your hub and router (just as a test).  Connect one rig directly to the modem and run it for an hour (or however long it usually takes for the problem to occur).  If the problem goes away my guess is that it is your router.  Your router is killing/dropping /corrupting the long poll connection. 

The good news is if the problem goes away the fix is easy just get a newer/better router.  Buy somewhere w/ good return policy in case you have to try a couple.

If the problem persists then it may just be something to do w/ your ISP (or anything up the chain between your modem and internet backbone) and sadly outside your ability to fix.    At my old house when it would rain sometimes my internet connection would get real bad (lots of dropped packets).  I ended up plugging my modem (connected to UPS battery) into the cable box (junction of all cable lines for neighborhood) which happened to be in my backyard.  Problem persisted there which told me it was something in the coax network.  Maybe a bad splice, or water dripping onto a circuit somewhere.  Problem happened like clockwork for 6 months.  Then one day it went away.  Likely the cable company never figured it out they just happened to fix/replace the component by luck and resolved the issue