ADSL and dialer interface
Hi
I was wondering if you can use things such as dialer watch when you use a dialer interface on an ADSL connection. I have an ADSL connection I don't want used unless my main leased line goes down so I want to keep the interface down until needed. I'll get a chance to test this later this week but would be interested if anyone knows the answer beforehand.
Thanks, Stephen.
The configuration is;
A site has a leased line terminating on a router intended to take all traffic to and from a site under normal circumstances. There is another router on the site with an ADSL line intended as a backup to the leased line. So for traffic leaving that site I can easily choose that it goes via the leased line. The ADSL terminates on a particular BAS which receives a per-user static route from a radius server once ppp authentication occers.
Now, a second site only has an ADSL line. It terminates on the same BAS. So when traffic from that site hits the BAS going to the site with ADSL as backup it sees a static route with an AD of 1 via what is supposed to be the backup ADSL line and it sends traffic that way. If the backup ADSL line wasn't up there is another route that will go to a PE and over the leased line. The radius server is sending the per-user static route with an AD of 210 but the BAS seems to ignore this and installs it with AD of 1 hence beating the dynamic protocol AD.
My thought was since the ADSL line is configured as a dialer we could try to emply some of the ISDN type dialer configurations to keep the line from coming up and authenticating until it is needed and therefore keeping the per user static route out of the BAS routing table until the line is needed.
I have no idea why the BAS is not accepting the AD of 210 supplied by Radius but I am not in control of that part of the circuit. I am in control of the ADSL router used for backup and as such hoped there was something I could do there to influence the problem. I could run a routing protocol but wanted to try and see if I could keep the ADSL down somehow first.
S.
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Virtual template interface vs Dialer interface?
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Please suggest too.
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Nitasshi
AFAIK we use virtual template in L2TP scenarios where you will have LAC and LNS .
the configs related to VT comes in LNS which is ur local network server for your remote clients from where the L2 tunnel gets orginated.
And about your dialer interfaces we use them very frequently in most of the situations like where you require to club 2 Physical isdn lines and to make use them as a single pipe or using single isdn line and connect it to 2 different locations using 2 B channels using 2 dialers...
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http://www.cisco.com/en/US/tech/tk801/tsd_technology_support_category_home.html
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Hi,
I have another problem - after upgrade ios wirelles connection not work.
After reload i have :
Configuration of subinterfaces and main interface
within the same bridge group is not permitted
STP: Unable to get the port parameters.
Please configure the bridge group on this interface first.
Please configure the bridge group on this interface first.
Please configure the bridge group on this interface first.
SETUP: new interface NVI0 placed in "shutdown" state
my old configuration work propertly in the old software, but after update i have notificatio.
Old thread:
https://supportforums.cisco.com/discussion/12379491/cisco-877w-no-wireless-connection
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version 12.4
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service tcp-keepalives-out
service timestamps debug datetime msec localtime
service timestamps log datetime msec localtime
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please help - thanks!Hello Marek,
I suppose you are not planning to do any kinds of advanced config using several VLANs and multiple SSIDs so let's just make your configuration simple and working.
In short, you need to remove all references to VLAN 1 and to any subinterfaces possibly related to the VLAN 1. This means in particular (follow these steps in sequence):
Remove the Dot11Radio0.1 subinterface entirely
In the Dot11Radio0 section, remove the encryption vlan 1 mode ciphers tkip command
In the dot11 ssid ciscowifi section, remove the vlan 1 command
After performing these steps, make sure that the ssid ciscowifi and encryption mode commands are still present in the Dot11Radio0 configuration, and if not, reenter them.
Best regards,
Peter -
Can you help? Two dialer interfaces with IP SLA for default route failover - issues
I have an issue with a Cisco 2821, it has an ADSL2+ HWIC whose ATM interfaces is linked to dialer 1 and a Gi0/1 interface with a pppoe client which is linked to dialer 2. Both dialer interfaces are up with their respective IP addresses. If the ADSL on dialer 1 fails i want the IP SLA to kick and and replace the default route for dialer 1 with one for dialer 2.
This config works if you manually shut down the dialer 1 interface, it injects the default route for dialer 2 and then when you unshut the interface, the default route for dialer 1 comes back. The problem i have is if you take out the cable for the ATM interface and take it down, it does not take the route out the routing table and the default route for dialer2, which works if you just shut down dialer 1 does not appear.
whats the difference between shutting down dialer1 and it fails over the default route and taking the cable out then it does not?
Here is my config, i'm sure its something simple i'm doing wrong, can anyone help???
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
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hostname Router
boot-start-marker
boot-end-marker
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enable secret 5 $1$qOOJ$HV5AH6US/YZMuCGPYp3pP.
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endSure that EEM can shut/unshut interface...you have "event track" in EEM for monitoring track events...for example:
event manager applet test
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action 1.1 command "conf t"
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action 1.3 command "shut"
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This would be an example from head :)
You would need another EEM similar to this one for unshutting interface with "event track 1 state up" for bringing interface up again.
Again as I said you would need to test this before putting in production and you would maybe need to tweak this a little bit acording to your needs...
BR,
Dragan -
I am try to configure a 2801 router to access one ISP via two services, Frame Relay and ADSL. I want email traffic to go over FR only and browsing over ADSL. If either of these services fail all traffic should be routed through the active service. The ISP setup FR as the primary route for incoming email traffic. The services are failing over but the problem is: inbound traffic fail to reach a host when the dialer interface is up. From outside I can ping the ethernet interface, the firewall and mail server When I down the dialer interface, but the minute the dialer interface comes up, I cannot ping these anymore including the serial interface. I can only ping the dialer interface. I attached the config. I hope someone can help me.Please review and let me know where the problem is and your solution. Thanks.
Hello,
in addition to Martin´s post, I am not sure if NAT is applicable at all in your situation and configuration. Since you seem to be using pubic IP addresses, and since you do not have inside and outside interfaces configured, you might as well take the lines:
ip nat inside source list 1 interface Dialer0 overload
access-list 1 permit any
out of your configuration alltogether.
As to your (policy) routing, I would make the two default routes equal:
ip route 0.0.0.0 0.0.0.0 Dialer0
ip route 0.0.0.0 0.0.0.0 205.80.76.13
that is, dot not specify an administrative distance; and change the Dialer0 to the nxt-hop address, if you know that address:
ip route 0.0.0.0 0.0.0.0 X.X.X.X
ip route 0.0.0.0 0.0.0.0 205.80.76.13
and change the route map as well:
route-map STATIC permit 20
description allow all other outbound traffic on ADSL
match ip address 130
set ip next-hop X.X.X.X
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Does that make sense ?
Regards,
GP -
I cannot send any message, on my Outlook Microsoft: Mac 2011. Thr following message appears. What shall I do?
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Dialler interface and Isdn interface
Can someone tell me the difference
When bringing up an isdn interface, Am I correct in saying it has to raise the line by calling the isdn number, If so whats the difference between this and a dialler interface ?
thanks
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A dialer interface is a parent interface that holds central protocol characteristics for ISDN D channels, which are part of specified dialer rotary groups. Data packets are delivered to dialer interfaces, which in turn initiate dialing for inbound calls. In most cases, D channels get their core protocol intelligence from dialer interfaces.
A dialer interface is user configurable and linked to individual B channels (such as S0:0, S0:1, S0:2), where it delivers data packets to their physical destinations. Dialer interfaces seize physical interfaces to cause packet delivery.
ISDN BRI delivers a total bandwidth of a 144-kbps via three separate channels. Two of the channels, called B (Bearer) channels, operate at 64 kbps and are used to carry voice, video, or data traffic. The third channel, the D (Data) channel, is a 16-kbps signaling channel used to carry instructions which tells the telephone network how to handle each of the B channels. ISDN BRI is often referred to as "2 B+D."
A D channel notifies the central office switch to send the incoming call to particular timeslots on the router. Each one of the bearer or B channels carries data or voice. The D channel carries signaling for the B channels. The D channel also identifies if the call is a digital call or analog call. Analog calls are decoded and then get sent off to the modems. Digital calls are directly relayed off to the ISDN processor in the router.
HTH,
-amit singh -
We have an AS5300 that currently supports 5 RAS dial-in users. I would like to expand the use of the AS5300 to also be a dial backup solution for some of our remote branch routers. These routers will be using a mixture of ISDN (BRI) and Analog (Async wic-1am) for their dial back up. I also need to run EIGRP over the dial backup links to support the remote LAN failover.
I've compiled a proposed configuration that I think might work for this solution. My main question is how will the AS5300 be able to know which Async interface to use when a remote user needing interactive session dials in versus a remote router.
Please take a look at my proposed config and give me some feedback on if you think this will work. Thanks!!One way I would do this is to define 5 additional Dialer interfaces for the 5 RAS dial-in users and bind them to int Group-Async 1 using dialer-pool 1.
The 5 new dialer interfaces will be configured for async mode interactive. -
I am probably supposed to know this already, but I shall swallow my pride and ask anyway:
Suppose I have an ISDN primary rate interface with 30 channels, which provides a dialer pool. I then have several dialer profile interfaces that use that pool. I then make a static route to one of those dialer interfaces, say ip route 192.168.42.0 255.255.255.0 Dialer 6. So far so good ... pretty standard stuff.
I then want to redistribute that static route into, say, OSPF. But I want to arrange it so that if there are no channels in the dialer pool, for example if the ISDN primary rate connection is down, then the route is not redistributed, or even better if it disappears from the access router altogether?
What I am saying is: how can I arrange for a dialer interface to be effectively down whenever the physical interfaces in its dialer pool are down?
N.B. I do not want ODR, because I do not want to receive routes through the dialer, for security reasons. The redistributed routes must be generated as statics in the access router (which is under my control), then redistributed into my OSPF, but depending on the state of the dialer pool.
Thanks in advance.
Kevin Dorrell
LuxembourgBump.
Does anyone have an idea how I could do this? I don't think I can do it by tracking a remote object because it is a dialup interface, and it would be too costly to dial every few seconds just to track the PRI availability.
To expand on the architecture, I have two sites: a main site and a backup site. The sites are connected together by a Gig link, so I can run VLANs between the sites. Dialin/dialout services must be assured at all times. My idea was to have a remote access router on each site, connected to the PTSN via a PRI. On the outside, the PRI provider can arrange to redirect the number if the main site is down.
Each remote access router has some static routes pointing to dialer profile interfaces. On the inside, each remote access router must redistribute these static routes into OSPF, with the main site having a lower metric than the backup site. But if the main site PRI goes down, the main site router must stop advertising its routes.
How can I achieve that, bearing in mind that the static routes point to spoof-up dialer interfaces?
Kevin Dorrell
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Remote and local interface on same ejb 3.0 bean instance
Hi,
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Zlajayes. You can implement multiple interfaces on a single class, so you can add a local and a remote interface. One trick to avoid duplicate code is to simply make the remote interface extend the local interface; then you only have to add the @Remote annotation and you're done.
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The difference between IEEE802.1Q Native VLAN sub-interface and Physical interface?
Hello
I think the following topologies are supported for Cisco Routers
And the Physical interface also can be using as Native VLAN interface right?
Topology 1.
R1 Gi0.1 ------ IEEE802.1Q Tunneling L2SW ------ Gi0 R2
R1 - configuration
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Masanobu HiyoshiHello,
The diagram is helpful.
If I am getting you correctly, you have three routers interconnected by a switch, and you want them to operate in a hub-and-spoke fashion even though the switch is capable of allowing direct communication between any of these routers.
Your first scenario is concerned with all three routers being in the same VLAN, and by using neighbor commands, you force these routers to establish targeted EIGRP adjacencies R1-R2 and R1-R3, with R1 being the hub.
Your second scenario is concerned with creating one VLAN per spoke, having subinterfaces for each spoke VLAN created on R1 as the router, and putting each spoke just in its own VLAN.
Your scenarios are not really concerned with the concept of native VLAN or the way it is configured, to be honest. Whether you use a native VLAN in either of your scenarios, or whether you configure the native VLAN on a subinterface or on the physical interface makes no difference. There is simply no difference to using or not using a native VLAN in any of your scenarios, and there is no difference to the native VLAN configuration being placed on a physical interface or a subinterface. It's as plain as that. Both your scenarios will work.
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Even if you needed your network to operate in a hub-and-spoke mode, there are more efficient means of achieving that: Cisco switches support so-called protected ports that are prevented from talking to each other. By configuring the switch ports to spokes as protected, you will prevent the spokes from seeing each other. You would not need, then, to configure static neighbors in EIGRP, or to waste VLANs for individual spokes. What you would need to do would be deactivating the split horizon on R1's interface, and using the ip next-hop-self eigrp command on R1 to tweak the next hop information to point to R1 so that the spokes do not attempt to route packets to each other directly but rather route them over R1.
I do not believe I have seen any special CCO documents regarding the use of physical interfaces or subinterfaces for native VLAN or for your scenarios.
Best regards,
Peter -
What is the diff b/w Abstract class and an interface ?
Hey
I am always confused as with this issue : diff b/w Abstract class and an interface ?
Which is more powerful in what situation.
Regards
VinayHi, Don't worry I am teach you
Abstract class and Interface
An abstract class can have instance methods that implement a default behavior. An Interface can only declare constants and instance methods, but cannot implement default behavior and all methods are implicitly abstract. An interface has all public members and no implementation. An abstract class is a class which may have the usual flavors of class members (private, protected, etc.), but has some abstract methods.
Edited by SASIKUMARA
SIT INNOVATIONS- Chennai
Message was edited by:
sasikumara
Message was edited by:
sasikumara -
Remote and Home interface binding to an EJB2.1/3.0 bean.
When deploying a complete ejb bean,
-What associated a bean class, within the container,
with it's home and remote interfaces?
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interface implementation, a naming convention,
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Z.If you have included the HTTP server with your 10.1.3.2 installation you could also setup a proxy/proxy-reverse setup in the portal http server for the /app08 mountpoint and point this to your 10.1.3.2 server....
-
Why do we need a home interface and remote interface for a ejb.
Must these interfaces be there for each ejb?Why do we need a home interface and remote interface
for a ejb.The Home interface is like a factory for getting to your beans. The remote interface is what you use to speak "directly" to the bean. It's remote because the bean is usually on a remote server somewhere (not in the same VM as your client code). The same is true for the home interface in terms of it being remote.
The corresponding LocalHome and Local interfaces are for use when the bean in question is not remote.
Must these interfaces be there for each ejb?You need either a Home and Remote or LocalHome and Local interface for all beans except Message Driven Beans. -
How to connect to third party using PI for outbound and inbound interfaces
Hello,
I have scenarios where I have data coming in from third party EDI subsystem and sent to SAP. And also from SAP to EDI subsystem. We need to send the XMLs to the EDI subsystema nd also receive XMLs.
Can someone please suggest the ways I can connect to EDI subsytem for both Outbound and Inbound interfaces.
ThanksHi Prabhu,
EDI file is different from the normal flat or xml file. Hope you understand the difference.
Now if your EDI subsytem has the capability of converting the xml file to edi file viceversa then create and receive the xml file from the EDI subsystem. For the xml file you may use the file adapter as an option.
If it doesnot have the capability then seeburger adapter needs to be used. This is not an inbuilt adapter. So your company needs to purchase it.
Regards,
---Satish
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