Re: Cisco 2610 ADSL - Page 2

scott.k.logan · ‎01-03-2008

I have a cisco 2610 with a WIC1-ADSL card, and the c2600-is4-mz version of IOS installed...

...My problem, I do believe, is in configuration. If I show interface adsl 0/0, it shows that there are packets being sent and received. On the BVI1 interface, they're only being outputted. I'm using Embarq (sprint) DSL, and they told me to use 8/35 for my vpi and vci...I have a static IP. What am I doing wrong? I can't ping the gateway from my router...?

--scott

scott.k.logan · ‎01-06-2008

Yeah, thats what I'm using now...its a "660 series" that I got from Embarq...

paolo bevilacqua · ‎01-06-2008

Ok, can you post a show dsl interface and show atm pvc x/y, and check if CRC errors on i/f are still increasing, perhaps a dsl fw issue. Config should be ok by now and should work.

scott.k.logan · ‎01-06-2008

Okay, here is the running config and the "shows" you wanted...

CNRouter Running Config:

!

version 12.3

service timestamps debug datetime msec

service timestamps log datetime msec

no service password-encryption

!

hostname CNRouter

!

boot-start-marker

boot-end-marker

!

enable secret 5 $1$XXXXXXXXXXXXXXXXXXXXXXXXXXX

!

no aaa new-model

ip subnet-zero

ip cef

!

ip name-server 65.x.x.28

ip dhcp excluded-address 192.168.1.0 192.168.1.99

!

ip dhcp pool cnpool

network 192.168.1.0 255.255.255.0

default-router 192.168.1.1

dns-server 65.x.x.28

netbios-name-server 192.168.1.6

!

username cottsay secret 5 $1$XXXXXXXXXXXXXXXX

!

interface ATM0/0

no ip address

no atm ilmi-keepalive

dsl operating-mode auto

!

interface ATM0/0.1 point-to-point

ip address 65.x.x.117 255.255.255.0

ip nat outside

pvc 8/35

encapsulation aal5snap

!

interface Ethernet0/0

ip address 192.168.1.99 255.255.255.0

ip nat inside

full-duplex

!

interface Serial0/1

no ip address

shutdown

!

no ip http server

ip classless

ip route 0.0.0.0 0.0.0.0 65.41.113.1

!

line con 0

line aux 0

line vty 0 4

password 7 XXXXXXXXXXXXXXXX

login local

!

end

CNRouter#show interfaces ATM 0/0

ATM0/0 is up, line protocol is up

Hardware is DSLSAR (with Alcatel ADSL Module)

MTU 4470 bytes, sub MTU 4470, BW 448 Kbit, DLY 4570 usec,

reliability 68/255, txload 1/255, rxload 1/255

Encapsulation ATM, loopback not set

Encapsulation(s): AAL5 AAL2, PVC mode

23 maximum active VCs, 256 VCs per VP, 1 current VCCs

VC Auto Creation Disabled.

VC idle disconnect time: 300 seconds

Last input 00:00:01, output 00:00:37, 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 1000 bits/sec, 2 packets/sec

5 minute output rate 0 bits/sec, 0 packets/sec

170 packets input, 15577 bytes, 0 no buffer

Received 0 broadcasts, 0 runts, 0 giants, 0 throttles

0 input errors, 51 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort

5 packets output, 460 bytes, 0 underruns

0 output errors, 0 collisions, 2 interface resets

0 output buffer failures, 0 output buffers swapped out

CNRouter#show interfaces ATM 0/0.1

ATM0/0.1 is up, line protocol is up

Hardware is DSLSAR (with Alcatel ADSL Module)

Internet address is 65.41.113.117/24

MTU 4470 bytes, BW 448 Kbit, DLY 4570 usec,

reliability 86/255, txload 1/255, rxload 1/255

Encapsulation ATM

214 packets input, 19446 bytes

5 packets output, 460 bytes

0 OAM cells input, 0 OAM cells output

AAL5 CRC errors : 0

AAL5 SAR Timeouts : 0

AAL5 Oversized SDUs : 0

Last clearing of "show interface" counters never

Question...what about NAT? Is NAT configured correctly? I did the "ip nat inside" and "ip nat outside", but I think I remember there being more to configuring NAT...

Another question...may seem dumb...but what is CRC? Is it bad?

--scott

paolo bevilacqua · ‎01-07-2008

I doubt this will ever work unless yo get a clean circuit - crc's are transmission errors.

Possibly an IOS upgrade can get you new FW - the one you have doesn;t even show what version is it, try show controllers.

I also think you shouls use a BVI config for this. For NAT you only miss "ip nat inside source list 10 interface bvi1 overload" and 'access-list 10 permit ip 192.168.1.0 255.255.255.0". bvi woulr be replace with atm0/0.1 for a routed 1482 encapsulation.

chschroe · ‎01-07-2008

I would expect CRCs on an ADSL line. I mean, its DSL. Runs over house pairs. Goes a long way. Etcetera, and so forth.

I think the original config was probably right, I asked because I thought this might have been a business DSL routed sort of line, rather than a consumer line that had a modem on it before.

For that, it is certainly not correct anymore. Move the ip address back to a BVI, and delete it from the ATM PVC. After that, make sure that the encapsulation on the interface actually changes to AAL5 and RFC1483. Right now, it is AAL2. Then, verify the ATM interface is in the bridge table (show bridge 1) and try to ping the default gateway from the router, sourced from int BVI1 (ping x.x.x.x source bvi1).

If all that works, then you can add the nat stuff back. You were just missing an access list that matches your inside lan subnet.

NS

scott.k.logan · ‎01-07-2008

Alright, please look at the other post for my new config, but I still can't ping...even with the 'source bvi1' on the tail. Here's my show bridge 1...it looks right to me.

CNRouter#show bridge 1

Total of 300 station blocks, 299 free

Codes: P - permanent, S - self

Bridge Group 1:

Address Action Interface Age RX count TX count

0030.8803.459b forward ATM0/0 3 37 0

...and if you'll notice in the show int for the atm, it shows AAL5 AND AAL2...

thanks,

--scott

scott.k.logan · ‎01-07-2008

Alrighty, so here's my new configuration:

!

version 12.3

service timestamps debug datetime msec

service timestamps log datetime msec

no service password-encryption

!

hostname CNRouter

!

boot-start-marker

boot-end-marker

!

enable secret 5 xxxxxxxxxxxxxxxxxx

!

no aaa new-model

ip subnet-zero

ip cef

!

ip name-server 65.41.112.28

ip dhcp excluded-address 192.168.1.0 192.168.1.99

!

ip dhcp pool cnpool

network 192.168.1.0 255.255.255.0

default-router 192.168.1.1

dns-server 65.41.112.28

netbios-name-server 192.168.1.6

!

username cottsay secret 5 xxxxxxxxxxxx

!

bridge irb

!

interface ATM0/0

no ip address

no atm ilmi-keepalive

dsl operating-mode auto

bridge-group 1

pvc 8/35

encapsulation aal5snap

!

interface Ethernet0/0

ip address 192.168.1.99 255.255.255.0

ip nat inside

full-duplex

!

interface Serial0/1

no ip address

shutdown

!

interface BVI1

ip address 65.41.113.117 255.255.255.0

ip nat outside

!

ip nat inside source list 10 interface BVI1 overload

no ip http server

ip classless

ip route 0.0.0.0 0.0.0.0 65.41.113.1

!

access-list 10 permit 0.0.0.0 255.255.255.0

!

line con 0

line aux 0

line vty 0 4

password 7 xxxxxxxxxxxxxxxxxx

login local

!

end

CNRouter#show interfaces ATM 0/0

ATM0/0 is up, line protocol is up

Hardware is DSLSAR (with Alcatel ADSL Module)

MTU 4470 bytes, sub MTU 4470, BW 448 Kbit, DLY 4570 usec,

reliability 226/255, txload 1/255, rxload 1/255

Encapsulation ATM, loopback not set

Encapsulation(s): AAL5 AAL2, PVC mode

23 maximum active VCs, 256 VCs per VP, 1 current VCCs

VC Auto Creation Disabled.

VC idle disconnect time: 300 seconds

Last input 00:00:00, output 00:02:15, 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

342 packets input, 35745 bytes, 0 no buffer

Received 0 broadcasts, 0 runts, 0 giants, 0 throttles

0 input errors, 172 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort

17 packets output, 1258 bytes, 0 underruns

0 output errors, 0 collisions, 2 interface resets

0 output buffer failures, 0 output buffers swapped out

CNRouter#show interfaces BVI 1

BVI1 is up, line protocol is up

Hardware is BVI, address is 0000.0cf0.ffe5 (bia 0004.9a8f.c920)

Internet address is 65.41.113.117/24

MTU 4470 bytes, BW 448 Kbit, DLY 5000 usec,

reliability 255/255, txload 1/255, rxload 1/255

Encapsulation ARPA, loopback not set

ARP type: ARPA, ARP Timeout 04:00:00

Last input never, output never, 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: fifo

Output queue: 0/0 (size/max)

5 minute input rate 0 bits/sec, 0 packets/sec

5 minute output rate 0 bits/sec, 0 packets/sec

0 packets input, 0 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

11 packets output, 660 bytes, 0 underruns

0 output errors, 0 collisions, 0 interface resets

0 output buffer failures, 0 output buffers swapped out

----------------------

Now here's something interesting...I tried the show controllers, and I got four of these on the console...

*Mar 2 09:51:27.531: ASSERTION FAILED: file "../les/if_dslsar_util.c", line 382

That doesn't look good...bad IOS image? Bad firmware? I have no idea...?

--scott