October 2016 - Public - talk.mikrotik.com.au

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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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 27 Oct '16

27 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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PCQ Queue performance on CCR-1072
by Matt Perkins 21 Oct '16

21 Oct '16

Anybody have any idea what sort of real world performance I can expect from a CCR-1072 running PCQ between two 10 gig interfaces. Matt. -- /* Matt Perkins Direct 1300 137 379 Spectrum Networks Ptd. Ltd. Office 1300 133 299 matt(a)spectrum.com.au Level 6, 350 George Street Sydney 2000 Spectrum Networks is a member of the Communications Alliance & TIO */

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VDSL modems
by Mike Everest 07 Oct '16

07 Oct '16

Hi Folks, A few months back, I asked for opinions on a good adsl modem to use a bridge for MikroTik PPPoE. With increase in prevalence of VDSL services (especially with #nbwhen ;) does anyone have some opinion of readily available and 'good' (not necessarily cheap ;) vdsl modems? Cheers! Mike.

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