Re: Cisco ROuter and DS3 connection in Wireless Service Providers

Re: Cisco ROuter and DS3 connection

Thu, 17 Jul 2008 22:03:16 EDT

viperm : The cisco already has our existing network going over it so I am pretty sure routing is turned on. I made a static route to point to the upstream provider and allow us to use the /29 they gave us to test with. I am thinking there is some Vlan config in here I am missing that allows it to traverse past the sub interface.. I can get to the cisco from the outside world just fin with the new /20 Ip's they gave us just nothing beyond the cisco..

There is a switch that the cisco is plugged into with Vlans on it so I am assumign it is that but from what I can tell lookign at the switch we are plugged into a port on the same Vlan as the Cisco Lan interface. We will be plaiung with it more tonight and this next week I am sure its something really lame ;-)
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ComTrain Certified Tower Climber. American Tower Certified approved contractor. Wireless consultants.

Re: Cisco ROuter and DS3 connection

Thu, 17 Jul 2008 20:29:48 EDT

dallash : Can you ping the upstream router over the WAN from the Cisco?

Also, don't forget to turn on IP routing on the Cisco (seems like it should be default, but it's not). I've done it to myself a few times :-)

The command is (from config mode):

ip routing

Seems silly, but I've completely reconfigured a router or two when I actually all I had to do was that little command.

Dallas

Re: Cisco ROuter and DS3 connection

Thu, 17 Jul 2008 18:27:53 EDT

viperm : Thanks we only hae 256 mgs of ram so I submitted the papwer work to them and they said it will take 2 business days to process which we were going to turn up the circuit this evening but not with out our IP's I guess.

We will have to wait I guess but they did give a /29 block to play around with we haev it configured but we still cant talk to anything beyond the sub interface we created on a physical gigabit interface on the Cisco. Something in the cisco is blocking it from going to the anything beyond that physical inteface..
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ComTrain Certified Tower Climber. American Tower Certified approved contractor. Wireless consultants.

Re: Cisco ROuter and DS3 connection

Thu, 17 Jul 2008 11:03:33 EDT

cmaenginsb :

said by viperm :

What is the command if any to see if BGP is working or not?

One other question I have is the info the ISP Paetec is asking is bgp type private or public ( I assume public)??
Public ASN # which I think should be our ASN
Prefixes (our new ip subent block?)
Customers recieved routes Default, partial, patial with default, full, or full with default ???? I dont know what to choose here but I am guessing partial or patial with defualt?

here is the list of what they want

In order to establish BGP routing, you must have an Autonomous System number (ASN). If you do not have an ASN and are connected to multiple providers, you must obtain a registered ASN. If you have multiple connections with PAETEC alone and want to use BGP, PAETEC can assign a private ASN. However, if you want to later peer with an additional provider, you will need a registered ASN. You can find information on obtaining an ASN from www.arin.net.

Public ASN:

PAETEC will verify any address space you submit for BGP announcements into the global Internet. If you are using address space from another provider, you should consult with that provider to ensure your address space is being announced 'as is', and not part of a larger aggregate. This helps ensure that BGP is determining the best inbound path to you, as opposed to the way networks are being announced (failure to do this will result in BGP sending all traffic to the more-specific prefix).

Customer’s advertised routes: Specify the prefixes (network numbers and masks) that you will announce to PAETEC. Keep in mind that a /24 is the smallest announcement PAETEC accepts. Any subsequent changes to these announcements will need to be made by contacting the customer service number at 1-877-340-2555.

Prefixes: 208.79.xxx.xxx - 208.79.xxx.xxx

Prefixes:

Prefixes:

Customer's received routes: Specify the routes you would like to receive from PAETEC. If receiving full routes, the amount of memory in the customer's router is important. PAETEC recommends a minimum of 256MB of memory for this option and that a Professional Integrator be consulted for exact requirements.

Customer's received routes: 0 Default 0 Partial 0 Partial w/default 0 Full 0 Full w/default

Additional Information:
Peering Address:

MD5 Password:
(Optional)

PAETEC Managed: 0 Yes 1 No

Equipment Type: Cisco 3825
How many cpe routers: 1
List other ISPs:

Are you advertising PAETEC address space to other providers? 0 Yes 0 No

Are the other BGP sessions in service? 0 Yes 0 No

Are we testing failover during the BGP activation? 0 Yes 0 No

For ISPs:

Transit ASNs:

Transit IP Routes:

Additional Requirements:

said by Believer :

Only the ISP can tell you if it is the correct DS3 card. However, I'd assume it's correct for a non-ATM circuit. Setting the IP address is just like setting it on any other Cisco interface:

interface Hssi2/0
ip address 4.X.X.114 255.255.255.252
ip broadcast-address 4.X.X.115
no ip directed-broadcast
no ip mroute-cache
!

Basic BGP is also easy:
router bgp
network
ip neighbor 4.X.X.113 remote-as
ip route 0.0.0.0 0.0.0.0 4.X.X.113

If you've played with a Cisco config that looks something like this, you are good to go.

If you have an AS # already in use then it will be public
Prefixes is what you said, the subnets you want to advertise
Recieved routes is how much BGP they will filter to you.
default means you have 1 route from your router to PAETEC, partial means you will have some routes to networks beyond PAETEC (this can be helpful for setting up load balancing as it might be quicker to get to google via PAETEC and DSLR through your existing provider). Full means you get every BGP route they get. Think long and hard about full, it will require 512 Mb of memory due to the size of the routing table.

Re: Cisco ROuter and DS3 connection

Thu, 17 Jul 2008 08:59:20 EDT

viperm : What is the command if any to see if BGP is working or not?

One other question I have is the info the ISP Paetec is asking is bgp type private or public ( I assume public)??
Public ASN # which I think should be our ASN
Prefixes (our new ip subent block?)
Customers recieved routes Default, partial, patial with default, full, or full with default ???? I dont know what to choose here but I am guessing partial or patial with defualt?

here is the list of what they want

In order to establish BGP routing, you must have an Autonomous System number (ASN). If you do not have an ASN and are connected to multiple providers, you must obtain a registered ASN. If you have multiple connections with PAETEC alone and want to use BGP, PAETEC can assign a private ASN. However, if you want to later peer with an additional provider, you will need a registered ASN. You can find information on obtaining an ASN from www.arin.net.

Public ASN:

PAETEC will verify any address space you submit for BGP announcements into the global Internet. If you are using address space from another provider, you should consult with that provider to ensure your address space is being announced 'as is', and not part of a larger aggregate. This helps ensure that BGP is determining the best inbound path to you, as opposed to the way networks are being announced (failure to do this will result in BGP sending all traffic to the more-specific prefix).

Customer’s advertised routes: Specify the prefixes (network numbers and masks) that you will announce to PAETEC. Keep in mind that a /24 is the smallest announcement PAETEC accepts. Any subsequent changes to these announcements will need to be made by contacting the customer service number at 1-877-340-2555.

Prefixes: 208.79.xxx.xxx - 208.79.xxx.xxx

Prefixes:

Prefixes:

Customer's received routes: Specify the routes you would like to receive from PAETEC. If receiving full routes, the amount of memory in the customer's router is important. PAETEC recommends a minimum of 256MB of memory for this option and that a Professional Integrator be consulted for exact requirements.

Customer's received routes: 0 Default 0 Partial 0 Partial w/default 0 Full 0 Full w/default

Additional Information:
Peering Address:

MD5 Password:
(Optional)

PAETEC Managed: 0 Yes 1 No

Equipment Type: Cisco 3825
How many cpe routers: 1
List other ISPs:

Are you advertising PAETEC address space to other providers? 0 Yes 0 No

Are the other BGP sessions in service? 0 Yes 0 No

Are we testing failover during the BGP activation? 0 Yes 0 No

For ISPs:

Transit ASNs:

Transit IP Routes:

Additional Requirements:

Re: Cisco ROuter and DS3 connection

Thu, 03 Jul 2008 19:55:06 EDT

sporkme :

said by viperm :

Okay they installed the card and its confirmed it is an ATM card but nothing is working

Yeah, see that post I made way up there? :)

Here's the Cisco page describing what's what on the 3800 series:

»www.cisco.com/en/US/prod/collate···8e8.html

Down towards the bottom is a list of supported modules. For a clear-channel T3, it looks like you want the NM-1T3/E3 which is a clear-channel card that supports T3s or E3s (european). Looks like about $4K to $6K depending on whether you go used or new.

Regarding BGP you still need not run it yourself. Look at multihop BGP (I think that's the term). We did this for customers long ago - a customer ran a BGP session with our upstream when we were single-homed but not running BGP to the upstream.

Re: Cisco ROuter and DS3 connection

Thu, 03 Jul 2008 15:20:21 EDT

viperm : Okay they installed the card and its confirmed it is an ATM card but nothing is working PAtec is lost on it they seem to think they are terminating into an ethernet handoff..

SCE (Southern California edison) terminated their fiber into a fiber breakout box ( I wall it that) then from there its converted to the BNC coax into the cisco card in the router.

I Called several places and they are talling me if its a straight thru DS-3 then it should be NM-1t3-e3 card not NM-1A-T3

can anyone confirm this for me if that part # would be correct??

Thanks
--
ComTrain Certified Tower Climber. American Tower Certified approved contractor. Wireless consultants.

Re: Cisco ROuter and DS3 connection

Thu, 03 Jul 2008 14:18:53 EDT

viperm : I have that one alredy and was looking at it ;-)

Re: Cisco ROuter and DS3 connection

Thu, 03 Jul 2008 12:50:46 EDT

VariableARK : viperm I would recommend the BGP Oreilly book, I read that a few years back when we implemented BGP and it helped me out a lot!

Re: Cisco ROuter and DS3 connection

Wed, 02 Jul 2008 22:11:07 EDT

viperm : I guess this is paetec giving them the circuit but the bandwidth is thru SOCAL edison dark fiber etc strange!!!

but the other thing I have found out is that they have to do BGP in this router due to the fact they have a customer who they also annoucne their BGP info.

This router is already configured for that customer so I dont think it is as bad is it really seems to be.

They put in the card last night without any hitches and according to them they have sync and are now just waiting for the IP info which him and I will work on over the 4th weekend..
--
ComTrain Certified Tower Climber. American Tower Certified approved contractor. Wireless consultants.

Re: Cisco ROuter and DS3 connection

Wed, 02 Jul 2008 01:48:08 EDT

sporkme :

said by viperm :

So I can announce the ASN without having to do BGP???

Yes. See your other thread as well:

»[HELP] Cisco Router configuring DS-3

Paetec is able to announce the block on your behalf, and unless they're douchebags (possible), they will do it if you ask. If you are single-homed there's no real advantage to adding a complex protocol that is not easy to fully understand into the mix.

In short, it will likely not contribute to less downtime. :)

Re: Cisco ROuter and DS3 connection

Wed, 02 Jul 2008 01:42:05 EDT

viperm : I dont know about the card but I have been reading other Cisco posts on the Cisco forum and it appears this is the correct card..

So I can announce the ASN without having to do BGP???

What would be the advantages of running IBGP or BGP (what does the I mean??) Vs not running it all. If they are not planning on keeping their other service provider would it make sense to even use BGP? I was under the impression you needed to enable it in order to announce the ASN properly?

Also how can you tell if its a DS-3 ATM version instead of the regular NON ATM version? I assume running a show config will show it as an ATM interface instead of a HSSI or Serial interface??

Thanks
--
ComTrain Certified Tower Climber. American Tower Certified approved contractor. Wireless consultants.

Re: Cisco ROuter and DS3 connection

Tue, 01 Jul 2008 22:37:42 EDT

battleop : I think the NM-1A-T3 is an ATM card. I don't see any real advantage for you to setup BGP. If you are going to run ibgp throughout your network then run BGP. If not then just set up a default route.

If you are dealing with Paytech(USLec) then you will need all the luck in the world :)

Re: Cisco ROuter and DS3 connection

Tue, 01 Jul 2008 20:59:21 EDT

Believer : Sorry, the formatting got screwed up because I used HTML type characters for where to put your information. Look at it again and it will show where to put you ASN and ISPs ASN.

BGP will announce your routes to a single ISP or multiple depending on what you put in your "router bgp" setup. If you have your own IP range, you'll need to announce it from your router and this requires BGP. Unless, you get your ISP to announce it for you.

Paetac will need to know your ASN to setup their end. Their config would look similar to yours with the other end of the IP address for the gateway and the ASNs swapped in the "router bgp" statement.
--
Comtrain Certified Tower Climber

Re: Cisco ROuter and DS3 connection

Tue, 01 Jul 2008 20:45:16 EDT

viperm : Thanks B that helps so when I do a show config I should see the new card as HSSI? or will it be serial interface?

I always thought BGP was used for when you are doing multiple routes out to different ISP's providing bandwidth? so you can use it when doing one bandwidth provider e to annoucne the AS /asn Number

Where would I put their AS / ASN number in the Cisco and would Paetac also have to do something on their end as well to annouce routes his way etc?? IN other words do we have to tell paetec what the AS/ASN number is and they know what to do with it from there?
--
ComTrain Certified Tower Climber. American Tower Certified approved contractor. Wireless consultants.

Re: Cisco ROuter and DS3 connection

Tue, 01 Jul 2008 20:37:38 EDT

Believer : Only the ISP can tell you if it is the correct DS3 card. However, I'd assume it's correct for a non-ATM circuit. Setting the IP address is just like setting it on any other Cisco interface:

interface Hssi2/0
ip address 4.X.X.114 255.255.255.252
ip broadcast-address 4.X.X.115
no ip directed-broadcast
no ip mroute-cache
!

Basic BGP is also easy:
router bgp
network
ip neighbor 4.X.X.113 remote-as
ip route 0.0.0.0 0.0.0.0 4.X.X.113

If you've played with a Cisco config that looks something like this, you are good to go.
--
Comtrain Certified Tower Climber

Re: Cisco ROuter and DS3 connection

Tue, 01 Jul 2008 20:20:07 EDT

viperm : Okay guys here is the scoop they have an existing Cisco 3825 they are going to install a Cisco Nm-1A-T3 card and its a straight DS-3 45 meg Circuit..

Here is the other info I found out.. They now have their own Arin allocated IP scheme.

I have never worked with AS stuff so I dont know where to begin. Do we have to Enable BGP in order for their AS / routing info to be "announced" thru the ISP (paetec)

IS this the correct serial DS-3 card to work with this setup??

Thanks
--
ComTrain Certified Tower Climber. American Tower Certified approved contractor. Wireless consultants.

Re: Cisco ROuter and DS3 connection

Sat, 28 Jun 2008 13:13:52 EDT

viperm : Thanks guys for the info... Still trying to get in touch with my buddy to get specifics on card and router I do know the card is a Cisco card and they bought something like an 8500 series router if that makes any sense. As far as the channelized I have no idea what they ordered. I assume its ON since it is going to replace or suplement their existing 20 meg connection.

As far as BGP they have not set that up nor do I think they are but I am guesing if they keep the other 20 meg they can do BGP betweem the two providers. I dont think they have an AS number or even own their own IP schemes so it will be a long list of things to accomplish to get those if they go that route..
I will keep you all posted..
--
ComTrain Certified Tower Climber. American Tower Certified approved contractor. Wireless consultants.

Re: Cisco ROuter and DS3 connection

Sat, 28 Jun 2008 08:37:04 EDT

battleop : I've set up 3 different types of DS3s in our routers. We have a DS3 Serial Card that goes back to our upstream provider, a DS3 ATM card that goes back to AT&T to aggregate our DSL customers and a Channelized card that is used to aggregate our T1 customers.

They are not hard to configure. The hard part is making sure you have the right card. If you run into trouble you can ask here or on the cisco-nsp list and someone should be able to help you out.

Re: Cisco Router and DS3 connection

Sat, 28 Jun 2008 07:53:53 EDT

deepblackmag : Yes, as others have stated there are various different DS3 cards.
There are channelized vs clearchannel vs ATM, but those are the ones with an internal CSU/DSU. With an external DS3 DSU such as a digital-link or larscom, you would want a HSSI port to interface with that.
The right card depends on whats going to be delivered by the telco, and what equipment he has.
I have setup many of these terminating in cisco 7200 and 7500 series. No, you dont want any other vendors router, stick with cisco for several reasons. DSU mode should be configured to match on both sides so features such as scrambling will function as desired. Unless instructed by the telco i would not configure the dsu bandwidth command, which is usually reserved for subrate DS3s.
I would deffinetly NOT count on the telco to configure it for you, or tell you how. When i was with a certain large US telco we were expressly forbidden to configure customer equipment, under threat of summary firing due to liability. Most will provide a sample configlet, but it needs to be at the very least adapted to meet the needs of the specific implementation.

Drop me a PM and ill send you my email address. There are alot of things to consider. I have seen alot of quirks with DS3s in particular especially when sent through fuji flashwaves upstream after it hits a mux.

Re: Cisco ROuter and DS3 connection

Sat, 28 Jun 2008 03:12:09 EDT

cmaenginsb : Sporkme is right about the DS-3 card. I've done several links this way.

The DS-3 card in the router comes up as a serial interface. To configure it you will need the framing if it is a clear channel DS-3, this should be provided by the service provider..

The following are the only commands I use to setup a clear channel DS-3
framing c-bit
cablelength 10
dsu bandwidth 44210
serial restart-delay 0

What model router is going to be used and are they going to run BGP?

I wouldn't use bridging, after all the Cisco will do everything the MT can with respect to routing. I generally put the MT in bridge mode for the bandwidth controller.

If you really want to route, put the WAN on the DS-3 and use a /30 between the Cisco and Mikrotik.
--
CCNA, Comtrain Certified Tower Climber

Re: Cisco ROuter and DS3 connection

Sat, 28 Jun 2008 00:24:13 EDT

sporkme : Make sure he gets the right T3 card. There is an ATM version and a "normal" version (I think PA-A3-T3 vs. PA-T3). Not knowing what he ordered, I can't say what the telco would deliver. It's likely a clear channel T3, but it could be ATM...

Re: Cisco ROuter and DS3 connection

Fri, 27 Jun 2008 23:47:50 EDT

mtroup : When I ordered my T1 the AT&T Tech I spoke with gave me exact commands to type it get it going.. I would hope other's would be helpful too?

Re: Cisco ROuter and DS3 connection

Fri, 27 Jun 2008 23:46:31 EDT

PCInformatio : The ISP should provide the line coding information. Depending on how cooperative they are, sometimes they'll even give you a hand with it.

What model of Cisco?

If you like, I'll send you a config that we use in a 7200 series.

Peace,

Dan

Re: Cisco ROuter and DS3 connection

Fri, 27 Jun 2008 23:25:29 EDT

DaSneaky1D : Have they ever set up a T1 on a router? If so, it can be as easy at that.
--
:: my trivial ramblings ::

Re: Cisco ROuter and DS3 connection

Fri, 27 Jun 2008 23:21:47 EDT

AMD Phreak : It depends on your ISP but I would say if it is a BOC, no they will not help.

I would move this to the Cisco forum personally. I do not have any DS3 experience at this time but perhaps others might.

Cisco ROuter and DS3 connection

Fri, 27 Jun 2008 23:04:37 EDT

viperm : Anyone ever set one up from scratch I have a Wisp friend of mine getting a DS-3 real soon and he wanted to know if I knew how to set it up?

Is it straight forward or is it complicated? I would assume the DS-3 card would be treated like any other interface? It being my WAN and the ether 0/0 being my lan port with public or private IP's on it.

I was suggesting setting it up in what I would call bridge mode and run everything thru a beefed up Mikrotik unit.

Will the ISP (phone company etc) provide us with the confgiuration info for the DS-3 interface and what not? I assume he is keeping his old IP scheme and putting the existing IP's on the new DS-3..

Any pointers would be helpful..

Thanks
--
ComTrain Certified Tower Climber. American Tower Certified approved contractor. Wireless consultants.