From: Vaughan Lee (vaughan.lee@xxxxxxxxxxx)
Date: Wed Sep 29 1999 - 06:04:28 GMT-3
I did once manage to get snapshot routing working using a dialer interface
using dialer maps and dialer in-band, but only in conjunction with a rotary
group, which can probably be regarded as cheating! I have the config
available still if anyone is desperate enough to want it, though it should
be fairly easy to work out if you start by configuring for rotary groups.
My understanding of the dialer in-band command is that it specifies if the
connection is to be established over the link that will be used to carry
data e.g. you are instructing the modem or whatever via the data channel to
establish a call. In the case of an analogue line this is the case, but
with ISDN there is a separate channel (the D channel) that is used to
establish the connection, the data being carried over the B channel, so
dialer in-band is not required.
Hope that helps a bit.
Regards,
Vaughan
Vaughan Lee, Network Specialist.
debis IT Services (UK) Ltd.
E-mail: vaughan.lee@debis.co.uk
Direct Phone: 01908 279561
Direct Fax: 01908 279061
http://www.debis.co.uk/
-----Original Message-----
From: Chad Marsh [mailto:chad@wa.net]
Sent: 29 September 1999 09:28
To: CCIE Lab; Cisco
Subject: Re: More Dialer stuff
Correction, after further study, it appears the mutually exclusive
commands on the dialer interface are 'dialer remote-name' and 'dialer
map'. If you set a remote name, you can no longer use 'dialer map'(which
is required for snapshot), you can only set a dialer string.
But, if you do specify a 'dialer remote-name' first, you cannot enter
'dialer in-band', you get that error '%Remove the dialer profile first'
You can enter 'dialer in-band', then enter 'dialer remote-name', but at
that point you can't enter dialer maps, so I guess that doesn't do any
good anyway.
So what exactly does 'dialer in-band' do anyway?
CCO says:
dialer in-band
To specify that dial-on-demand routing (DDR) is to be supported, use the
dialer in-band interface configuration command. To disable DDR for the
interface, use the no form of this command.
But that doesn't make any sense, I can setup DDR with dialer profiles
using dialer pools, and without using 'dialer in-band' and it works just
fine.
Chad Marsh
>
> It appears that the 'dialer in-band' and 'dialer remote-name' commands
> are mutually exclusive on the Dialer interface.
> I have this working with rotary-groups, not sure if it would work with
> dialer pools, maybe I'll try that next.
> But the bottom line is that it DOES work.
> I just got it working, here are some relevant outputs and portions of
> the configs:
>
> Chad Marsh
>
> R5#sho snap
> Dialer1 is up, line protocol is upSnapshot client
> Options: dialer support
> Length of active period: 5 minutes
> Length of quiet period: 8 minutes
> Length of retry period: 8 minutes
> For dialer address 1
> Current state: active, remaining/exchange time: 4/2 minutes
> Connected dialer interface:
> BRI0:1
> Updates received this cycle: ip
>
> R6#sho snap
> Dialer1 is up, line protocol is upSnapshot server
> Options: dialer support
> Length of active period: 5 minutes
> For ip address: 172.16.1.5
> Current state: active, remaining time: 3 minutes
> Connected dialer interface:
> BRI0:1
>
> R5#sh ru
> Building configuration...
>
> Current configuration:
> !
> hostname R5
> !
> !
> username R6 password 0 ccie
> isdn switch-type basic-dms100
> !
> interface Loopback0
> ip address 10.5.1.1 255.255.255.0
> !
> interface BRI0
> no ip address
> encapsulation ppp
> isdn spid1 20649906240101 4990624
> isdn spid2 20649906250101 4990625
> dialer rotary-group 1
> no cdp enable
> !
> interface Dialer1
> ip address 172.16.1.5 255.255.255.0
> encapsulation ppp
> dialer in-band
> dialer in-band
> dialer map snapshot 1 4990622
> dialer map ip 172.16.1.6 name R6 broadcast 4990622
> dialer-group 1
> snapshot client 5 8 dialer
> no cdp enable
> ppp authentication chap
> !
> router rip
> network 10.0.0.0
> network 172.16.0.0
> !
> ip classless
> !
> dialer-list 1 protocol ip permit
> !
> R5#
>
> R6#sho run
> Building configuration...
>
> Current configuration:
> !
> hostname R6
> !
> !
> username R5 password 0 ccie
> isdn switch-type basic-dms100
> !
> interface Loopback0
> ip address 20.6.1.1 255.255.255.0
> !
> interface BRI0
> no ip address
> encapsulation ppp
> isdn spid1 20649906220101 4990622
> isdn spid2 20649906230101 4990623
> dialer rotary-group 1
> no cdp enable
> !
> interface Dialer1
> ip address 172.16.1.6 255.255.255.0
> encapsulation ppp
> dialer in-band
> dialer idle-timeout 30
> dialer map ip 172.16.1.5 name R5 broadcast 4990624
> dialer-group 1
> snapshot server 5 dialer
> no cdp enable
> ppp authentication chap
> !
> router rip
> network 10.0.0.0
> network 172.16.0.0
> !
> ip classless
> !
> dialer-list 1 protocol ip permit
> !
> R6#
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