| Interfaces "ATM0", "Ethernet0"... configuratHello and thank you for reading my post.
My Cisco router is a "CISCO 887 VA" router.
It is connected to a "normal" computer through a light blue serial cable.
I'm using an "hyperterminal" to issue commands to it.
I would like the computer connected to the router to be able to browse the Internet.
hyperterminal> show version
Cisco IOS Software, C880 Software (C880DATA-UNIVERSALK9-M), Version 15.1(4)M3, RELEASE SOFTWARE (fc1) [...]
I just reset the router to its factory defaults so that what I've tried before doesn't interfere with my questioning here.
hyperterminal> show ip interface
ATM0 is administratively down, line protocol is down
Internet protocol processing disabled
Ethernet0 is administratively down, line protocol is down
Internet protocol processing disabled
FastEthernet0 is up, line protocol is up
Internet protocol processing disabled
FastEthernet1 is down, line protocol is down
Internet protocol processing disabled
FastEthernet2 is down, line protocol is down
Internet protocol processing disabled
FastEthernet3 is down, line protocol is down
Internet protocol processing disabled
Vlan1 is up, line protocol is up
Internet protocol processing disabled
What I want: I want the router to be connected on one end to the Internet and on the other end to a set of computers which want to access the Internet.
I don't understand what these interfaces "ATM0", "Ethernet0", "FastEthernet0", "FastEthernet1", "FastEthernet2", "FastEthernet3" and "Vlan1" are and I don't know which ones I have to configure and how.
Can you help me?
Thank you and best regards.
--
Below is the router current running configuration:
hyperterminal# show running-config
Current configuration : 1005 bytes
!
! No configuration change since last restart
version 15.1
no service pad
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname Router
!
boot-start-marker
boot-end-marker
!
!
!
no aaa new-model
!
memory-size iomem 10
crypto pki token default removal timeout 0
!
!
ip source-route
!
!
!
!
!
ip cef
no ipv6 cef
!
!
multilink bundle-name authenticated
license udi pid CISCO887VA-SEC-K9 sn FCZ16099472
!
!
!
!
!
!
controller VDSL 0
!
!
!
!
!
!
interface Ethernet0
no ip address
shutdown
no fair-queue
!
interface ATM0
no ip address
shutdown
no atm ilmi-keepalive
!
interface FastEthernet0
no ip address
!
interface FastEthernet1
no ip address
!
interface FastEthernet2
no ip address
!
interface FastEthernet3
no ip address
!
!
interface Vlan1
no ip address
!
ip forward-protocol nd
no ip http server
no ip http secure-server
!
!
!
!
!
!
!
!
control-plane
!
!
line con 0
line aux 0
line vty 0 4
login
transport input all
!
end |
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macallah
join:2003-01-22
Wichita Falls, TX | Re: Interfaces "ATM0", "Ethernet0"... config Essentially you have a a blank configuration.
The FastEthernet0-3 interfaces are for the LAN side of the router.
Essentially you create a VLAN and assign it to an interface. So, for example you can have several different LANs internally. In a simple configuration you would just have 1 VLAN and assign it to all 4 interfaces. For example you could have the VLAN be 192.161.1.x and have the router have the address of 192.168.1.254.
The ATM interface is the DSL interface. You will need some information from your DSL provider on how to configure it. Some are direct connections, some use PPPOE login credentials, DHCP or static IP addresses, etc.
Check out the FAQ »Cisco Forum FAQ for a lot of answers. Configuring the router can be quite involved depending on what you are planning to do with it.
There is an graphical interface for the configuration called Cisco Configuration Professional. It can do basic setups of the router. |
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| reply to Lea Massiot
What type of internet do you have? 887VA should have 1x RJ11 jack that connects to a xDSL connection (your WAN
connection) and 4x ethernet ports (your LAN connection).
I agree with macallah in that you may want to read the FAQ for a config you can use.
Regards |
|
| reply to Lea Massiot
Thank you for your answers.
@macallah
Thank you for your explanations: they are totally useful to me.
- How can I check which interface(s) "VLAN1" has been assigned to?
- What about the interface "Ethernet0"?
- I have "CCP" installed but it's not a lot more intuitive than command line to me and also, I can find a good manual... which is not a Bible.
@hellfire
> What type of Internet do I have?
I don't know what kind of answer you are expecting... Please help.
Cisco 887VA is exactly as you describe.
Best regards. |
|
bigsy
join:2001-07-18
ireland
kudos:1
1 edit | FastEthernet 0-3 will by default be in VLAN1.
With this router your Internet service should be either ADSL or VDSL. Your router supports either ADSL (interface ATM0) or VDSL2 (packet transfer mode, PTM, interface Ethernet0) using controller VDSL0 via the RJ11 interface. Both cannot be active at once.
Who is your ISP and what sort of Internet service have you signed up for? |
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aryobaPremium,MVM
join:2002-08-22
kudos:3 | reply to Lea Massiot
Lea Massiot  , here are some documentations on the Cisco website which might help further. » www.cisco.com/en/US/prod/collate···481.html» www.cisco.com/en/US/docs/routers···95d.htmlI think what HELLFIRE meant of "what type of Internet do I have" is the following * Whether you have ADSL or VDSL service (OSI Layer 1) * How your ISP provides OSI Layer-2/3 connectivity, whether through PPPoE, DHCP, static IP address You seem to have some basic understanding of networking and some IOS commands, which is helpful. A ? command will show what commands are available to issue with some descriptions. Further commands to help you configure are available in the links I provided above. Some quick IOS commands are here * A show vlan-switch to find out which interface belongs to which VLAN * A show license to find out what kind of license the router has to determine whether specific IOS commands are available or else The router is a CISCO887VA-SEC-K9 that support IPSec VPN tunnel configuration, which is preferred if you need to setup such tunnel. |
|
| reply to Lea Massiot
Thank you for your answers.
@bigsy
- Indeed, "FastEthernet 0-3" are by default in "VLAN1".
I could check this thanks to @aryoba's command:
# show vlan-switch
- My ISP is "Orange".
- I've subscribded to an "ADSL" service with a fixed IP address.
So I guess I'll be interested in the "ATM0" interface then.
(Thank you so much for these useful precisions about "ATM0" and "Ethernet0".)
@aryoba
Thank you for the links and the various other explanations.
I indeed bought this router (actually two of them) to set up a VPN tunnel...
Best regards. |
|
| reply to Lea Massiot
Hi again.
I've been trying a few things.
- It's not obvious to me which configuration I should choose in the document @aryoba pointed me to (»www.cisco.com/en/US/docs/routers···95d.html)
I have tried the section "Configuring ADSL mode" with no "conclusive results".
- I also tried that kind of configuration:
»Cisco Forum FAQ »ADSL router configuration for PPPoA/PPPoE with NAT
... but "it doesn't work" and I've no idea where to start to find out what's wrong
and moreover I wish I could understand a bit more about all these invocations
and know a few tricks to diagnose problems properly one by one.
- Also, I've seen this "Dialer0" interface pretty often
but I don't know what it is. My current old Cisco router has such an interface.
- The router has to have at least one public IP (say W.X.Y.Z)
and a private IP on the LAN (say 192.168.0.1).
Which interface receives which address and how?
Sorry for being so messy  .
Best regards. |
|
aryobaPremium,MVM
join:2002-08-22
kudos:3 | reply to Lea Massiot
said by Lea Massiot:- My ISP is "Orange".
- I've subscribded to an "ADSL" service with a fixed IP address.
Some ISP refers fixed IP address as a lot of things. One ISP could mean static IP address with DHCP sticky approach. Other ISP could mean DHCP with association of specific MAC address of the customer's equipment's MAC address (in this case, the router's WAN interface). Others could simply mean PPP, either PPPoE or PPPoA.
First step I suggest is to reach out to your ISP and get all of these info (if you have not done so) since these info are essential to determine which suitable router configuration is. |
|
| reply to Lea Massiot
Thank you for your answer.
I phoned my ISP yesterday but didn't get much information.
So I'll have to phone again, no doubt about that.
Yet, can I ask a few more questions before I do so
(because I don't really know what to ask and how)?
The Cisco 887VA is a modem-router, right?
If I had a modem on the one hand and a router on the other hand,
I would probably be less confused (even though I'm not sure about that).
I think I definitely need to separate the concerns:
first of all: configure the "modem part" of the Cisco 887VA
and then the "router part", the NAT...
So, a question I am asking myself is the following:
what is the part of the configuration / the set of commands
on the Cisco 887VA dedicated to the "modem part" of this device?
I need to know that to be able to ask all the parameters I need to get started with connecting
the Cisco 887VA to the Internet.
In this article [»en.wikipedia.org/wiki/Pppoe]
I've been reading such things as:
- "PPPoE-speaking DSL services where a PPPoE-speaking modem-router connects to the DSL service",
- "the term PPPoE is used sometimes inaccurately to refer to [...] on the DSL side of things,
a part of a protocol stack (part group of nested protocols) which is PPPoEoA."
Etc.
I wish I could:
1) Configure the "modem part" of the Cisco 887VA.
2) Test this configuration.
Here, to me, "MODEM" has nothing to do with IP
so I guess, at this point I won't have a public static IP address set for the Cisco 887VA.
So:
3) Set the public static IP address of the router.
4) Test this IP.
5) Set a private IP address (LAN address) for the Cisco 887VA and configure the NAT.
At this point, if I've done things properly, I'll be happy and the rest will hopefully be easier.
Does this makes sense, is it possible that way?
Again, I really need to separate the concerns or I'll go on and on being lost 
Thank you for helping and best regards. |
|
aryobaPremium,MVM
join:2002-08-22
kudos:3 | said by Lea Massiot:The Cisco 887VA is a modem-router, right?
The Cisco documentation I provided in the earlier post has details on this. As a quick recap, yes it is a modem-router combo although some ISP technical support call them simply a "regular modem"
said by Lea Massiot:So, a question I am asking myself is the following:
what is the part of the configuration / the set of commands
on the Cisco 887VA dedicated to the "modem part" of this device?
Before you get on this part, you need to acquire the pertinent info from your ISP in regards of Layers 1-3 such as VCI/VPI value for ADSL services and DHCP/PPP/static since the way you configure the router highly depends on these ISP network settings.
said by Lea Massiot:I need to know that to be able to ask all the parameters I need to get started with connecting the Cisco 887VA to the Internet.
There is a FAQ on this forum that has list of questions for ISP to provide in order to get you going. Here is a start.
»Cisco Forum FAQ »Things to expect when setup network for home or small business
In addition, you should go through all sample configurations on this forum's FAQ related to DHCP/PPP/static IP address to get a better idea of how in general the router configuration should look like. You can then tweak any parameter whenever necessary or required. |
|
| reply to Lea Massiot
said by Lea Massiot:I think I definitely need to separate the concerns: I always recommend this link for any DSL config / troubleshooting.
First get your ISP to tell you what type of service you have -- PPPoE, PPPoA, bridged, or routed. Then
like aryoba says, the VPI / VCI information, whether it's a static or dynamic IP address assignment, etc.
If you haven't learned it already, the 887VA is by NO MEANS plug-and-play. Not to say it can't be done,
but you have to be willing to invest time and effort into it. Once you do, I think you'll find it well
worth everything.
Dumb question, did you get an ISP-supplied xDSL modem that had some rudiments of management by yourself
that included information like modem stats, line SNR ratios, etc? That may come in handy in helping to
determine the settings to use on the 887VA.
Regards |
|
| Hello and thanks a lot for your answers.
@aryoba (»/profile/676954)
Thanks a lot for this link (»Cisco Forum FAQ »Things to expect when setup network for home or small business) which is a very good entry point for me... and for the various advices!
@HELLFIRE (»/profile/1691829)
Thank you too.
No, I didn't get an ISP-supplied modem.
I'm going to browse the links you gave me (I've already started), phone my ISP when ready and maybe come back to you afterwards, if I may...
Have a good week-end and best regards. |
|
| reply to Lea Massiot
Hello fellows,
Here are the information I could gather from my ISP:
At layer 2 of the OSI model, "Orange" provides an ATM connectivity
with the corresponding VPI/VCI pair 8/35.
More precisely, it provides a PPPoA service.
I have a PPP username U and a password P.
The authentication method is PAP (but it's not 100% sure, it could be CHAP).
At layer 3, I have a static public IP I allocated via PPP with a netmask N.
Here it is. Is there something missing?
Thank you and best regards. |
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| reply to Lea Massiot
Should be about everything you need... try out those resources and let us know how it goes.
Regards |
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aryobaPremium,MVM
join:2002-08-22
kudos:3 | reply to Lea Massiot
It sounds like you need the following sample configuration as a start.
»Cisco Forum FAQ »Configuring router with integrated ADSL modem running PPPoA |
|
| reply to Lea Massiot
Hello fellows,
The configuration I end up with works now!
The below configuration allows me to ping the Internet (public IP addresses) from the router and from machines in the router's LAN ("vlan1").
In the end, the PPP authentication method wasn't "PAP" but "CHAP".
Here are some useful documents which helped me (apart from those you fellows pointed me to of course :)):
- "PPPoA Baseline Architecture" »www.cisco.com/en/US/tech/tk175/t···d2.shtml
- "PPPoA Online Form" »www.cisco.com/en/US/tech/tk175/t···ad.shtml
- "ADSL router configuration for PPPoA/PPPoE with NAT" »Cisco Forum FAQ »ADSL router configuration for PPPoA/PPPoE with NAT
- "Cisco DSL Router Configuration and Troubleshooting Guide" »www.cisco.com/en/US/tech/tk175/t···shtml#l2
- "NAT Routemaps Outside-to-Inside Support" »www.cisco.com/en/US/docs/ios/12_···o2n.html
- "Configuring NAT Overload On A Cisco Router" »www.firewall.cx/cisco-technical-···oad.html
Here are the commands I issued:
> enable
# configure terminal
(config)# interface vlan 1
(config-if)# ip address 192.168.0.1 255.255.255.0
(config-if)# no shutdown
(config-if)# exit
(config)# interface dialer 0
(config-if)# dialer pool 1
(config-if)# ip address negotiated
(config-if)# encapsulation ppp
(config-if)# ppp chap hostname hostname_given_by_isp
(config-if)# ppp chap password password_given_by_isp
(config-if)# no shutdown
(config-if)# exit
(config)# interface atm 0
(config-if)# pvc 8/35
(config-if-atm-vc)# encapsulation aal5mux ppp dialer
(config-if-atm-vc)# dialer pool-member 1
(config-if-atm-vc)# no shutdown
(config-if)# exit
(config)# ip route 0.0.0.0 0.0.0.0 dialer 0
At this point, from the router, I can ping:
- a public IP address on the Internet for example: 74.125.230.227
- the private IP address 192.168.0.1
Here is the NAT configuration which allows machines connected to the router in the router's LAN to ping the Internet:
(config)# interface vlan 1
(config-if)# ip nat inside
(config-if)# exit
(config)# interface dialer 0
(config-if)# ip nat outside
(config-if)# exit
(config)# access-list 1 permit 192.168.0.0 0.0.0.255
(config)# ip nat inside source list 1 interface dialer 0 overload
(config)# exit
At this point, I can ping a public IP address on the Internet (for example 74.125.230.227) from a computer in the router's LAN (the computer's IP address being for instance 192.168.0.2).
When pinging 74.125.230.227, you can use the following command on the router to see the router performing NAT:
# show ip nat translations
Save the current running configuration:
# copy running-config startup-config
Thanks a lot for helping me on this topic and for your warm welcome.
Best regards. |
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aryobaPremium,MVM
join:2002-08-22
kudos:3
1 edit | Finally you get some results after all of those efforts. Congrats
Some notes though.
* You should have the following commands in place under the Dialer0 interface in order to get proper default gateway and DNS server info; superseding the ip route 0.0.0.0 0.0.0.0 dialer 0
ppp ipcp dns request accept
ppp ipcp route default
ppp ipcp address accept
* You may need to tighten your network security by putting at least basic CBAC configuration. Go through this forum's FAQ for ideas |
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