Skip to main content

Posts

Showing posts from January, 2013

Synology RS3413xs+ tech notes

The newest addition to my home lab is a Synology RS3413xs+ NAS. While installing it, I came across a couple of details that I didn't know before buying it. So for other people thinking of buying this unit, here's what I found out:


If you add network interfaces in the available PCIe slot, they might be numbered _before_ the four onboard interfaces. They were in my case. So onboard 1-4 are eth2-5, and add-on interfaces 1-2 are eth0-1. the SSD cache feature only works with identical drives in the both cache slots. You can buy two 120GB SSDs, but you can't just add one 240GB SSD. Except if you configure it manually through the CLI, and want to work without Synology support. as explained in an earlier post, there's no multiple-VLAN-over-one-interface support in the GUI, but you can work around that in the CLIthe DSM web interface counts VLAN-tagged packets twice in its "Total Network" graph. The per-interface/per-bond counters are correct however. PS that looks lik…

Multiple VLANs on a Synology NAS

Synology, like other SOHO/SMB NAS vendors, touts VLAN functionality with their current DSM 4.1 software. However, the web interface just lets you specify one VLAN tag to use over each eth interface (or bond interface).
Manual approachIn the busybox environment that you can ssh into as root (after enabling ssh through the webinterface), there's all the tools you need to use multiple VLANs over one link (eth or bond), however:
First you insert the 802.1q module into the Linux kernel:
 /sbin/lsmod | /bin/grep -q 8021q || /sbin/insmod /lib/modules/8021q.koThen you add each VLAN you need to every interface (bond0 in this example)
 /sbin/vconfig add bond0 4And finally you can configure IP addresses on every interface.vlan combination (bond0.4 in this example)
 /sbin/ifconfig bond0.4 192.168.4.1 broadcast 192.168.4.255 netmask 255.255.255.0The same type of script would work on a QNAP NAS too, by the way. They offer 8021q.ko and vconfig in their commandline environment as well.
Packets from…