05-21-2007 11:18 AM - edited 03-03-2019 05:04 PM
Hi All,
I'm trying to setup an ADSL connection on an 827H router. The settings for the connection according to the ISP are:
Mode = RFC 1483 Routing
VPI = 0 VCI = 34
Protocol = ENET ENCAP/LLC
Multiplexing = LLC
Encapsulation = AAL5 Snap
The connection is currently up and running with these settings on a very cheap modem/router. It gets an IP from the ISP by DHCP without specifying an username/password. I'm trying to migrate the connection to the 827H. This is what I,ve configured:
<SNIP>
interface ATM0
mac-address 0005.b409.2528
no ip address
no atm ilmi-keepalive
dsl operating-mode auto
!
interface ATM0.1 point-to-point
ip address dhcp
no snmp trap link-status
pvc 0 0/34
broadcast
encapsulation aal5snap
<SNIP>
The MAC I'm specifying is the MAC that the current modem/router is using, so that the ISP does not need to refresh. The connection seems to come up on the ATM side of things:
Router#sh int atm0
ATM0 is up, line protocol is up
Hardware is PQUICC_SAR (with Alcatel ADSL Module)
MTU 1500 bytes, sub MTU 1500, BW 928 Kbit, DLY 80 usec,
reliability 152/255, txload 1/255, rxload 1/255
Encapsulation ATM, loopback not set
Encapsulation(s): AAL5 AAL2, PVC mode
10 maximum active VCs, 1024 VCs per VP, 1 current VCCs
VC Auto Creation Disabled.
VC idle disconnect time: 300 seconds
Last input never, output 00:00:08, output hang never
Last clearing of "show interface" counters never
Input queue: 0/75/0/0 (size/max/drops/flushes); Total output drops: 0
Queueing strategy: Per VC Queueing
5 minute input rate 0 bits/sec, 0 packets/sec
5 minute output rate 0 bits/sec, 0 packets/sec
3 packets input, 246 bytes, 0 no buffer
Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
66 packets output, 30464 bytes, 0 underruns
0 output errors, 0 collisions, 4 interface resets
0 output buffer failures, 0 output buffers swapped out
Router#
But I don't seem to get an IP address:
Router#sh ip int brief
Interface IP-Address OK? Method Status Prot
ocol
Ethernet0 10.10.10.1 YES NVRAM up up
ATM0 unassigned YES NVRAM up up
ATM0.1 unassigned YES DHCP up up
Attached you will find some output of the debug atm events and dhcp detail command. Any Ideas? Thanks in advance for your help.
Best regards,
Wouter
05-21-2007 04:54 PM
Hello,
possibly the ISP is expecting briding mode so you would need to configure
bridge irb
int atm0.1
no ip address
bridge-group 1
int bvi1
ip address dhcp
ip nat inside
07-12-2007 07:38 AM
Hi
Did you get this sorted? I have a Cisco 877w with the same problem. I cannot obtain a DHCP address.
Thanks.
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