Try to isolate the physical location of the problem. For instance, if one location of a building is having network troubles but another isn’t, it may point to a specific switch. A good example is my recent changes to some fiber networking connections. I only added a switch in a server room so I wasn’t prepared for where the problem actually occurred. Data was still traveling across all connections, from computer to switch1 to switch2 to server or from phone to switch1 to switch2 to phone server (VoIP), but everything seemed dog-slow and all the phones sounded like a bad cell phone. Obviously with fiber, the speed should be very fast. After most of a friday afternoon, some time on Saturday morning, and a Sunday evening, I finally figured out the problem. If I had followed my own tip, I would have noticed the problem occurred only when flowing through switch1. Even though a link light on switch2 indicated a good connection to switch1, a physical look at switch1 indicated no link. After a reboot of switch1, everything came back up to speed.
Archive for July, 2004
Network Troubleshooting Tip
Monday, July 26th, 2004Catch-Up
Thursday, July 1st, 2004Missed a couple of DnD sessions so I’ll just recap them.
- previous/previous session recap -
After spending time in queenstown resting (see previous blog entry), the party decides to follow through with the information the sages gave them. They chose to proceed to the desert where a large gate was being built. The magic from Methkarten’s school gave us quick teleport passage to the desert. We are introduced to a new character Da’ud al’Shidda who has seen the gate and had his tribe slaughtered because of it. He quickly agrees to show us the location. On the trek there, we encounter a nomadic tribe and are greeted fairly and spend a few minutes talking with the head of the tribe in the main tent. Outside screaming is heard. The party heads outside only to find itself face to face with a gargantuan scorpion. After a fairly quick battle, and almost 2 deaths in the party, the scorpion is dispatched. After much thanks for saving the tribe, the head of these nomads tells Avriyael that he has seen a bow with the same symbol as her circlet. Very curious, the party sends a magical message to the bearer of the bow and teleports a few members to talk. During the discussion that ensued, a huge titan (the sultin of the desert) enters into a battle in the distance. The battle is many miles away, but the titan is clearly visible and clearly turns the tide of battle in his favor. Discussions continued with the owner of the bow and it was determined that the party must destroy the source of power for the gate (found to be a “Titan” gate) and return. Then we would barter Avriyaels current bow and some armor made from the scorpion for the new bow. Teleporting back to the party and continuing, with a minor battle with some guards, till we could view the gate, temple, and an encampment of tents in the distance ended the session.
- end session -
- previous session -
Being very impatient, and not waiting for the rest of the party, Methkarten decides to head straight towards the gate/temple. He quickly finds himself stuck in quicksand to his neck. Quick thinking by the party rescues him and Vystal is able to guide the party the rest of the way through the quicksand. Avriyael notices something strange about the the encampment, but isn’t able to pick up exactly what it was (basically the whole thing is a trap, but she rolled too low on her military tactics check to determine that). Approaching the temple entrance revealed a few guards that had to be dealth with. Everything still seemed too easy. We were to find out that was for a reason. Entering the temple cause two dread wraiths to appear. Isthmia figured it would be an easy turning. Unfortunately, a low roll on a turn check caused no problems to the dread wraiths, but seeing her as their biggest threat quickly attacked. Isthmia was no match for two dread wraiths and fell in one round. The rest of the party dispatched the wraiths, but the toll was hard to swallow. Then, without much rest, the party’s arch-nemesis Perisha appears with a few characters by her side. She acts very much like the emperor in Empire Strikes Back “witness this fully operation gate.” We look outside and see what we thought to be a titan gate (more on the thought to be titan in a moment) start to pulsate with dark light and magic. The battle quickly grows sour when a wall of force isolates the fighters inside the temple away from the spell casters outside. With only 1/2 the party in the battle, we thought all was lost. Thogar went down and the battle seemed over when Vystal pulled out a virtual miracle. He summoned a huge earth elemental and grappled Perisha. With only 3hp left, Perisha teleports out of the battle to safety. Just prior to that, the spell casters had all gotten into the temple. We were hoping for a reprieve when the party notices a huge shadowy figure appearing from the gate. This was obviously no titan gate. With little time to spare, and two more dread wraiths appearing, the party teleports back to Avriyaels keep. Licking their wounds, the party discusses their next move. It is determined that research is required to find out what this gate is. We also determine that the “Titan” gate may still exist somewhere else because a previous vision showed the temple to be next to a large lake, but there was no lake to be found near this shadow gate. Time is taken to visit Balance (sp?) to get Isthmia resurrected and to find out more information. Balance would be the first nation to be attacked from the desert if a shadow/undead army appears. Avriyael discusses trade issues with the King, but feels it is not right to tell him about the gate at this moment. She agrees with one of the heads of the training academy that Lord Tyronne (a character from a previous campaign, now Lord General Tyronne of Umbria) is a better person to inform. The head of the academy promises to get a word to Lord Tyronne and hopes he will be at Carth Balance (the capitol) within a week. The head of the academy also urges the party not to discuss the gate with the local clergy (whose head is a man of great power and could disrupt the balance of the government in the region). Avriyael also determines this to be a good course of action and mentions nothing while getting Isthmia resurrected.
- end session -
Corporate Anti Open Source
Thursday, July 1st, 2004Just a little rant, I’m starting to get really ticked at businesses with an anti-open source attitude. Most of the attitude stems from a complete lack of understanding of how open source works. I have to deal with people who “just can’t understand why people would give software away.” There is also the attitude, “you get what you pay for.” Well, you know what? That is BS. I believe some of the best software I have ever dealt with is open source. Code is clean, interfaces are well thought-out, bugs are fixed quickly, etc. etc. Working in a proprietary shop has really made me think about my ideals/morals about software, and my take is this:
I will support open source with whatever means I have available to me.
Learning something new
Thursday, July 1st, 2004In my rummage through bind and DNS, I made a simple change. I had a two records. The first was ftp. and the second mail. They were both pointing to the same IP address, but mail. was a CNAME for ftp. I needed to change mail. to be the A record and the ftp. to be the CNAME. Simple changes to the configuration, viola. Oops. After a few hours, when the TTL had expired, mail. and ftp. were both considered CNAMEs within our resolution DNS server. It would loop back and forth and simply give no IP address. Simple fix of removing the cache, and when both records expire over the internet the problem will be fixed, but still. Live and learn