Another Gigabit fibre thread - Mikrotik RB750Gr3

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chevrolux

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#2227474 29-Apr-2019 16:11

So got Devoli to ask Chorus the question about the reduced status and got back:

"reduced robustness not service affecting no BEC errors apparent"

So will go ahead with the router swap and see if that makes any change (i highly doubt it), and then I might just take a splicer home and re-do the splices in the ONT and ETP for fun - interesting to see if that "reduced" status goes away.

sparkz25

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#2227527 29-Apr-2019 17:26

chevrolux:

So got Devoli to ask Chorus the question about the reduced status and got back:

"reduced robustness not service affecting no BEC errors apparent"

So will go ahead with the router swap and see if that makes any change (i highly doubt it), and then I might just take a splicer home and re-do the splices in the ONT and ETP for fun - interesting to see if that "reduced" status goes away.

I highly doubt it will be the splices (been there Done that)

What does the Chorus portal say now?

bignose

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#2228070 30-Apr-2019 16:32

toejam316:

The RB750 is doing the VLAN in software on the CPU, and PPPoE is pretty intensive - I suspect the combination is that the router is getting slapped when you're testing.

the RB750gr3 is based on the same mt7621 SOC as the edgerouter-X - tagging, pppoe and nat can all be offloaded, and on the er-x with all the offloads enabled you can exceed 800mb/s (or over 900mb/s running openwrt on it)

I suspect the issue is that Mikrotik's routerOS doesn't use the off-load capability (when you've got a pile of platforms all running different SOCs I can relate to them deciding to 'do it all in software' from a maintenance stand point - but does mean they're throttling the hardware)

since the rb750gr3 is now openwrt compatible ( https://openwrt.org/toh/mikrotik/mikrotik_rb750gr3 ) you could always try running that on it to see if the speed comes up (remember to backup your routerOS license first though in case you want to revert)

openmedia

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#2257428 13-Jun-2019 14:39

bignose:

toejam316:

The RB750 is doing the VLAN in software on the CPU, and PPPoE is pretty intensive - I suspect the combination is that the router is getting slapped when you're testing.

the RB750gr3 is based on the same mt7621 SOC as the edgerouter-X - tagging, pppoe and nat can all be offloaded, and on the er-x with all the offloads enabled you can exceed 800mb/s (or over 900mb/s running openwrt on it)

I suspect the issue is that Mikrotik's routerOS doesn't use the off-load capability (when you've got a pile of platforms all running different SOCs I can relate to them deciding to 'do it all in software' from a maintenance stand point - but does mean they're throttling the hardware)

since the rb750gr3 is now openwrt compatible ( https://openwrt.org/toh/mikrotik/mikrotik_rb750gr3 ) you could always try running that on it to see if the speed comes up (remember to backup your routerOS license first though in case you want to revert)

Anyone here tried OpenWRT on the RB750GR3? I'd be interested to hear how it went compared with the stock firmware.

Generally known online as OpenMedia, now working for Red Hat APAC as a Technology Evangelist and Portfolio Architect. Still playing with MythTV and digital media on the side.

BarTender

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#2257570 13-Jun-2019 18:38

openmedia:
bignose:

toejam316:

The RB750 is doing the VLAN in software on the CPU, and PPPoE is pretty intensive - I suspect the combination is that the router is getting slapped when you're testing.

the RB750gr3 is based on the same mt7621 SOC as the edgerouter-X - tagging, pppoe and nat can all be offloaded, and on the er-x with all the offloads enabled you can exceed 800mb/s (or over 900mb/s running openwrt on it)

I suspect the issue is that Mikrotik's routerOS doesn't use the off-load capability (when you've got a pile of platforms all running different SOCs I can relate to them deciding to 'do it all in software' from a maintenance stand point - but does mean they're throttling the hardware)

since the rb750gr3 is now openwrt compatible ( https://openwrt.org/toh/mikrotik/mikrotik_rb750gr3 ) you could always try running that on it to see if the speed comes up (remember to backup your routerOS license first though in case you want to revert)

Anyone here tried OpenWRT on the RB750GR3? I'd be interested to hear how it went compared with the stock firmware.

It is guaranteed to be slower as you won't get any hardware offload.

Stick with the stock firmware unless there is some functionality you want to sacrifice the speed for.

bignose

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#2257582 13-Jun-2019 19:12

BarTender:
openmedia:
Anyone here tried OpenWRT on the RB750GR3? I'd be interested to hear how it went compared with the stock firmware.

It is guaranteed to be slower as you won't get any hardware offload.

Stick with the stock firmware unless there is some functionality you want to sacrifice the speed for.

not true - openwrt 18.06 onwards supports HWNAT on the mt7621 - my experience on the er-x was a slight increase of speed on openwrt (probably down to edgeOS being stupidly bloated), numbers I’ve seen on the rb750gr3 comparing it on openwrt to routerOS are about the same.

main gain of openwrt over routers/edgeOS - much more user friendly setup/management (downside - can’t do all the crazy esoteric stuff possible on the other two). Stability is about the same (comparing against edgeOS 1.10.x - was never silly enough to even think about 2.x)

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