Re: [WISPA] Linux command question
On Sat, Dec 15, 2007 at 09:45:50AM -0600, Mike Hammett wrote: Would the following command remove ../../Templates/ from all files in the /home/devicsil/public_html/Templates directory? for file in ls /home/devicsil/public_html/Templates ; do sed -e 's/..\/..\/Templates\///g' $file echo done That will remove all instances of somecharactersomecharacter/somecharactersomecharacter/Templates/ from those files. Your sed command as written will only output the changes to stdout, which is great for debugging before you actually change the files. You also need to use backticks around the ls command so that it will be run in a subshell and it's output used in the for loop rather than looping on ls and /home/devicsil/public_html/Templates. If your sed supports the inplace argument, as in FreeBSD's sed, you can specify something like: sed -i.bak -e 's|\.\./\.\./Templates/||g' $file I think that will do what you intend to do by only changing instances of ../../Templates/ instead of, possibly, somedirectoryname/aa/Templates/, if such names are a possibility in the source files. Your original regex would have matched the later string and removed me/aa/Templates/. If your sed does not support the inplace argument, you will need to do something like: for file in `ls /home/devicsil/public_html/Templates` ; do mv $file $file.bak; sed -e 's|\.\./\.\./Templates/||g' $file.bak $file; echo : done; I haven't run that so it may have bugs. Test first and, as always, have a backup. HTH, -- Scott LambertKC5MLE Unix SysAdmin [EMAIL PROTECTED] WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Linux command question
On Sun, Dec 16, 2007 at 03:02:30AM -0600, Scott Lambert wrote: If your sed does not support the inplace argument, you will need to do something like: for file in `ls /home/devicsil/public_html/Templates` ; do mv $file $file.bak; sed -e 's|\.\./\.\./Templates/||g' $file.bak $file; echo : done; I haven't run that so it may have bugs. Test first and, as always, have a backup. I should mention, if only for the newbies who might be watching, that the above makes several assumptions about what is in /home/devicsil/public_html/Templates, including: 1) There are no files with spaces in their name. 2) There are no subdirectories. If there are we just renamed them to have a .bak extension and broke lots of stuff. 3) You don't want to change any files whose names begin with ., i.e. .htaccess and friends. If any of those assumptions are not true, you probably need to dump the for loop and use something along the lines of: find /home/devicsil/public_html/Templates/ -type f mumblemumble -print0 | \ xargs -0 mumblemumble sed mumblemumble where you might want to replace sed with a script that does the mv, sed, echo stuff, if necessary. Anyway, good luck! -- Scott LambertKC5MLE Unix SysAdmin [EMAIL PROTECTED] WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Fiber
Travis Johnson wrote: Hi, This is very true... we install a small UPS along with the switch to help with power issues... but with 70+ customers on the ring right now, we have not seen any issues. If a single customer goes down, the ring is still fully functional for everyone else. At that point, we contact that customer to find out the problem and get it resolved as quickly as possible. The only time we have had more than 1 customer down at a time is when a major power outage happens that lasts more than an hour. Since you are using GBICs have you considered using CWDM along with passive ADMs instead? Passive ADMs don't require any power and could be used at each customer location to drop a single channel of light that you plug into the GBIC. This way if a single customer's equipment goes down the rest of the ring stays up. With CWDM you only have 8 channels of light giving you a max of 8 gigs shared across your ring, but that is probably fine considering you only have 2 gigs with your current setup. -Matt WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
RE: [WISPA] Fiber
Sweet stuff.I do have Mikrotiks with Dual GigE Fiber Ports if someone is interested. Dennis Burgess www.mikrotikrouter.com -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Matt Liotta Sent: Sunday, December 16, 2007 8:24 AM To: WISPA General List Subject: Re: [WISPA] Fiber Travis Johnson wrote: Hi, This is very true... we install a small UPS along with the switch to help with power issues... but with 70+ customers on the ring right now, we have not seen any issues. If a single customer goes down, the ring is still fully functional for everyone else. At that point, we contact that customer to find out the problem and get it resolved as quickly as possible. The only time we have had more than 1 customer down at a time is when a major power outage happens that lasts more than an hour. Since you are using GBICs have you considered using CWDM along with passive ADMs instead? Passive ADMs don't require any power and could be used at each customer location to drop a single channel of light that you plug into the GBIC. This way if a single customer's equipment goes down the rest of the ring stays up. With CWDM you only have 8 channels of light giving you a max of 8 gigs shared across your ring, but that is probably fine considering you only have 2 gigs with your current setup. -Matt WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
RE: [WISPA] Fiber
Dennis, Are you a vendor member of WISPA? If so, please accept my apologies for asking, but if you are not a vendor member then you need to be for several reasons: 1. We need active vendor members since it actual vendor member funds that allow us to accomplish our goals for all WISPs across the country - not exclusively WISPA members, but it's the Reagan affect of trickle down economy :) 2. Your open advertising on list would actually be something that you sat down and thought about every quarter so that you could get the best bang for your buck and it would go to all email addys on all WISPA list servers. (Thousands?) 3. It wouldn't make you look like you are taking a cheap shot at selling your wares on WISPA lists to WISPA members. 4. If you were a paid WISPA vendor member - we wouldn't get all these emails off list from other members vendor members who have actually paid their dues to advertise their wares/services on these lists every time you try to slip one in on us/them. Some of these vendor members are no larger than your company, but they have paid their membership. Please respect the way we have things set up and uphold the rules of all the lists since that is only fair for all involved. Every time you slip one in you are really doing everyone involved with WISPA wrong. The members because you haven't paid your Vendor dues and our vendors who have paid their dues to have the privilege to do what you seem to be doing for free. What if we didn't have any vendor members and everyone would just slip an advertisement in? Where would WISPA be then? I know you have some fine gear and I can't help but believe that you would definitely benefit from a vendor membership. A picture is worth a thousand words and I have seen what you are selling and I know it works :) - - WRITE A CHECK!! I did peruse my vendor member paperwork (and the web site) to confirm that you haven't paid vendor fee's, but paperwork sometimes is not the fastest way - so if you are a vendor member please accept my apologies. Mac -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dennis Burgess Sent: Sunday, December 16, 2007 10:23 AM To: 'WISPA General List' Subject: RE: [WISPA] Fiber Sweet stuff.I do have Mikrotiks with Dual GigE Fiber Ports if someone is interested. Dennis Burgess www.mikrotikrouter.com -Original Message- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Matt Liotta Sent: Sunday, December 16, 2007 8:24 AM To: WISPA General List Subject: Re: [WISPA] Fiber Travis Johnson wrote: Hi, This is very true... we install a small UPS along with the switch to help with power issues... but with 70+ customers on the ring right now, we have not seen any issues. If a single customer goes down, the ring is still fully functional for everyone else. At that point, we contact that customer to find out the problem and get it resolved as quickly as possible. The only time we have had more than 1 customer down at a time is when a major power outage happens that lasts more than an hour. Since you are using GBICs have you considered using CWDM along with passive ADMs instead? Passive ADMs don't require any power and could be used at each customer location to drop a single channel of light that you plug into the GBIC. This way if a single customer's equipment goes down the rest of the ring stays up. With CWDM you only have 8 channels of light giving you a max of 8 gigs shared across your ring, but that is probably fine considering you only have 2 gigs with your current setup. -Matt --- - WISPA Wants You! Join today! http://signup.wispa.org/ --- - WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ --- - WISPA Wants You! Join today! http://signup.wispa.org/ --- - WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Fiber
Matt, We have not considered that, but it comes down to cost as well. We charge a $500 setup fee to get the fiber installed at the customer prem. It costs us about $1,000 to actually get the fiber installed including the Cisco switch with GBIC's. I understand the idea of CWDM and ADMs, but at the same time I see a downside. If one of the GBIC modules fails at the customer prem, they are down. With our current configuration, they would still be up and running. It would also add one more point of failure at each customer. We adopted the KISS (keep it simple stupid) principle when we started doing the fiber. We run STP on the main switch at our NOC, so really traffic only goes out one GBIC at our NOC unless there is a problem. At that point, we get email notification and using our SNMP system, we can tell exactly where the problem is and get it fixed quickly. Right now we are only moving about 50Mbps of traffic, so even only having 1Gbps of capacity should work for many, many years to come. Travis Microserv Matt Liotta wrote: Travis Johnson wrote: Hi, This is very true... we install a small UPS along with the switch to help with power issues... but with 70+ customers on the ring right now, we have not seen any issues. If a single customer goes down, the ring is still fully functional for everyone else. At that point, we contact that customer to find out the problem and get it resolved as quickly as possible. The only time we have had more than 1 customer down at a time is when a major power outage happens that lasts more than an hour. Since you are using GBICs have you considered using CWDM along with passive ADMs instead? Passive ADMs don't require any power and could be used at each customer location to drop a single channel of light that you plug into the GBIC. This way if a single customer's equipment goes down the rest of the ring stays up. With CWDM you only have 8 channels of light giving you a max of 8 gigs shared across your ring, but that is probably fine considering you only have 2 gigs with your current setup. -Matt WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Fiber
Travis Johnson wrote: Matt, We have not considered that, but it comes down to cost as well. We charge a $500 setup fee to get the fiber installed at the customer prem. It costs us about $1,000 to actually get the fiber installed including the Cisco switch with GBIC's. I understand the idea of CWDM and ADMs, but at the same time I see a downside. If one of the GBIC modules fails at the customer prem, they are down. With our current configuration, they would still be up and running. It would also add one more point of failure at each customer. Doing the ADM approach would cost about the same. You are correct that without the Cisco you can't provide protection. However, you do get greater protection for your overall network with the ADM approach. This is because 2 failed Ciscos take out all nodes between the two failed Ciscos. In the case of the ADMs, only the active Ethernet part of the device can fail, which means the individual node goes down, but not the ring. We adopted the KISS (keep it simple stupid) principle when we started doing the fiber. We run STP on the main switch at our NOC, so really traffic only goes out one GBIC at our NOC unless there is a problem. At that point, we get email notification and using our SNMP system, we can tell exactly where the problem is and get it fixed quickly. Right now we are only moving about 50Mbps of traffic, so even only having 1Gbps of capacity should work for many, many years to come. That is a smart way to go. Trying to get more sophisticated with fiber can get expensive fast. We are selling a good number of GigE circuits on our fiber ring, so we have capacity issues that precluded us from using the approach you are taking. We use a hybrid CWDM/DWDM approach. This means that initially we use CWDM for nodes until we have 4 channels in use. We make sure only to use the bottom and top 2 channels of CWDM. This then allows us to run DWDM later in the space of the middle 4 channels of CWDM. This is all done by popping in different cards with either passive CWDM filters or active DWDM electronics. -Matt WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Fiber
If the drop is 550', you can use Multi mode and the termination is considerably cheaper. As for individual strands, there is probably a balance where it makes sense to not necessarily drop 128 strands, but do something more than 6 strands. John -Original Message- From: George Rogato [mailto:[EMAIL PROTECTED] Sent: Saturday, December 15, 2007 04:04 PM To: 'WISPA General List' Subject: Re: [WISPA] Fiber Thanks for offering to help, Here's what I have. My noc is across a creek from a water tank that I have a dozen ap's on. So I have to do aerial to get there. I want to use an aerial cable that has a lot of fibers in it. So I can put each radio on it's own fiber and not have a switch at the tank. I also want to extend the rest of the unused fibers out to do a fiber to the premises roll out. What I'm not sure is what type or size of fiber to pull, considering I want to break it out and go down the street. I'm assuming single mode and I'm thinking this drop is short, 550', I can use like 128 strands. I am assuming going up the street to the homes, It would be a PON network. So I'm not sure of the fiber, or the network equipment behind it. George Scott Reed wrote: I may not get you all the answers, but here are some questions you need to answer to get answers: How far do you want to go? What kind of data and data rates are you looking for? What equipment is at the ends? Hanging from poles, buried, etc.? George Rogato wrote: Anyone do fiber? I'm wondering where I should be looking for good pricing on some aerial fiber. I don't know very much about fiber at all, so I also need some advice on what fiber I should be using as well as what connectors. Anyone have any experience? Thanks -- George Rogato Welcome to WISPA www.wispa.org http://signup.wispa.org/ WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
Re: [WISPA] Fiber
Matt do you have any product numbers for the equipment your using? George Matt Liotta wrote: Travis Johnson wrote: Matt, We have not considered that, but it comes down to cost as well. We charge a $500 setup fee to get the fiber installed at the customer prem. It costs us about $1,000 to actually get the fiber installed including the Cisco switch with GBIC's. I understand the idea of CWDM and ADMs, but at the same time I see a downside. If one of the GBIC modules fails at the customer prem, they are down. With our current configuration, they would still be up and running. It would also add one more point of failure at each customer. Doing the ADM approach would cost about the same. You are correct that without the Cisco you can't provide protection. However, you do get greater protection for your overall network with the ADM approach. This is because 2 failed Ciscos take out all nodes between the two failed Ciscos. In the case of the ADMs, only the active Ethernet part of the device can fail, which means the individual node goes down, but not the ring. We adopted the KISS (keep it simple stupid) principle when we started doing the fiber. We run STP on the main switch at our NOC, so really traffic only goes out one GBIC at our NOC unless there is a problem. At that point, we get email notification and using our SNMP system, we can tell exactly where the problem is and get it fixed quickly. Right now we are only moving about 50Mbps of traffic, so even only having 1Gbps of capacity should work for many, many years to come. That is a smart way to go. Trying to get more sophisticated with fiber can get expensive fast. We are selling a good number of GigE circuits on our fiber ring, so we have capacity issues that precluded us from using the approach you are taking. We use a hybrid CWDM/DWDM approach. This means that initially we use CWDM for nodes until we have 4 channels in use. We make sure only to use the bottom and top 2 channels of CWDM. This then allows us to run DWDM later in the space of the middle 4 channels of CWDM. This is all done by popping in different cards with either passive CWDM filters or active DWDM electronics. -Matt WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/ -- George Rogato Welcome to WISPA www.wispa.org http://signup.wispa.org/ WISPA Wants You! Join today! http://signup.wispa.org/ WISPA Wireless List: wireless@wispa.org Subscribe/Unsubscribe: http://lists.wispa.org/mailman/listinfo/wireless Archives: http://lists.wispa.org/pipermail/wireless/
