... | ... | @@ -238,7 +238,7 @@ There is some consultation between ITU-T and WR on the eEEC, though with |
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low priority, at the moment it seems that eEEC will not be directly
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usable with WR.
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??Authors: Javier Serrano, Maciej Lipinski, [CERN](http://cern.ch??)
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Authors: Javier Serrano, Maciej Lipinski, [CERN](http://cern.ch)
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### Q: Can I increase the PTP packet rate in the WR Switch?
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... | ... | @@ -269,7 +269,7 @@ Announce-message packet rate to 8 pkts/s). The log\_value is software |
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limited to a minimum value of -4. Please note that these values are
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global and all your WR Switch ports will have the packet rate modified.
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??Author: Adrian Savencu, [OPNT](http://www.opnt.nl??)
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Author: Adrian Savencu, [OPNT](http://www.opnt.nl)
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### Q: Can the WR Switch handle Jumbo frames?
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... | ... | @@ -347,8 +347,8 @@ A: Yes, the WR Switch has a DHCP client software. Please remember |
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though, if you modify the startup scripts to assign a static IP address,
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the configuration received from the DHCP server will be overwritten.
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??Author: Grzegorz Daniluk,
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[CERN](http://cern.ch??)
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Author: Grzegorz Daniluk,
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[CERN](http://cern.ch)
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### Q: Is it possible to forward received UDP packets to the switch's Management (copper) Ethernet port?
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... | ... | @@ -357,9 +357,9 @@ is strongly discouraged as it can have very bad consequences including |
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switch crashing. Therefore, this is not supported and no information on
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how to do it will be provided by the switch developers.
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??Authors: Alessandro Rubini,
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Authors: Alessandro Rubini,
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[Gnudd](https://www.ohwr.org/companies/gnudd), Maciej Lipinski,
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[CERN](http://cern.ch??)
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[CERN](http://cern.ch)
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### Q: Why on older switches (software versions up to [v3.1](https://www.ohwr.org/news/29)) it was possible to access (e.g.: ssh) WR switch through any port (wr0-wr17 and management) and in the newer software releases (from software version [v3.3](https://www.ohwr.org/news/32)) it is not?
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... | ... | @@ -401,8 +401,7 @@ It is something you might do for some reasons in the lab or while |
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testing systems, but it should definitely be avoided in a deployed
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network.
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??Authors: Maciej Lipinski,
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[CERN](http://cern.ch??)
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Author: Maciej Lipinski,[CERN](http://cern.ch)
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### Q: I want to modify some files in the switch but I can't because the filesystem is mounted as Read-Only\! How can I set it as Read/Write?
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... | ... | @@ -420,8 +419,8 @@ mode |
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Starting from v4.0 we use the ramdisk and UBIFS. The filesystem is
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mounted R/W and the commands above are no longer needed.
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??Authors: Benoit Rat, [Seven
|
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Solutions](http://www.sevensols.com??)
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Authors: Benoit Rat, [Seven
|
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|
Solutions](http://www.sevensols.com)
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### Q: What is the ssh root password to access WR switch through the management port ?
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... | ... | @@ -448,8 +447,8 @@ Then reboot a switch. |
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If your switch does not have an access to the Internet, download the
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leap-seconds.list file on a different machine and copy it via e.g. ssh.
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??Author: Adam Wujek,
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[CERN](http://cern.ch??)
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Author: Adam Wujek,
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[CERN](http://cern.ch)
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### Q: How can I see statistics about Ethernet Frames forwarded by the WRS?
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... | ... | @@ -463,8 +462,8 @@ PTP, LLDP) that is destined to Linux CPU inside the switch. It will |
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wrsw\_pstats are described on page 14 of [WRS HDL-SW interface
|
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|
document](https://www.ohwr.org/project/white-rabbit/uploads/0e90236d5e9b48b41424dfc695d23cc4/switch_hdl-sw-v4.0.pdf)
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??Author: Maciej Lipinski, Erik van der Bij,
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[CERN](http://cern.ch??)
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Author: Maciej Lipinski, Erik van der Bij,
|
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[CERN](http://cern.ch)
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### Q: Why WR Switch is not able to get path to dot-config via DHCP when dnsmasq is used as DHCP server?
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... | ... | @@ -498,8 +497,8 @@ also option 52 (which it doesn't): |
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No such problems with dhcpd were seen.
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??Author: Adam Wujek,
|
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[CERN](http://cern.ch??)
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Author: Adam Wujek,
|
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[CERN](http://cern.ch)
|
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-----
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... | ... | @@ -531,8 +530,8 @@ Otherwise you need to re-generate the ssh keys by executing: |
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dropbearkey -t dss -f dropbear_dss_host_key
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dropbearkey -t rsa -f dropbear_rsa_host_key
|
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|
??Author: Benoit Rat, [Seven
|
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|
Solutions](http://www.sevensols.com??)
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Author: Benoit Rat, [Seven
|
|
|
Solutions](http://www.sevensols.com)
|
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|
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|
### Q: Why my changes in /etc/\* files are not visible after a reboot (after updating the firmware to v4.x)?
|
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|
... | ... | @@ -544,8 +543,8 @@ about the code layout of the WR Switch in the [Building and flashing |
|
|
manual for v4.0
|
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|
release](https://www.ohwr.org/project/white-rabbit/uploads/d9f33d5629092f4453ddd4b310297b9a/wr-switch-sw-v4.0_build.pdf)
|
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|
??Author: Grzegorz Daniluk,
|
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|
[CERN](http://cern.ch??)
|
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|
Author: Grzegorz Daniluk,
|
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|
[CERN](http://cern.ch)
|
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|
### Q: When upgrading the 4.x switch to v5.0 I see an error "/wr/bin/sdb-read: can't load library 'libm.so.1'"
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... | ... | @@ -573,7 +572,7 @@ Despite there is a message printed: |
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|
there is no change done to the hwinfo partition (/dev/mtd5).
|
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|
??Author: Adam Wujek, [CERN](http://cern.ch??)
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Author: Adam Wujek, [CERN](http://cern.ch)
|
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|
### Q: After upgrade a switch to firmware v5.0, it does not boot via NFS
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|
... | ... | @@ -581,8 +580,8 @@ A: Please update "`bootargs`" variable in your boot script. |
|
|
With the kernel 2.6.39 we suggested use of "`root=nfs`", but this
|
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|
convention is no more supported in Linux, please use "`root=/dev/nfs`".
|
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|
??Author: Adam Wujek,
|
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|
[CERN](http://cern.ch??)
|
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Author: Adam Wujek,
|
|
|
[CERN](http://cern.ch)
|
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|
|
### Q: Is it possible to flash a switch via test interface using the scripts under wr-switch-sw/build/flash-wrs?
|
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|
|
... | ... | @@ -596,7 +595,7 @@ versions of a switch there were problems to flash directly via USB. |
|
|
Please note that there was a bug in the firmware v5.0 \[2\], which may
|
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|
affect the procedure.
|
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|
|
??Author: Adam Wujek, [CERN](http://cern.ch??)
|
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|
Author: Adam Wujek, [CERN](http://cern.ch)
|
|
|
|
|
|
-----
|
|
|
|
... | ... | @@ -633,8 +632,8 @@ are impacted by this |
|
|
In this case please use a branch wr-switch-sw-v4.2-fixes from
|
|
|
wr-switch-sw repo, which contains needed fixes.
|
|
|
|
|
|
??Author: Adam Wujek,
|
|
|
[CERN](http://cern.ch??)
|
|
|
Author: Adam Wujek,
|
|
|
[CERN](http://cern.ch)
|
|
|
|
|
|
### Q: Firmware 4.2 (buildroot) does not compile on Ubuntu 16.04 (perl problem)
|
|
|
|
... | ... | @@ -651,8 +650,8 @@ of the buildroot, but with the host version of perl on a host system. |
|
|
In this case please use a branch wr-switch-sw-v4.2-fixes from
|
|
|
wr-switch-sw repo, which contains needed fixes.
|
|
|
|
|
|
??Author: Adam Wujek,
|
|
|
[CERN](http://cern.ch??)
|
|
|
Author: Adam Wujek,
|
|
|
[CERN](http://cern.ch)
|
|
|
|
|
|
-----
|
|
|
|
... | ... | @@ -679,7 +678,7 @@ front-to-back airflow. In the [White Rabbit Switch Hardware |
|
|
project](https://www.ohwr.org/project/wr-switch-hw) one can find the
|
|
|
[WRS - Stress Tests report](https://www.ohwr.org/documents/232).
|
|
|
|
|
|
??Author: Benoit Rat, [Seven Solutions](http://www.sevensols.com??)
|
|
|
Author: Benoit Rat, [Seven Solutions](http://www.sevensols.com)
|
|
|
|
|
|
### Q: Does the switch comply to CE regulations (EMC)?
|
|
|
|
... | ... | @@ -695,7 +694,7 @@ at 125MHz, but the gateware have been modify during the production. |
|
|
Therefore some old box are still labeled with 125 MHz. On the new box,
|
|
|
you will find this output labeled as CLK (OUT).
|
|
|
|
|
|
??Author: Benoit Rat, [Seven Solutions](http://www.sevensols.com??)
|
|
|
Author: Benoit Rat, [Seven Solutions](http://www.sevensols.com)
|
|
|
|
|
|
### Q: Is it possible to generate 10MHz clock from WR Switch?
|
|
|
|
... | ... | @@ -711,8 +710,8 @@ can generate 10MHz using the |
|
|
with a carrier ([SPEC](https://www.ohwr.org/project/spec) or
|
|
|
[SVEC](https://www.ohwr.org/project/svec)).
|
|
|
|
|
|
??Author: Grzegorz Daniluk,
|
|
|
[CERN](http://cern.ch??)
|
|
|
Author: Grzegorz Daniluk,
|
|
|
[CERN](http://cern.ch)
|
|
|
|
|
|
### Q: in the repository there are different branches. Which one should I take?
|
|
|
|
... | ... | @@ -745,8 +744,8 @@ fixed for v4) |
|
|
There is also an [issue](https://www.ohwr.org/work_packages/869) in
|
|
|
wr-switch-hdl project regarding this problem.
|
|
|
|
|
|
??Author: Maciej Lipinski,
|
|
|
[CERN](http://cern.ch??)
|
|
|
Author: Maciej Lipinski,
|
|
|
[CERN](http://cern.ch)
|
|
|
|
|
|
### Q: Which FPGA is used inside the WR Switch, Virtex 6 LX130T or LX240T?
|
|
|
|
... | ... | @@ -757,8 +756,8 @@ LX130T became to small. We have replaced the FPGA chip with LX240T which |
|
|
is larger than LX130T and has the same pinout. Currently all WR Switches
|
|
|
are produced with larger, Virtex 6 LX240T FPGA.
|
|
|
|
|
|
??Author: Grzegorz Daniluk,
|
|
|
[CERN](http://cern.ch??)
|
|
|
Author: Grzegorz Daniluk,
|
|
|
[CERN](http://cern.ch)
|
|
|
|
|
|
### Q: Has any kind of lifetime study been done on the White Rabbit Switch?
|
|
|
|
... | ... | @@ -781,8 +780,8 @@ Additionally, wrs\_dump\_shmem will report ID's in fields calib.sfp.\* |
|
|
A: From the release (4.2.1) it is possible to use wrs\_sfp\_dump to read
|
|
|
content of SFPs memory.
|
|
|
|
|
|
??Author: Adam Wujek,
|
|
|
[CERN](http://cern.ch??)
|
|
|
Author: Adam Wujek,
|
|
|
[CERN](http://cern.ch)
|
|
|
|
|
|
-----
|
|
|
|
... | ... | |