Skip to content
Nov 25 / thebrotherswisp

TheBrothersWISP 79 – Ubiquiti Financing, MUM Austin, Slack Catchup



This week Greg and Mike do an after Thanksgiving update.

This cast we talk about:
Ubiquiti 0% financing
Mikrotik newsletter 85
MUM USA in Austin April 4th-5th
Mikrotik BGP Tests?
Happy Birthday to Miller
IBM picks up RedHat
Airspan acquires Mimosa

*Slack Updates*
Jeff – Huawei US distribution raised prices and documentation is behind paywall.
Discussion of running fiber along with copper in MDUs
10Gb to the desk for standard office users
Mikrotik btest results and observations
Invalid packets – runts(smaller than 64 bytes), packets not in connection table, session closes and packets show up
Tomas – modern version of ROS do MSS adjustment directly in the PPP driver to allow a packet to stay in the fast path
CCR terminating a couple thousand PPPoE clients choking when 20-30 drop and reestablish at once
Packetloss on dispirate switched network connected by Mikrotik EoIP tunnel
Mike is looking for a whitebox switch that can take a massive amount of ACLs
What do you use for T1s – Greg uses Cisco 2621s with a T1 card(about $30 total)
Tunnels from a Mikrotik exit the “Output” chain, thus routing marks must be made in the output chain, not prerouting

Help support us by becoming a patron! <==join our Slack team!
Keep contacting us: contactus (at) thebrotherswisp.com or https://facebook.com/thebrotherswisp

Click the link below to view the article!

Oct 28 / thebrotherswisp

TheBrothersWISP 78 – MTK Grey Hat, RF E Asymmetric Horns, Supermicro HW Hack?



This week Greg, Andrew Cox, Andrew Thrift, Dave, and Nick Arellano choot the chit.

This cast we talk about:
Generate ACLs for country based filtering
Route filter for North America
Mikrotik grey hat hacker asking for donations.
New logo challenge…what do you guys like?
Don’t use RB1100 ports 11-13; on pcie interface which causes errors and slowness
Ken had to downgrade to 6.40 to get his LTE card working
RF Elements asymmetric horns
RB4011 vs CCR1009 BGP load time
Optimizing throughput for CCR1072 – bgp / route filtering / queues / firewall rules – accept known first etc
Bloomberg Supermicro report rebuttal
Thoughts on Cisco IOS-XR “first impressions”
Play AM radio using your web browser
Libssh authentication bypass on Cisco
Protecting customers from themselves: what do you block?
IPv6 channel is active – Did the internet birth trolls?

Help support us by becoming a patron! <==join our Slack team!
Keep contacting us: contactus (at) thebrotherswisp.com or https://facebook.com/thebrotherswisp

Click the link below to view the article!

Oct 16 / Greg

Cisco IOS-XR Up Arrow Not Working

I found that on my ASR9000 router every time I hit the up arrow I got the following errors:

Invalid number(-48) sent as ASCII value to command-line process from VTY/TTY, refreshing prompt.
Invalid number(-95) sent as ASCII value to command-line process from VTY/TTY, refreshing prompt.

It seems that Cisco recommends setting the stop bits to 2, which can be done with:

1
2
3
configure
line console stopbits 2
commit

I then set my console port to use 2 stop bits.

After that, everything was right as rain!

Sep 30 / thebrotherswisp

TheBrothersWISP 77 – Cambium Cat5, 4011 BGP, All-In-One or Nah?



This week Greg, Dave, and Mike (Déjà vu) yarn for a bit; stay a while, and listen.

This cast we talk about:
IPv6 follow-up: enable ipv6 in MTK, then issue “/system default-configuration print” to see default ipv6 firewall rules
Steve’s IPv4/IPv6 Network Aggregator
Cambium is going to sell outdoor cat5
Greg’s USB boost converter 5V to 24V for PoE
RB4011\RB1100AHx4 BGP?
Highlights from Mikrotik slack:
Check CPUs in system resources cpu to see utilizaton on all cores.
Jeremy says to check if scripts are still running head to system scripts jobs.
Ole says 1036 takes 45 seconds to reboot and start passing traffic.
Thrift says Tilera MDE (Multicore Development Environment) only supports up to the 3.3 kernel, so they are stuck there moving forward.
Jason Wilson shared that the Russian MUM has opened up an iPhone app.
Dan discovered that once customers connected to a remote network with the Cisco anyconnect client they pulled a new DNS server and it caused issues.
VoIP Phone IPSec
Tomas’ Thoughts: At what point does having services separated out bring benifit vs the all-in-one solution?

Help support us by becoming a patron! <==join our Slack team!
Keep contacting us: contactus (at) thebrotherswisp.com or https://facebook.com/thebrotherswisp

Click the link below to view the article!

Sep 17 / Greg

Build a 5V USB to 24V PoE Booster

I wanted the ability to conveniently PoE power radios out in the field, which to me, means via USB. I started doing some googleing, and couldn’t find anything, so here’s a quick tutorial on how to build one of your own. It takes any USB input(either via your laptop* or a booster pack), and spits out 24V power. I put an asterisk by powering it via laptop. As Faisal pointed out, if you use a high wattage radio(or other device) via this on your standard USB interface it may pull too much current and damage your port. It’s for this reason I only use my laptop for very low wattage kit like hap ac lites and the like. If you are going to power something large use a 5V 2A boost battery pack.

Here’s the quick build video:

The STL files for the 3D printed case can be found here: poe-booster-case (227 downloads)

The boost module can be found here on amazon.

The barrel jack can just be one you cut off a wall wart, or you can order some from amazon here.

***I’ve noted that the load should be connected first(hook up the radio first), then plug the USB cable into your power source. I found that some of my boost power packs don’t like it when I do it the other way round.***

Let me know if you have any questions or comments, and thanks for reading!

Sep 16 / thebrotherswisp

TheBrothersWISP 76 – New Mikrotik Kit, UBNT CPE Mystery, S3 Buckets vs Dropbox



This week Greg, Dave, and Mike (Déjà vu) yarn for a bit; stay a while, and listen.

This cast we talk about:
Mikrotik renames release channels
DHCP Snooping
Ubiquiti CPEs with public IPs stop responding to admin access, but pass traffic…why?
Tool to aggregate IPv4/IPv6 routes – thanks Steve!
Mikrotik newsletter 84
RB4011
RB4011 Wireless
Mikrotik 60 GHz SXT
BaseBox 6
WISPApalooza
Amazon S3 bucket vs dropbox or box

Help support us by becoming a patron! <==join our Slack team!
Keep contacting us: contactus (at) thebrotherswisp.com or https://facebook.com/thebrotherswisp

Click the link below to view the article!

Sep 2 / thebrotherswisp

TheBrothersWISP 75 – VoIP Acquisitions, Unifi XG, A Hashing Story



This week Greg, Dave, and Mike do a quick cast to kick off the Labor day weekend…it sure feels like working trying to listen to these things, though…

This cast we talk about:
SECURE YOUR ROUTERS!!!!!!!!!
Ignite net new firmware
TBW IPv6 podcast
Nicks notes on IPv6
All of the pickles
Sangoma acquires Digium Inc
Unifi super high density deployment radios – Arena / Conference Hall
Tracking down TCP resets, a hashing story
Tower training over at ISPSupplies
Issabel Asterisk GUI Dave said is horrible…so why am I linking it?

Help support us by becoming a patron! <==join our Slack team!
Keep contacting us: contactus (at) thebrotherswisp.com or https://facebook.com/thebrotherswisp

Click the link below to view the article!