January 2017 - Public - talk.mikrotik.com.au

UPS Serial Cable
by Paul Julian 29 Jun '17

29 Jun '17

Hi guys, we have got some APC UPS's with the serial DB9 connections on them but need to connect them to Mikrotik RB2011 and RB1100AHx2 models. Does anybody have any suggestions on a cable to suit ? The problem is they are both setup to be the B end of the situation and not the MT setup to be the A end and the UPS as the B end. I was thinking of a gender bender but don't really want to do that if I don't have to..... Any thoughts would be appreciated. Thanks Paul

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CHR scaling CPU/Memory
by Philip Loenneker 14 Feb '17

14 Feb '17

Hi guys, We have a CHR with 2 CPUs which is really struggling. I haven't found any info on the Mikrotik website or forums about scaling of it. I am considering upgrading it to 8 CPUs. a) Is there a limit to what resources we can allocate to CHRs? b) Can you increase CPU count by simply shutting it down and allocating more in Vmware, or is there something else required? c) Is there anything else we need to be aware of? Regards, Philip Loenneker | Network Engineer | TasmaNet

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VRF and BGP
by Alex Samad - Yieldbroker 01 Feb '17

01 Feb '17

Hi Next step. I want to setup a iBGP peer and I want all the bgp routes learn and distributed to be linked to the VRF internet Seems like I have to choices /routing bgp instance I can add an instance and use routing-table. Or I can add a /routing bgp instance vrf entry after add one to /routing bgp instance but leaving routing-table as main So I want all the BGP routes received and sent to be only from vrf internet. So which one do I use ! Pro's cons. The wiki page is not that informative Alex

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scripting - old: RE: VRF - routing and default local services
by Alex Samad - Yieldbroker 29 Jan '17

29 Jan '17

Hi Yep. Trying to work out why it didn't work before. Seems like my scripts for loading the fw relies upon some if do's :if ( $hostname = "name" ) \ do={ add action=src-nat chain=srcnat src-address=192.168.0.1 to-addresses=2.7.3.6 out-interface=internet } And this seems to be failing ! When I do a put $hostname it prints blank local a [/system identity get name] ; put $a puts the name in $a. wondering if this is a change from before ? Alex -----Original Message----- From: Public [mailto:public-bounces@talk.mikrotik.com.au] On Behalf Of Philip Loenneker Sent: Monday, 30 January 2017 10:41 AM To: MikroTik Australia Public List <public(a)talk.mikrotik.com.au> Subject: Re: [MT-AU Public] VRF - routing and default local services Something that may be useful is you could have the same IP allocated in multiple VRFs. This could help with getting srcnat to do its thing before the change of VRF, if required - but it looks like you're sorted now anyway :)

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VRF - routing and default local services
by Alex Samad - Yieldbroker 29 Jan '17

29 Jan '17

Hi Just continuing on my journey for multiple VRF. I have segregated of an interface for management. Using routing with vrf = Management and mangle rules to mark all packets / connections with vrf=Management. Caveat is that my default routing table must have a valid route. So when I tested telnet ccr on the management port ip from a box on the same vlan - management, I could see packets coming in and then nothing leaving Add in default route via a cross connect and suddenly packets start to flow back. Note I can send default to blackhole that doesn't work. Now my question is things like logging can I set the source address / interface . will setting the source set the interface ? Will packets pick up the mark if they have that source address - or do I need to add in a mangle that say's any with that source address has the vrf=Management Alex Alex Samad | Network And System Manager | Yieldbroker * +61 2 9994 2893 | ( +61 438 838 143 | * alex.samad(a)yieldbroker.com<mailto:alex.samad@yieldbroker.com> This email is confidential and intended for the addressee only. If you may have received this email in error please delete it and notify the sender immediately. Recipients should not forward, disclose, distribute or copy this e-mail or any attachments in whole or part without the express permission of the sender. Views expressed in this message are those of the individual sender, except where they are specifically stated to be those of Yieldbroker. Yieldbroker accepts no liability for the content of this email, or for the consequences of any actions taken on the basis of the information provided, unless that information is subsequently confirmed in writing. Yieldbroker can not guarantee the integrity of this communication and shall not be liable for e-mail which may be intercepted, corrupted, lost, spoofed, delayed, incomplete, or virus infected.

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Telstra Mobile Options
by Paul Julian 23 Jan '17

23 Jan '17

Hi All, I know this has been talked about before and I have been playing around with some options but I was hoping I could draw on some real life experiences from others. I am trying to get a decent Telstra Mobile signal in a rural area, doing my research I can see that there is a Telstra Mobile site 31 km's away which supports 3G 850Mhz and 4G 700Mhz. There is another site which is 24km away which has 3G 850Mhz and 4G 1800Mhz on it, I think the first site would be a better line of sight then the closer one. My iPhone 6 drifts between 2-3 bars of 3G and sometimes 1 bar of 4G at the location, however data speed is pretty sad at around 1.5-2Mbit/s when it actually works. Currently I am using a Routerboard 411U with a Sierra Wireless MC8705 PCIe modem and a 7dbi omni antenna which is external, I figure it's only connecting to the 850Mhz 3G as it only supports that band out of the bands available at the towers. I have thought about using the SXTLTE model as it supports 1800Mhz but would that do the job as only one site supports 1800Mhz and I am not 100% sure which site I am actually reaching at the moment ? What would people suggest in this case ? Should I upgrade to a newer modem and stick with the existing setup and if so which one ? Should I use a better antenna ? I would appreciate any suggestions as I need to get some reliable data there and am hoping to get around 5-10Mbit/s if at all possible. Thanks Paul

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BGP with multiple global route tables on RouterOS
by Philip Loenneker 22 Jan '17

22 Jan '17

Hi all, We have previously used CCRs for BGP transit peers, but found that the delay in BGP with global routes updating the routing table was slower than we would like. This was mainly due to the fact that the BGP process only runs on a single thread so even a upgrading to a CCR1072 is not going to improve it. We built a couple of CHRs with iBGP between them. They perform better because each individual core is faster than the CCR cores, but they still really struggle when there are significant changes to the route table. One of the CPU cores sits at 100% for an extended period of time while the other core sits at almost nothing, and occasionally all of the BGP peers to drop their sessions from timeouts while it is in this state. As the peers re-establish, the route table has a lot more updates to process and so we get in a bit of a vicious circle until the it can manage to get through it all. Does anyone else have experience with global route tables (preferably multiple) on RouterOS? Does anyone have any advice on how we can increase the performance? Throwing more cores at the CHRs doesn't seem like it would have much benefit, but is something we have been considering. We are open to suggestions of alternative platforms to replace or integrate with the design. Waiting for RouterOS v7 which is meant to be more multithreaded might be an option if we had an actual ETA on it.... :) Regards, Philip Loenneker | Network Engineer | TasmaNet 40-50 Innovation Drive, Dowsing Point, Tas 7010, Australia P: 03 6165 2542 | M: 0404 097 816 philip.loenneker(a)tasmanet.com.au<mailto:philip.loenneker@tasmanet.com.au> www.tasmanet.com.au<http://www.tasmanet.com.au/>

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PMP Wireless Bandwidth
by Paul Julian 16 Jan '17

16 Jan '17

Hi all, We currently use a lot of Mikrotik gear for backhauls in a point to multipoint arrangement mostly with some PTP links as well. We do this as we are limited on mast space and frequency as we use the 5ghz band and PMP licensed stuff is really not possible in dense areas in which we operate. We typically bring 1 or 2 fibre connections into an area and then redistribute the bandwidth using wireless, the area is pretty busy frequency wise but we seem to have our network running nicely at the moment. We also operate under carrier licensing and take advantage of the low impact install rules, sometimes we are able to stretch that a little but that also limits what we can put on a roof within reason. We currently run on 3 frequencies in most areas, usually with a sector servicing the majority of the locations and sometimes one or two PTP links as well, it just depends on the design needed, but usually we can get away with getting to use the spectrum we need. We are starting to see NBN rolling into the areas where we cover and want to compete with our own network, we have the resources and transit and peering capacities but our wireless gear just isn't capable of delivering the bandwidth we need to aggregated backhauls to buildings that we service. I'm interested to know how other people manage this, if they have been able to, I am really not interested in providing faster than 50M plans to customers as an NBN equivalent plan, but being able to service just a handful of users at those speeds would top out any Mikrotik radio, especially on 5ghz band, or most radios that I can think of, and apart from running our own fibre or buying more I can't see any options. If we need to buy more fibre then it shoots our pricing out of reach and it would be a waste of time so I am really trying to find a way to get the most out of our wireless networks as we have quite a lot of locations we service now. Thanks Paul

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vrf on mikrotik
by Alex Samad - Yieldbroker 13 Jan '17

13 Jan '17

Hi I asked earlier, thought I would just double check. CCR1036 - looking at using this as my exterior WAN connector / Router. But I want to setup a management port (actually a VLAN) so I want to place that interface and some routes into its own VRF. I have just setup some arista switches which I have done the same - so all the management traffic traverses 1 port. I can see in /ip route vrf I can add routes to a route mark name space. How do I add all packet coming in on a specific interface to a VRF, do I use the firewall mangle table, and basically mark all the packet with the route mark I want to use. Is that it ?? Thanks Alex

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Replace Outdoor AP in Sydney
by Ben Farmer 13 Jan '17

13 Jan '17

Hi guys, Apologies if this is off-topic, but I couldn't seem to find a more suitable place to put this. I'm looking for some remote hands who will be able to assist in replacing an outdoor access point and PoE injector at Lansvale in Sydney. Mikrotik knowledge could come in handy if we have any dramas (however I'm not expecting any, cross fingers). If anyone is able to assist, or knows of anyone who can help, please contact me off-list. Cheers. Regards, Ben Farmer.

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