From: Ian J. Bennett (Ian.Bennett@xxxxxxxxxxxxxxxxxx)
Date: Mon May 27 2002 - 14:26:58 GMT-3
I have 827-4v's which I use in my company dsl lab. It is possible to have a pvc
configured via the service provider that links to DSLAM ports back to back or
across the atm core, although they would have to offer this service. I know so
me providers are going to offer this as a b2b service in the netherlands.
I've attached one of my configs which uses standard ip routing over atm with de
fault route, single pvc. As you can see the voip ports can be independently con
figured.
As for dsl modems back to back, in theory yes as they are both modems, but not
sure how you would go about configuring this if at all possible. The DSL modem
is ATU-R and the DSLAM line card port is the ATU-C for ADSL this will probably
have some relevance in the way they negotiate.
Hope this in useful, rgds Ian.
Attach:
827-4v#sh run
Building configuration...
Current configuration : 1797 bytes
!
version 12.2
no service single-slot-reload-enable
no service pad
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname 827-4v
!
boot system flash
boot system flash c820-sv6y6-mz.122-1.XD1.bin
logging rate-limit console 10 except errors
enable secret 5 $1$CP.V$vL.NGYFp24spRJYASc0kx.
!
mmi polling-interval 60
no mmi auto-configure
no mmi pvc
mmi snmp-timeout 180
ip subnet-zero
no ip domain-lookup
ip dhcp excluded-address 192.168.5.33
!
ip dhcp pool LAN
network 192.168.5.32 255.255.255.224
dns-server 172.16.1.50
default-router 192.168.5.33
!
ip multicast-routing
no ip dhcp-client network-discovery
lcp max-session-starts 0
!
!
!
!
!
!
!
!
!
interface Ethernet0
ip address 192.168.5.33 255.255.255.224
ip pim sparse-mode
no keepalive
hold-queue 32 in
!
interface ATM0
ip address 192.168.5.134 255.255.255.252
ip pim nbma-mode
ip pim sparse-mode
no atm ilmi-keepalive
pvc 0 0/35
encapsulation aal5snap
!
bundle-enable
dsl operating-mode auto
h323-gateway voip interface
h323-gateway voip id top-2600 ipaddr 10.0.101.130 1718
h323-gateway voip bind srcaddr 192.168.5.134
hold-queue 224 in
!
interface Dialer0
no ip address
no cdp enable
!
ip classless
ip route 0.0.0.0 0.0.0.0 192.168.5.133
no ip http server
ip pim rp-address 172.16.30.251
!
call rsvp-sync
!
voice-port 1
cptone GB
!
voice-port 2
!
voice-port 3
!
voice-port 4
!
dial-peer voice 10 pots
port 1
!
dial-peer voice 2 voip
destination-pattern .T
session target ras
dtmf-relay cisco-rtp
playout-delay maximum 300
codec g711ulaw
ip qos dscp cs5 media
!
gateway
!
!
line con 0
password 7 045802150C2E
login
transport input none
stopbits 1
line vty 0 4
password 7 045802150C2E
login
!
scheduler max-task-time 5000
end
-----Original Message-----
From: Michael Snyder [mailto:msnyder@ldd.net]
Sent: 27 May 2002 17:03
To: ccielab@groupstudy.com
Cc: 'Brad Ellis / NLI'
Subject: Anyone Using 827-4V in their Lab? It has four FXS ports built
in.
Thinking about getting me a pair of 827-4V's. We have a plain 827 in
our office, and the IOS seems mostly intact. I mean it runs IOS and
most of the commands seem to be there. See bottom for sample 827
config.
They are going for about $750, new on the internet. Which is much
cheaper than adding voice to a 2600 or a 3600.
Figure I can run the voip traffic out of the Ethernet interface, back to
back, or thru my other routers.
The DSL/ATM interface would be useless in a home lab, unless you are
going to use DSL anyway to connect to the internet. Wonder if I could
get a dsl provider to provide two lines, and by the way, point those atm
pvc's back at each other.
Side Note - Also wonder if anyone is replacing private T1's with private
DSL circuits. There's no reason anyone running a ATM cloud couldn't
transport atm pvc traffic coast to coast, starting at a dsl router and
ending at a dsl router. By passing the phone company and the internet
completely, but still have the new cheaper technology.
Any chance anyone knows how to do DSL/ATM back to back without a DSLAM?
It would suck a bit, to have atm interfaces that you couldn't use, in a
home lab where it could be nice to have atm running.
Maybe Simline could come out with a two port DSL emulator. That would
be sweet. A pair of 827-4V's that you could do both voip and atm on. I
sense a business opportunity.
Anyway, anyone else thinking about using the 827-v4 in their lab to do
voip?
http://www.nextag.com/Cisco_827_4V_Adsl~413652z3znzzz1zmainz2-htm
Below is the config that came on our 827 from the DSL provider. I have
edited out our information.
version 12.1
no service single-slot-reload-enable
no service pad
service tcp-keepalives-in
service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname asdf
!
logging rate-limit console 10 except errors
!
ip subnet-zero
no ip source-route
no ip finger
!
no ip dhcp-client network-discovery
!
!
!
interface Ethernet0
ip address 192.168.1.1 255.255.255.0
ip adjust-mss 1452
ip nat inside
ip tcp adjust-mss 1452
no cdp enable
!
interface ATM0
no ip address
no atm ilmi-keepalive
pvc asdf 1/132
encapsulation aal5mux ppp dialer
dialer pool-member 1
!
bundle-enable
dsl operating-mode auto
!
interface Dialer1
ip address negotiated
ip mtu 1492
ip nat outside
encapsulation ppp
ip tcp adjust-mss 1452
dialer pool 1
dialer string adsl
dialer-group 1
no cdp enable
ppp pap sent-username asdf pass 0 changed
!
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer1
no ip http server
!
ip nat inside source list 101 interface Dialer1 overload
access-list 101 permit ip 192.168.1.0 0.0.0.255 any
dialer-list 1 protocol ip permit
no cdp run
!
line con 0
exec-timeout 120 0
transport input none
stopbits 1
line vty 0 4
exec-timeout 0 0
login
length 0
!
scheduler max-task-time 5000
end
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