[AusNOG] 4G router alternatives to Cradlepoint

Thu Dec 10 12:25:00 EST 2020

Hello!

We use peplink and teltonika.

For our smaller sites the teltonika has been great but large, peplink has nailed it.

Kind Regards,
________________________________

BNS Internal
bns at beyondnetworksolutions.com.au
www.beyondnetworksolutions.com.au
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Today's Topics:

   1. Cisco ISR4431 SIP ALG causing SIP registration drops
      (Rhys Hanrahan)
   2. Re: 4G router alternatives to Cradlepoint (Andrew Yager)

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Message: 1
Date: Wed, 9 Dec 2020 04:49:34 +0000
From: Rhys Hanrahan <rhys at nexusone.com.au>
To: "'ausnog at lists.ausnog.net'" <ausnog at lists.ausnog.net>
Subject: [AusNOG] Cisco ISR4431 SIP ALG causing SIP registration drops
Message-ID: <477ec34dcb3c4e0f8e644ac785104ce7 at nexusone.com.au>
Content-Type: text/plain; charset="us-ascii"

Hi Everyone,

We've just deployed a Cisco ISR4431 for a customer, but have noticed issues with SIP registrations dropping out. We are using our own Hosted VOIP platform that is external to the customer, and if we roll back to their old 891F there are no issues. I haven't deployed an ISR 4000 series before, but have already tried turning off the SIP ALG as below.

Does any know how I can ask the router nicely to please leave our SIP traffic alone?

It seems like the 4431 has a more involved SIP ALG (I've never had to disable it before on Cisco IOS). I've already done the following to turn it off (supposedly) but while this did help quite a bit we're still seeing weird issues (mostly registrations dropping, other issues likely related to that). From what I can tell the Cisco is still processing SIP traffic to some degree, despite disabling the ALG.

>From what I've seen in pcaps _some_ phones are not responding to SIP OPTIONS packets.

How I'm disabling the SIP ALG - we do use TCP and UDP 5060 for SIP, but no other ports.

no ip nat service sip tcp port 5060
no ip nat service sip udp port 5060

Still seeing the SIP ALG feature doing things:

office#show hardware qfp active feature alg statistics sip l7data
SIP info pool used chunk entries number: 281
Hashindex:    93  l7_data: 0x34d02940  callid: 57ea4a7744cb82c675b5197167234e0d  wlock_cnt:    0
Hashindex:    94  l7_data: 0x34cf4800  callid: 1_1541420790  wlock_cnt:    0
Hashindex:    97  l7_data: 0x34cde520  callid: 0_1697534698  wlock_cnt:    0
Hashindex:    99  l7_data: 0x34cf6180  callid: 39a414f04770bd18394131045cf911fe  wlock_cnt:    0
Hashindex:   111  l7_data: 0x34cd1920  callid: 0_1733741690  wlock_cnt:    0

The config is largely identical to what we ran on the 891F, just some minor changes to interface names and some syntax changes.

This is what we're running:
Cisco IOS Software [Fuji], ISR Software (X86_64_LINUX_IOSD-UNIVERSALK9-M), Version 16.8.3, RELEASE SOFTWARE (fc2)

I can't find anything else to go on right now, so a firmware upgrade is next but hoping someone else has seen this before.

Thanks all!

Rhys Hanrahan
Chief Information Officer
Nexus One Pty Ltd

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Message: 2
Date: Wed, 9 Dec 2020 18:01:13 +1100
From: Andrew Yager <andrew at rwts.com.au>
To: ausnog at lists.ausnog.net
Subject: Re: [AusNOG] 4G router alternatives to Cradlepoint
Message-ID:
        <CAEX38CPi=1AM2gfvuUuWaXR2uNCnLgF73GDheNrgz8CwUC1r0g at mail.gmail.com>
Content-Type: text/plain; charset="utf-8"

Just wanted to say a massive thank you to those who took the time to reply.

We've got a bunch of options now in our price point, and are going to
procure some units to test with and assess over the next couple of months.
Once we're done, I'll try and provide some feedback. There are some very
compelling 4G and 4G options out there that "on paper" do the job quite
well - so keen to see how they run when we actually test them out.

Thanks,
Andrew

On Mon, 7 Dec 2020 at 17:51, Andrew Yager <andrew at rwts.com.au> wrote:

> Hi,
>
> I feel like someone is forever asking this question.
>
> I'm looking for a solid alternative to Cradlepoint for a large rollout
> (about 400 sites) with 4G primary connection. The sites have unreliable
> power, which means things like SRXs are not a go. (I do like the 320s with
> LTE mPIM "mostly").
>
> Aside from Cradlepoint's IBR commercial model becoming a bit more
> challenging with subscriptions,  we are keen for something that is solid,
> basic, and reliable, and can ideally run on DC power. It's even better if
> we can connect an external antenna.
>
> Only real requirement is two ethernet ports and the ability to do IPSEC
> tunnelling. BGP/VRF support would be nice (yes, over the IPSEC circuit) -
> but honestly, it's a requirement that can be engineered around.
>
> Customer would settle for something solid around the $800-$1k mark, so any
> reasonable options around this price point would be *greatly* appreciated.
>
> Thanks,
> Andrew
>
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