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/31 IPv4 RFC3021
by Andrew Gilbett 28 Nov '16

28 Nov '16

Hi Guys, Do any of you know if Mikrotik supports /31 PTP IPv4 links as per RFC3021? Anecdotal evidence suggests that there is some kind of support but not explicit and inter operable support. Thanks Andrew

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ROS 6.37 and DHCPv6 client
by Charlie Garrison 25 Nov '16

25 Nov '16

Good morning, Since upgrading to 6.37, router is having trouble getting IPv6 prefix delegation after reboot. Sometimes the dhcp client will finally renew and bind the PD, after 5 minutes or more. Sometimes it fails. Forcing renewal doesn’t help. But if I disable & reenable the dhcpv6 client on the pppoe interface, then it gets PD immediately. Personal observation says there is a timing issue, with dhcp client trying to get PD before pppoe interface is up (but that’s just a guess). Is this a known/common problem? Or an issue with v6.37? What can I do to resolve it? Thanks, Charlie -- Charlie Garrison <garrison(a)zeta.org.au> github.com/cngarrison metacpan.org/author/CNG

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Disappearing network - CAPsMAN and 6.37.2
by Charlie Garrison 24 Nov '16

24 Nov '16

Good morning, I upgraded CAPsMAN router from v6.37.1 to 6.37.2 and CAP’s have stopped working. Specifically, the network no longer appears in list of Wifi networks for clients. I can’t find any errors in CAPsMAN router or CAP’s, nor do I see anything relevant in CHANGES. Disabling CAP and using a manual setup (WAP) has bypassed the problem. Of course I need to get CAP’s working again. How do I troubleshoot this issue? Should I reset the router and downgrade to 6.37.1? Something else? Thanks, Charlie PS. I upgraded in (a blind) hope that it would fix an unrelated problem. (I sent a post last month with subject “ROS 6.37 and DHCPv6 client”, but never got any takers.) -- Charlie Garrison <garrison(a)zeta.org.au> github.com/cngarrison metacpan.org/author/CNG

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WARNING: Issue when upgrading from versions earlier than v6.22
by Andrew Cox 21 Nov '16

21 Nov '16

Hi All, Just wanted to pass on a quick heads up that Tom Smyth identified. == DO NOT upgrade from before 6.22 to 6.37 versions older than the just released .2 version. *) firewall - fixed "connection-state" value disappearance in rules that were created before v6.22; This also means that if you did already did that, you will need to go in and correct your firewall rules as it will have discarded the connection-state attributes. Cheers, Andrew [https://mailfoogae.appspot.com/t?sender=aYW5kcmV3Z2VvZmZyZXljb3hAZ21haWwuY2… Andrew Cox General Manager [https://brightwifi.com/mail.png] andrew.cox(a)brightwifi.com Mobile: +61 402 777 352 | Phone: +1 214 306 6108 www.brightwifi.com Australia • United States • Philippines

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CCR1072
by Alex Samad - Yieldbroker 21 Nov '16

21 Nov '16

Hi Wondering if any one is using 1g copper SFP's in 10G SFP+ port on the 1072's. I just tried 3-4 of mine in 3-4 ports and none of them would register ... rather annoying.. A 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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CCR rack mounting brackets
by Alex Samad - Yieldbroker 18 Nov '16

18 Nov '16

Hi Any one in Sydney have a spare set they are not going to use, that I might have . I seem to have lost a pair. 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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bgp question
by Alex Samad - Yieldbroker 14 Nov '16

14 Nov '16

I have 2 border routers that mesh connect to 2 vendor routers on their own vlan. The border routers connect to another pair of internal routers on another vlan. So bdr => vendor eBGP bdr => internal iBGP I have bgp peers connected bdr -> internal Now I am only seeing a very limited range of prefixes. 1) I think my aggregate is affecting my iBGP 2) I think my outfilter on my instance is affecting my iBGP as well I thought iBGP would be treated differently. I am thinking of instead of sharing my AS between inside and the border I create a new private AS. As I don't want to change my BGP filters Alex

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Multihoming BGP - Different Sites
by Darryl Ross 30 Oct '16

30 Oct '16

-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Hi All, Trying to work out a multi-homing BGP configuration where I have a router at two different locations (connected via a dedicated link) with a different provider in each location and the complication that ISP 2 must only be used for transit when ISP 1 is completely down. I am receiving only default and directly connected routes from each ISP. ISP 1 ISP 2 | | +---+ +---+ | A |---------| B | +---+ +---+ At present, I have router B set a low local preference on the default received from ISP 2 and router A set to always inject the default route into the network via OSPF. This causes all traffic to flow from B to A via the dedicated link. The issues I am having getting this working the way I want is: * The default received from each provider is not passed through the iBGP session to the to other site. Have not been able to work out how to get this to happen. * If I enable distribute-default=if-installed on router B, it takes no effect if the only default is the BGP default. It appears OSPF needs a statically defined default. * If I enable distribute-default=always on router B, it causes it to remove the OSPF default received from router A from the routing table, so I can't use distance to steer the traffic. Has anyone tried to get a setup like this working? I've tried a few things with scripts to monitor the BGP sessions and toggle static routes and OSPF config but none of them have worked satisfactorily. The only other work around I can think of is to VLAN ISP 2 back over to router A, although I would really really like to not do that (the sites are interstate from each other). The routers are involved are a CCR1072 and a CCR1036, both running 6.36. 2. Thanks Darryl -----BEGIN PGP SIGNATURE----- Version: GnuPG v2 iEYEARECAAYFAlgVOokACgkQ/XQ6DbmPjom7QQCfWIlcI2RZmqxH/jCQhGcujq3V Y+oAn2iZgKqByn5R4KxKGfjK5jDmbcDq =QtUg -----END PGP SIGNATURE-----

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Tested 4G Combinations
by Stephen 26 Oct '16

26 Oct '16

Hi all, I have a MikroTik RB951G-2HnD at the moment. I've recently moved to a new location where no ADSL or WDSL is available. This essentially leaves me with two options - satellite, or 4G. I was considering 4G for the moment at least. My question is largely twofold: 1. Has anyone got a tested USB 4G modem/card/etc that they can say definitely works well with the MikroTik? Don't want to fork out some money and find out it doesn't :) 2. Can anyone confirm a provider/plan that works well with this? I am considering Optus's "$70 My Mobile Broadband Plus" or, more reluctantly, buying their "Home Wireless Broadband" plan for 200GB a month, but, I have to then buy the Huawei E5186 modem. I couldn't find any definitive advice if we can bridge the E5186 and get the MikroTik to do the dialing. I'd rather avoid double-NAT'ing if I can. Otherwise, I guess I could pull the SIM out and stick it in a known working modem - but that seems awfully expensive for not much. Any advice would be much appreciated! Thanks, -Stephen

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Question
by Alex Samad - Yieldbroker 21 Oct '16

21 Oct '16

Hi I am looking at consolidating some Virtual routers installs into physical ccr1036 (&72) Current my vm's handle public internet and private p-t-p links. My thought was to use VRF to isolate the routing tables on the new consolidated ccr's. I am presuming all the interfaces that where the old private would get tagged with a vrf tag=??? And all the internet packet would get tagged with a different vrf tag. On the router I would have these interfaces A) Internet - B) Private - C) FromInside. I want to allow C to A or B and A to C or B to C. but never A <=> B (don't want to act as a transit). On B I am using bgp to clients and on A I am using BGP to ISP's. I was going to use a private BGP AS for the private links and not to mix it with my public AS on the internet. This sounds like stock standard stuff. Any gotchas to look for ? A

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