HECnet

hecnet@lists.dfupdate.se

15589 discussions

by bqt＠softjar.se

On 2014-09-16 06:56, Cory Smelosky wrote: On Mon, 15 Sep 2014, Mark Pizzolato - Info Comm wrote: On Monday, September 15, 2014 8:18 PM, Cory Smelosky wrote: Evening, I've been trying to netboot ULTRIX today and I have gotten nowhere. Works fine in SIMH! The kernel output says my DELQA is in DEQNA-LOCK mode despite any changes made to the switches...is this Ultrix behaviour or do I have 2 bum DELQAs? I wouldn't be too concerned about this detail, but if you want to worry about it, see if you can get a different output when running under SIMH. Alright. FYI: This is Ultrix 4.0. It appears to stop at printing what the time has been set to. I don't recall what the sequence of output produced at boot time is (maybe you capture that and tell us), but one thing to look at would be proper sequencing of the Qbus bus grants. What type of chassis/backplane are you using and what devices are plugged into the bus and what slots are they in?? BA123. 5 4 3 2 1 N D R R P 5 4 3 2 1 E D R R P N = NIC, D = DHV11, R = RAM, P = Processor, E = Emprt. All slots after are empty Hum. Hard to say for sure, but this might be a classical case of you having the NIC in the wrong place. Move it over to the "E" side... Johnny -- Johnny Billquist || "I'm on a bus || on a psychedelic trip email: bqt at softjar.se || Reading murder books pdp is alive! || tryin' to stay hip" - B. Idol

11 years, 4 months

ULTRIX on VAX

by Mark＠infocomm.com

On Monday, September 15, 2014 8:18 PM, Cory Smelosky wrote: Evening, I've been trying to netboot ULTRIX today and I have gotten nowhere. Works fine in SIMH! The kernel output says my DELQA is in DEQNA-LOCK mode despite any changes made to the switches...is this Ultrix behaviour or do I have 2 bum DELQAs? I wouldn't be too concerned about this detail, but if you want to worry about it, see if you can get a different output when running under SIMH. FYI: This is Ultrix 4.0. It appears to stop at printing what the time has been set to. I don't recall what the sequence of output produced at boot time is (maybe you capture that and tell us), but one thing to look at would be proper sequencing of the Qbus bus grants. What type of chassis/backplane are you using and what devices are plugged into the bus and what slots are they in?? - Mark

11 years, 4 months

FYI - Guys, I'm back from the desert, areas 8 and 47 are alive again...

by jg＠jordi.guillaumes.name

El 08/09/2014, a les 23.20, Sampsa Laine <sampsa at mac.com> va escriure: Just thought I'd let you know that CHIMPY:: and HILANT:: are finally back up again, had some hardware trouble with my hosting box, but was stuck in the Sinai desert... All is well now, and CHIMPY, GORVAX and HILANT are back online.. sampsa Hello, desert man! Hve you changed your IP addresses? My multinet links to GORVAX and SG1 are both down at this moment. Jordi Guillaumes i Pons jg at jordi.guillaumes.name HECnet: BITXOV::JGUILLAUMES

11 years, 4 months

FYI - Guys, I'm back from the desert, areas 8 and 47 are alive again...

by mark＠wickensonline.co.uk

Well done Sampsa. Your life is still an enigma to me - but it sounds fun (for the most part!) M. On 08/09/14 22:20, Sampsa Laine wrote: Just thought I'd let you know that CHIMPY:: and HILANT:: are finally back up again, had some hardware trouble with my hosting box, but was stuck in the Sinai desert... All is well now, and CHIMPY, GORVAX and HILANT are back online.. sampsa

11 years, 4 months

FYI - Guys, I'm back from the desert, areas 8 and 47 are alive again...

by sampsa＠mac.com

Just thought I'd let you know that CHIMPY:: and HILANT:: are finally back up again, had some hardware trouble with my hosting box, but was stuck in the Sinai desert... All is well now, and CHIMPY, GORVAX and HILANT are back online.. sampsa

11 years, 4 months

Network change stuff

by b4＠gewt.net

Hello all, Hey Brian...in the next week or so I'll be simplifying the tunnel and moving to a (mostly) static IP through cable. I will also be replacing the current DECnet router (a Cisco 2524) with a much more recent 1841 running IOS 15.1. ;) Maybe tftp will work now? ;););) -- Cory Smelosky http://gewt.net Personal stuff http://gimme-sympathy.org Projects

11 years, 6 months

Adjacencies Keep Bouncing

by robert.jarratt＠ntlworld.com

Ah, the changes once per second would explain those sequences one second apart coming from 8.400. I had not noticed that in the specs. I guess those updates could be coming because 8.400 is not seeing some packets (or they are being delayed), so it is changing its mind about the liveness of some adjacencies and so sending out updates. My router does not send updates as they change, it waits for the hello timer. As for my pacing of the Level 1 Router updates, the spec does anticipate some issues because it wants you to stagger the starting point (para 6 of section 4.8.1). My pacing should not affect other nodes, the problem seems to occur when I *send* a lot of packets all at once, it seems to affect the receive side. If other nodes send me lots of updates in a burst, that seems to be OK. Regards Rob From: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] On Behalf Of Paul_Koning at Dell.com Sent: 30 June 2014 21:56 To: hecnet at Update.UU.SE Subject: Re: [HECnet] Adjacencies Keep Bouncing A few notes below paul On Jun 29, 2014, at 5:04 AM, Robert Jarratt <robert.jarratt at ntlworld.com> wrote: I think this was discussed not too long ago, but I can t find the email thread. Sorry, this is quite a long email. ... So here are some interesting things about the above information. 1. I am supposed to send out the Ethernet Router Hello every 15 seconds. From my router log, that is exactly what happens (at :18, :33, :48 etc). However the packet sniffer sees extra packets inserted. I have no idea where these packets are coming from (although my suspicion is winpcap, see later). 2. 8.400 seems to send its Ethernet Router Hello every 15 seconds, but repeats them several times at 1-second intervals. In the extract above it is repeated 3 times, then 3 times, then 5 times. The rule is that router hellos are sent every hello time, or whenever the content of the message changes (different DR, different router list, change in router priority, etc.). Hellos sent when a change occurs are limited to one per second. 3. For a node to decide to drop an adjacency (ie to exclude it from the Ethernet Router Hello message), it must fail to see an Ethernet Router Hello for 3xHello Timer (Hello Timer is 15 seconds by default, so 45 seconds). Clearly my side has sent several Ethernet Router Hello messages in that time. If this was UDP dropping packets, then I would have hoped that it would not drop my particular ones 3 times in a row over a period of 45 seconds. So, somehow, my Ethernet Router Hello messages are being dropped on their way to 8.400. However, this can t be outbound from 5.1023, because if that was the case then all my adjacencies would all go down at the same time. At any one time, only adjacency goes down. This suggests that the packet is somehow getting lost towards the end of its journey to 8.400. What kind of node is 8.400? 47.556 is another one that appears to have this problem, I see that one is SIMH. I am wondering if pcap/winpcap might be implicated here. The reason is that I noticed winpcap seems to drop incoming packets if you have sent a burst of outbound packets. In my router I was sending all the DECnet Level 1 Routing messages, all at the same time and getting some problems similar to this with a node local to my network, because my router did not see the packets coming from the other node, even though the sniffer could see them. I changed my router code to send the Level 1 Routing messages with a 1-second delay between them, and that problem went away. So, I am wondering if the remote nodes I have this problem with are SIMH nodes? Yikes. DECnet assumes that data links don t have defects like that. If you need a workaround like that, chances are things won t work anyway, because the nodes you re talking to will not do packet pacing like that. paul

11 years, 7 months

Adjacencies Keep Bouncing

by Paul_Koning＠Dell.com

A few notes below paul On Jun 29, 2014, at 5:04 AM, Robert Jarratt <robert.jarratt at ntlworld.com> wrote: I think this was discussed not too long ago, but I can t find the email thread. Sorry, this is quite a long email. ... So here are some interesting things about the above information. 1. I am supposed to send out the Ethernet Router Hello every 15 seconds. From my router log, that is exactly what happens (at :18, :33, :48 etc). However the packet sniffer sees extra packets inserted. I have no idea where these packets are coming from (although my suspicion is winpcap, see later). 2. 8.400 seems to send its Ethernet Router Hello every 15 seconds, but repeats them several times at 1-second intervals. In the extract above it is repeated 3 times, then 3 times, then 5 times. The rule is that router hellos are sent every hello time, or whenever the content of the message changes (different DR, different router list, change in router priority, etc.). Hellos sent when a change occurs are limited to one per second. 3. For a node to decide to drop an adjacency (ie to exclude it from the Ethernet Router Hello message), it must fail to see an Ethernet Router Hello for 3xHello Timer (Hello Timer is 15 seconds by default, so 45 seconds). Clearly my side has sent several Ethernet Router Hello messages in that time. If this was UDP dropping packets, then I would have hoped that it would not drop my particular ones 3 times in a row over a period of 45 seconds. So, somehow, my Ethernet Router Hello messages are being dropped on their way to 8.400. However, this can t be outbound from 5.1023, because if that was the case then all my adjacencies would all go down at the same time. At any one time, only adjacency goes down. This suggests that the packet is somehow getting lost towards the end of its journey to 8.400. What kind of node is 8.400? 47.556 is another one that appears to have this problem, I see that one is SIMH. I am wondering if pcap/winpcap might be implicated here. The reason is that I noticed winpcap seems to drop incoming packets if you have sent a burst of outbound packets. In my router I was sending all the DECnet Level 1 Routing messages, all at the same time and getting some problems similar to this with a node local to my network, because my router did not see the packets coming from the other node, even though the sniffer could see them. I changed my router code to send the Level 1 Routing messages with a 1-second delay between them, and that problem went away. So, I am wondering if the remote nodes I have this problem with are SIMH nodes? Yikes. DECnet assumes that data links don t have defects like that. If you need a workaround like that, chances are things won t work anyway, because the nodes you re talking to will not do packet pacing like that. paul

11 years, 7 months

Adjacencies Keep Bouncing

by hvlems＠zonnet.nl

My A44RTR is a Van server 3900 simh host on top of a fedora 14 Linux system. I only see occasionally an adjacency down message . Verzonden vanaf mijn BlackBerry 10-smartphone. Origineel bericht Van: Robert Jarratt Verzonden: maandag 30 juni 2014 21:46 Aan: hecnet at Update.UU.SE Beantwoorden: hecnet at Update.UU.SE Onderwerp: RE: [HECnet] Adjacencies Keep Bouncing I wouldn't exclude that possibility at all. Basically there seems to be a problem with packets getting lost somewhere between Sampsa's nodes and whatever machine he is peering with. Pcap/winpcap is a possibility based on some experience I have had with winpcap. But it would be good to hear if there is anything else that is unusual in his setup that might cause this. I am guessing that there are many other nodes on HECnet that are also SIMH, if there are, they do not bounce nearly as often. Regards Rob -----Original Message----- From: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] On Behalf Of Gregg Levine Sent: 29 June 2014 23:50 To: hecnet at update.uu.se Subject: Re: [HECnet] Adjacencies Keep Bouncing Hello! Now this is straight out into deep space, and probably aiming for a cloaked starship, but what if the problem is how the network is connected to what Sampsa runs? Sampsa how about some input from you please? ----- Gregg C Levine gregg.drwho8 at gmail.com "This signature fought the Time Wars, time and again." On Sun, Jun 29, 2014 at 12:38 PM, Johnny Billquist <bqt at softjar.se> wrote: Just a few comments... 8.400 (GORVAX) is a SIMH VAX, according to the nodename database. http://madame.update.uu.se/~bqt/nodedb?search=gorvax&field=0&sort=0 I see the same issues with GORVAX and KUHAVX (47.556) also on MIM. Both machines (and areas) are run by Sampsa. Not sure how relevant that is... I have not done any further looking at actual packets yet. I might if I find some time. But it do seem there is some kind of problem/issue here. Johnny On 2014-06-29 02:04, Robert Jarratt wrote: I think this was discussed not too long ago, but I can t find the email thread. Sorry, this is quite a long email. Here at 5.1023 I keep experiencing certain adjacencies going up and down. At the bottom of this email is an extract of several hours of my log (all times are UK local time, current GMT+1). Last night I investigated one of these, when 8.400 went down at 2014-06-28 22:04:03. I used a packet sniffer and could see that my Ethernet Router Hello message went out, with 8.400 in it, at the following times: 22:03:18 22:03:23 22:03:33 22:03:38 22:03:48 22:03:53 I did not send any Ethernet Router Hello messages in that period that excluded 8.400. Conversely, from 8.400 I received Ethernet Router Hello messages, with 5.1023 included except where noted at the following times: 22:03:28 22:03:29 22:03:30 22:03:45 22:03:46 22:03:47 22:04:03 (5.1023 missing) 22:04:04 22:04:07 22:04:08 22:04:09 22:04:25 22:04:26 So here are some interesting things about the above information. 1. I am supposed to send out the Ethernet Router Hello every 15 seconds.

11 years, 7 months

Adjacencies Keep Bouncing

by robert.jarratt＠ntlworld.com

I wouldn't exclude that possibility at all. Basically there seems to be a problem with packets getting lost somewhere between Sampsa's nodes and whatever machine he is peering with. Pcap/winpcap is a possibility based on some experience I have had with winpcap. But it would be good to hear if there is anything else that is unusual in his setup that might cause this. I am guessing that there are many other nodes on HECnet that are also SIMH, if there are, they do not bounce nearly as often. Regards Rob -----Original Message----- From: owner-hecnet at Update.UU.SE [mailto:owner-hecnet at Update.UU.SE] On Behalf Of Gregg Levine Sent: 29 June 2014 23:50 To: hecnet at update.uu.se Subject: Re: [HECnet] Adjacencies Keep Bouncing Hello! Now this is straight out into deep space, and probably aiming for a cloaked starship, but what if the problem is how the network is connected to what Sampsa runs? Sampsa how about some input from you please? ----- Gregg C Levine gregg.drwho8 at gmail.com "This signature fought the Time Wars, time and again." On Sun, Jun 29, 2014 at 12:38 PM, Johnny Billquist <bqt at softjar.se> wrote: Just a few comments... 8.400 (GORVAX) is a SIMH VAX, according to the nodename database. http://madame.update.uu.se/~bqt/nodedb?search=gorvax&field=0&sort=0 I see the same issues with GORVAX and KUHAVX (47.556) also on MIM. Both machines (and areas) are run by Sampsa. Not sure how relevant that is... I have not done any further looking at actual packets yet. I might if I find some time. But it do seem there is some kind of problem/issue here. Johnny On 2014-06-29 02:04, Robert Jarratt wrote: I think this was discussed not too long ago, but I can t find the email thread. Sorry, this is quite a long email. Here at 5.1023 I keep experiencing certain adjacencies going up and down. At the bottom of this email is an extract of several hours of my log (all times are UK local time, current GMT+1). Last night I investigated one of these, when 8.400 went down at 2014-06-28 22:04:03. I used a packet sniffer and could see that my Ethernet Router Hello message went out, with 8.400 in it, at the following times: 22:03:18 22:03:23 22:03:33 22:03:38 22:03:48 22:03:53 I did not send any Ethernet Router Hello messages in that period that excluded 8.400. Conversely, from 8.400 I received Ethernet Router Hello messages, with 5.1023 included except where noted at the following times: 22:03:28 22:03:29 22:03:30 22:03:45 22:03:46 22:03:47 22:04:03 (5.1023 missing) 22:04:04 22:04:07 22:04:08 22:04:09 22:04:25 22:04:26 So here are some interesting things about the above information. 1. I am supposed to send out the Ethernet Router Hello every 15 seconds.

11 years, 7 months

Jump to page:

2026

2025

2024

2023

2022

2021

2020

2019

2018

2017

2016

2015

2014

2013

2012

2011

2010

2009

2008

HECnet