asterisk at phreaknet.org
2022-Jul-27 16:54 UTC
[asterisk-users] DUNDi peers disconnect after being connected for months or years, cannot reconnect again
On 7/27/2022 11:34 AM, Court Campbell wrote:> > I realize that the heyday of DUNDi was about 2008, and that there’s > less and less information online about it and lots of people don’t use > it anymore and use static IAX trunks instead. But we have 53 asterisk > phone systems connecting our locations, and so creating static IAX > trunks (even with a regional hub and spoke model) is a significant > undertaking. > > We’ve had issues with DUNDi peers disconnecting in the past and with > Elastix used to have to do an amportal restart on the PBX to have it > reconnect again. But the new issue that we’re seeing is that the peer > refuses to reconnect again, even after changing the long secret key in > dundi_general, the MAC address of the VM the PBX is running on, the IP > of the PBX and recreating the public/private keypair. >Do you have any logs/debug demonstrating this?> > The PBX that disconnected will not reconnect to any DUNDi peers at > all, even to a completely new VM that we stand up at the same site on > the same virtual switch on the same host. We are only trying to do > inter-site extension dialing, not routing external calling between > sites using DUNDi. > > I’m also okay with giving up on DUNDi if anybody else has a less > labour intensive way of routing extension dialing between that many > PBXes than a web of static IAX trunks. > >Why not run a centralized lookup scheme for routing, using ENUM or an HTTPS API? That's what I generally see these days for large networks using IAX2 trunking; I've only encountered one setup recently using DUNDi. Assuming that central server is always routing, you then have a single source of truth for call routing.> Here are the config files. I removed all the ; commented lines in > dundi.conf to save space. > > Iax_custom.conf > > [dundi] > > type=user > > dbsecret=dundi/secret > > context=ext-local > > disallow=all > > allow=ulaw > > allow=g726 > > dundi.conf > > [general] > > #include dundi_general_custom.conf > > ttl=32 > > autokill=yes > > [mappings] > > #include dundi_mappings_custom.conf > > #include dundi_peers_custom.conf > > dundi_mappings.conf > > priv => > dundi-priv-canonical,0,IAX2,dundi:${SECRET}@PBX_IP/${NUMBER},nopartial > > priv => > dundi-priv-customers,100,IAX2,dundi:${SECRET}@PBX_IP/${NUMBER},nopartial > > priv => > dundi-priv-via-pstn,400,IAX2,dundi:${SECRET}@PBX_IP/${NUMBER},nopartial > > dundi_general.conf > > organization> > locality> > stateprov> > country> > email> > phone> > department> > secret=secret key > > entityid=MAC address > > dundi_peers.conf > > [server A MAC] > > model=symmetric > > host> > inkey> > outkey> > his_status=connected > > include=priv > > permit=priv > > qualify=yes > > order=primary > > [server B MAC] > > model=symmetric > > host> > inkey> > outkey> > his_status=connected > > include=priv > > permit=priv > > qualify=yes > > order=primary > > extensions_custom.conf > > [from-internal] > > include => from-internal-noxfer > > include => from-internal-xfer > > include => dundi-priv-lookup > > include => bad-number ; auto-generated > > exten => h,1,Macro(hangupcall) > > ; ******************************************** > > ; CONFIGURACION PARA DUNDi > > [dundi-priv-canonical] > > ; Here we include the context that contains the extensions. > > exten => _9999X,1,Macro(stdexten,${EXTEN}) > > ;include => ext-local > > ; Here we include the context that contains the queues. > > ; include => ext-queues > > [dundi-priv-customers] > > ; If you have customers (or resell services) we can list them here > > [dundi-priv-via-pstn] > > ; Here we include the context with our trunk to the PSTN, > > ; if we want the other teams can use our trunks > > ;include => outbound-allroutes > > [dundi-priv-local] > > ; In this context we unify the three contexts, we can use this as > > ; context of the trunks of dundi iax > > include => dundi-priv-canonical > > include => dundi-priv-customers > > include => dundi-priv-via-pstn > > [dundi-priv-lookup] > > ; This context is responsible for making the search for a number of dundi > > ; Before you do the search properly define our caller id. > > ; because if not we have a caller id as 'device<0000>'. > > exten => _X.,1,Macro(user-callerid) > > exten => _X.,n,Macro(dundi-priv,${EXTEN}) > > exten => _X.,n,GotoIf($['${DIALSTATUS}' = 'BUSY']?100) > > exten => _X.,n,Goto(bad-number,${EXTEN},1) > > exten => _X.,100,Playtones(congestion) > > exten => _X.,101,Congestion(10) > > [macro-dundi-priv] > > ; This is the macro is called from the context [dundi-priv-lookup] > > ; It also avoids having loops in the consultations dundi. > > exten => s,1,Goto(${ARG1},1) > > switch => DUNDi/priv > > ; ******************************************** >
Court Campbell
2022-Jul-27 19:58 UTC
[asterisk-users] DUNDi peers disconnect after being connected for months or years, cannot reconnect again
This is what I get when I run "dundi set debug on". I've changed
the IPs to DUNDi Server 1 and 2. DUNDi peers always show UNREACHABLE
Tx-Frame -- OSeqno: 000 ISeqno: 000 Type: NULL (Command)
Flags: 00 STrans: 26713 DTrans: 00000 [DUNDi Server 1:4520] (Final)
Tx-Frame -- OSeqno: 000 ISeqno: 000 Type: NULL (Command)
Flags: 00 STrans: 11263 DTrans: 00000 [DUNDi Server 2:4520] (Final)
Tx-Frame -- OSeqno: 000 ISeqno: 000 Type: NULL (Command)
Flags: 00 STrans: 26713 DTrans: 00000 [DUNDi Server 1:4520] (Final)
Tx-Frame -- OSeqno: 000 ISeqno: 000 Type: NULL (Command)
Flags: 00 STrans: 11263 DTrans: 00000 [DUNDi Server 2:4520] (Final)
Tx-Frame -- OSeqno: 000 ISeqno: 000 Type: NULL (Command)
Flags: 00 STrans: 26713 DTrans: 00000 [DUNDi Server 1:4520] (Final)
Tx-Frame -- OSeqno: 000 ISeqno: 000 Type: NULL (Command)
Flags: 00 STrans: 11263 DTrans: 00000 [DUNDi Server 2:4520] (Final)
Tx-Frame -- OSeqno: 000 ISeqno: 000 Type: NULL (Command)
Flags: 00 STrans: 26713 DTrans: 00000 [DUNDi Server 1:4520] (Final)
Tx-Frame -- OSeqno: 000 ISeqno: 000 Type: NULL (Command)
Flags: 00 STrans: 11263 DTrans: 00000 [DUNDi Server 2:4520] (Final)
Rx-Frame -- OSeqno: 000 ISeqno: 000 Type: NULL (Command)
Flags: 00 STrans: 29321 DTrans: 00000 [DUNDi Server 1:4520] (Final)
Tx-Frame -- OSeqno: 000 ISeqno: 001 Type: ACK (Response)
Flags: 00 STrans: 22000 DTrans: 29321 [DUNDi Server 1:4520] (Final)
Rx-Frame -- OSeqno: 000 ISeqno: 000 Type: NULL (Command)
Flags: 00 STrans: 04905 DTrans: 00000 [DUNDi Server 2:4520] (Final)
Tx-Frame -- OSeqno: 000 ISeqno: 001 Type: ACK (Response)
Flags: 00 STrans: 20346 DTrans: 04905 [DUNDi Server 2:4520] (Final)
Tx-Frame -- OSeqno: 000 ISeqno: 000 Type: NULL (Command)
Flags: 00 STrans: 26713 DTrans: 00000 [DUNDi Server 1:4520] (Final)
Tx-Frame -- OSeqno: 000 ISeqno: 000 Type: NULL (Command)
Flags: 00 STrans: 11263 DTrans: 00000 [DUNDi Server 2:4520] (Final)
Rx-Frame -- OSeqno: 000 ISeqno: 000 Type: NULL (Command)
Flags: 00 STrans: 29321 DTrans: 00000 [DUNDi Server 1:4520] (Final)
Tx-Frame -- OSeqno: 000 ISeqno: 001 Type: ACK (Response)
Flags: 00 STrans: 12424 DTrans: 29321 [DUNDi Server 1:4520] (Final)
Rx-Frame -- OSeqno: 000 ISeqno: 000 Type: NULL (Command)
Flags: 00 STrans: 04905 DTrans: 00000 [DUNDi Server 2:4520] (Final)
Tx-Frame -- OSeqno: 000 ISeqno: 001 Type: ACK (Response)
Flags: 00 STrans: 02609 DTrans: 04905 [DUNDi Server 2:4520] (Final)
Rx-Frame -- OSeqno: 000 ISeqno: 000 Type: NULL (Command)
Flags: 00 STrans: 29321 DTrans: 00000 [DUNDi Server 1:4520] (Final)
Tx-Frame -- OSeqno: 000 ISeqno: 001 Type: ACK (Response)
Flags: 00 STrans: 03011 DTrans: 29321 [DUNDi Server 1:4520] (Final)
Rx-Frame -- OSeqno: 000 ISeqno: 000 Type: NULL (Command)
Thank you,
Court Campbell
-----Original Message-----
From: asterisk at phreaknet.org <asterisk at phreaknet.org>
Sent: Wednesday, July 27, 2022 12:55 PM
To: Court Campbell <CCampbell at flexngate.com>
Cc: Asterisk Users <asterisk-users at lists.digium.com>
Subject: Re: [asterisk-users] DUNDi peers disconnect after being connected for
months or years, cannot reconnect again
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On 7/27/2022 11:34 AM, Court Campbell wrote:>
> I realize that the heyday of DUNDi was about 2008, and that there's
> less and less information online about it and lots of people don't use
> it anymore and use static IAX trunks instead. But we have 53 asterisk
> phone systems connecting our locations, and so creating static IAX
> trunks (even with a regional hub and spoke model) is a significant
> undertaking.
>
> We've had issues with DUNDi peers disconnecting in the past and with
> Elastix used to have to do an amportal restart on the PBX to have it
> reconnect again. But the new issue that we're seeing is that the peer
> refuses to reconnect again, even after changing the long secret key in
> dundi_general, the MAC address of the VM the PBX is running on, the IP
> of the PBX and recreating the public/private keypair.
>
Do you have any logs/debug demonstrating this?>
> The PBX that disconnected will not reconnect to any DUNDi peers at
> all, even to a completely new VM that we stand up at the same site on
> the same virtual switch on the same host. We are only trying to do
> inter-site extension dialing, not routing external calling between
> sites using DUNDi.
>
> I'm also okay with giving up on DUNDi if anybody else has a less
> labour intensive way of routing extension dialing between that many
> PBXes than a web of static IAX trunks.
>
>
Why not run a centralized lookup scheme for routing, using ENUM or an HTTPS API?
That's what I generally see these days for large networks using IAX2
trunking; I've only encountered one setup recently using DUNDi. Assuming
that central server is always routing, you then have a single source of truth
for call routing.
> Here are the config files. I removed all the ; commented lines in
> dundi.conf to save space.
>
> Iax_custom.conf
>
> [dundi]
>
> type=user
>
> dbsecret=dundi/secret
>
> context=ext-local
>
> disallow=all
>
> allow=ulaw
>
> allow=g726
>
> dundi.conf
>
> [general]
>
> #include dundi_general_custom.conf
>
> ttl=32
>
> autokill=yes
>
> [mappings]
>
> #include dundi_mappings_custom.conf
>
> #include dundi_peers_custom.conf
>
> dundi_mappings.conf
>
> priv =>
> dundi-priv-canonical,0,IAX2,dundi:${SECRET}@PBX_IP/${NUMBER},nopartial
>
> priv =>
> dundi-priv-customers,100,IAX2,dundi:${SECRET}@PBX_IP/${NUMBER},noparti
> al
>
> priv =>
> dundi-priv-via-pstn,400,IAX2,dundi:${SECRET}@PBX_IP/${NUMBER},nopartia
> l
>
> dundi_general.conf
>
> organization>
> locality>
> stateprov>
> country>
> email>
> phone>
> department>
> secret=secret key
>
> entityid=MAC address
>
> dundi_peers.conf
>
> [server A MAC]
>
> model=symmetric
>
> host>
> inkey>
> outkey>
> his_status=connected
>
> include=priv
>
> permit=priv
>
> qualify=yes
>
> order=primary
>
> [server B MAC]
>
> model=symmetric
>
> host>
> inkey>
> outkey>
> his_status=connected
>
> include=priv
>
> permit=priv
>
> qualify=yes
>
> order=primary
>
> extensions_custom.conf
>
> [from-internal]
>
> include => from-internal-noxfer
>
> include => from-internal-xfer
>
> include => dundi-priv-lookup
>
> include => bad-number ; auto-generated
>
> exten => h,1,Macro(hangupcall)
>
> ; ********************************************
>
> ; CONFIGURACION PARA DUNDi
>
> [dundi-priv-canonical]
>
> ; Here we include the context that contains the extensions.
>
> exten => _9999X,1,Macro(stdexten,${EXTEN})
>
> ;include => ext-local
>
> ; Here we include the context that contains the queues.
>
> ; include => ext-queues
>
> [dundi-priv-customers]
>
> ; If you have customers (or resell services) we can list them here
>
> [dundi-priv-via-pstn]
>
> ; Here we include the context with our trunk to the PSTN,
>
> ; if we want the other teams can use our trunks
>
> ;include => outbound-allroutes
>
> [dundi-priv-local]
>
> ; In this context we unify the three contexts, we can use this as
>
> ; context of the trunks of dundi iax
>
> include => dundi-priv-canonical
>
> include => dundi-priv-customers
>
> include => dundi-priv-via-pstn
>
> [dundi-priv-lookup]
>
> ; This context is responsible for making the search for a number of
> dundi
>
> ; Before you do the search properly define our caller id.
>
> ; because if not we have a caller id as 'device<0000>'.
>
> exten => _X.,1,Macro(user-callerid)
>
> exten => _X.,n,Macro(dundi-priv,${EXTEN})
>
> exten => _X.,n,GotoIf($['${DIALSTATUS}' = 'BUSY']?100)
>
> exten => _X.,n,Goto(bad-number,${EXTEN},1)
>
> exten => _X.,100,Playtones(congestion)
>
> exten => _X.,101,Congestion(10)
>
> [macro-dundi-priv]
>
> ; This is the macro is called from the context [dundi-priv-lookup]
>
> ; It also avoids having loops in the consultations dundi.
>
> exten => s,1,Goto(${ARG1},1)
>
> switch => DUNDi/priv
>
> ; ********************************************
>