E1 (ISDN) Failover between 2 E1 ports in same router

I have two Asterisk based VoIP servers and each has an E1 card installed.
One is a primary and the other a secondary (standby).
I am in the UK and have 1 ISDN E1 line from BT giving us our incoming/outgoing calls. At the moment this is hard wired to our primary however if there is a failure with the primary it's a manual shift to the secondary. I would like to automate this.
I have been looking at dedicated E1 failover units but these are either very hard to come by or horrendously expensive
I've therefore just had a thought but would like some clarification from the Cisco forum as to whether this would work or not.
I have a Cisco 2901 with 2 WIC cards giving 4 E1 ports. Is it possible to configure this to act as an E1 failover?
I'm not wanting to convert anything to IP, I want it all done with E1, so for example:
BT Line in goes to WIC port 1
WIC port 2 has primary
WIC port 3 has secondary
Primary and Secondary can both make outgoing via BT line however only port 2 is receiving incoming from BT, however if there is a loss of service on the primary all incoming from BT then routes automatically to WIC port 3
It all sounds plausible to me but as I said I don't want to do any conversion to IP as there is sensitive modem traffic and would like to minimise this as much as possible.
Any advice would be greatly appreciated
Thanks

Hello,
What you describe is pretty simple to configure from a Cisco point of view.
To do this you would configure two dial peers each of which point to the same destination number bt with different preferences and destination ports. A basic sample configuration is shown below:
dial-peer voice 2 pots
destination pattern 1...
preference 1
voice-port 2
dial-peer voice 3 pots
destination pattern 1...
preference 2
voice-port 3
In the sample config each dial peer points to the destination pattern 1...
The dots are wild cards so the number range would be 1000 to 1999.
Dial peer 2 has the better preference and so will be used if available and will send calls out of port 2.
Dial peer 3 has the worse preference and so will only be used if dial peer 2 is fully utilized and another call arrives (this is not possible in your setup) or if the port used by dial peer 2 is down.
In a real config the port numbers would likely be different and some extra commands would be needed but hopefully this would give you the basics of how this would work.
In this setup the Cisco router itself becomes a single point of failure so I am not sure that it improves things much over just having a single Asterisk server.
I am wondering whether it would be possible to wire both Asterisk servers to the BT PRI circuit and have the interface on the second server shut down.
The second server could then somehow monitor the first server and if it went down it could bring it's own ISDN card up. You could do this with Cisco routers using Embedded Event Manager and I am sure you could do something similar with Linux scripting.
Hope this helps and let us know how you finally solve this issue.
James

Similar Messages

Unable to establish serial connection between 2 serial ports of same laptop

I am trying to run "Basic 2 port serial write and read.vi" from the labview example using the 2 different com ports of same laptop. My serial cable is fine. It has passed loopback test. Also I have successfully communicated with the microcontroller(via max232) using the same cable. Still In the given example, I am not recieving character that I have written in the "string to write" window. I have confirmed the com port numbers. The cable I am using is simple 3 wire tx-rx and ground cable. I have also tried to connect two ports on two different pc's that also doesnt work. What may be the problem? I can't see any.

Are you changing the data being sent? As currently configured, you need to make sure the \n stays at the end of the data. To avoid this, turn the termination character off (input on the top of the Configure Serial Port, wire a FALSE constant to it).
There are only two ways to tell somebody thanks: Kudos and Marked Solutions
Unofficial Forum Rules and Guidelines

How can I encrypt my data links between switch uplink ports ? I'm unable to use "cts Manual" command in C3560X switch.suggest me

How can I encrypt my data uplinks between switch trunk ports ? I'm unable to use "cts Manual" command in C3560X switch.suggest me as I want to encrypt my switch-to-switch link with Cisco TrustSec.

Hi
Login to switch & go to interface..
There you can give tags.. (ISL & DONT1Q)
Command switch-port mode trunk
Switch-port trunk encapsulation ssl or dot1Q

Failover between ASA5515-X and ASA5510

Hi,
I would like to know if it's possible and how can we setup a failover between ASA 5515-X and a ASA 5510.
I'm aware that the ASA 5510 requires Security Plus for HA Active/Active.
Any answer are welcome,
Thanks !

Hi Jouni,
Thanks for your prompt answer !
Too bad to hear that we can't achieve that :/
I guess that in the concept, HA must be same hardware (make sense of course, as we need to be "higly" available if one hardware fall down),
but for the concept to "fail" over something, it would have been great to have features within multi device (like you can temporary "fail" over a 10 Mbps line when your 100 Mbps is down...)
But well, too much concept, it's how it is ! ;= Thanks again for your accurate answer !
Nice day'

Request failover between Load Balancer and OAS 10.1.3.3

Hello,
I have a Load Balancer hardware "Cisco 11500 content service"
Working on 4 applications server OAS 10.1.3.3 on the oracle enterprise lunix
We are using Oracle HTTP Server And deployed application Under (j2ee) I am using Cluster between them "instant” as the same on all 4 servers
If an OC4J process goes down between requests, then this module is able to hide that failure from the end user by transparently routing the next request to another OC4J that is available within the same group of JVM.
BUT when I shutdown the opmn the Load Balancer Hardware is still sending that requests to the opmn that is already down
How can I configure or fix that request that is common to that opmn stopped process
Do you have the solution to solve this issue?
Thanks.
Regards.
Moataz

Dear All,
Will appreciate if someone can answer this. Please let me know.........
Regards
Moataz Alem

ISDN backup for ADSL connected sites using separate router

In our set-up we have a central site with a large number of remote sites connected.
We have moved a number of remote sites from ISDN connections to ADSL connections. However, we would like to keep the ISDN and use it for backup.
The problem I have is - how do I implement ISDN backup with our current set-up? From the documentation, I can see how to do this for more "straightforward" set-ups but not for the set-up we have! Let me explain:
At the central site, we have a Cisco 7206 router. The ISDN connected sites connect directly to this router (which is configured with a large number of dialer map statements for each site)
The 7206 connects to a PIX515E firewall. The ADSL connected sites connect over the public internet using IPSEC with the tunnels terminating on the PIX.
The 7206 router contains static routes for the ADSL connected sites, pointing to the firewall.
At the remote sites, we have a Cisco 837 router for the ADSL connection.
This is connected (via ethernet) to the router we want to use for ISDN backup - a Cisco 800. The 837 and 800 are configured with HSRP.
However, at the moment, if the 837 or the ADSL link was to go down, there would be no means to connect to the central site. How can we configure this to use the 2nd router for ISDN backup, given our set-up?
Any suggestions would be greatly appreciated!
(incidentally, I have only recently joined this company and have taken this over, without any information to go on as to why things are set up as they are !)

Hello again,
I think you can pretty much ignore my last message. I've done a bit more digging and I think I have a better idea of what you mean now!
Lets see if I've got this about right. To recap:
I need to set up a GRE tunnel between the remote site and 7206 router at head office, which in turn would be using IPSEC tunnel between remote router and PIX.
So, steps required:
1) set up IPSec tunnel to to PIX (this is the way it is already currenly configured - am I right in thinking no further configuration would be required as far as the PIX is concerned, for the new set-up?)
2) set up GRE tunnel between remote ADSL router and 7206 - requires tunnel interface on both router with start point and end point configured. Use GRE keepalive to enable the line protocol to be brought down if the far end cannot be reached.
3) Add static routes on ADSL router to reach head office network via tunnel interface
4) Add static route on 7206 router to reach remote network via tunnel interface
5) Configure ISDN map statement on 7206 mapping remote network to ISDN number
6) Configure "floating" static routes on 7206 to use ISDN to reach remote network
7) Configure HSRP on ADSL and ISDN routers with tracking of tunnel interface. If tunnel interface goes down, then ISDN router takes over as active.
8) Configure static routes on ISDN router to point to head office network using BRI0 interface.
So, under normal operation, traffic between head office and remote office will be routed across the GRE tunnel using the ADSL link.
If the ADSL link was to go down then the GRE tunnel would also go down. So, the 7206 would then use the floating static routes to reach the remote network via the ISDN connection.
The ISDN router would take over as active at the remote site since the tunnel interface would have gone down, forcing the HSRP to failover.
Does that all sound about right? Is there anything I've missed?
I'll start trying to put some configurations together when I get the chance - but, if its ok, I'll probably run these past you too, just to make sure they seem correct!
Thanks,
Neil

Home Sharing not working between wireless PC's / devices and ethernet wired PC's on the same router.

Home Sharing is not working between wireless PC's / devices and ethernet wired PC's on the same router. I installed a new Verizon FIOS ActionTec MI424WR GigE wireless / ethernet router, replacing the original FIOS router. With the old router Home Sharing worked fine across and among all iOS and Windows wired and wireless devices. With the new router Home Sharing works between and among the Wired PC's but not between the wired PC's and the Wireless connected PC's or iOS devices. Home Sharing also works between and among the wireless connected PC's and iOS decices but not between them and the wired PC's.
Only the router was changed. No changes were made to any of the devices except all were updated with the latest version of iTunes 10.7.0.21 and the iSO devices were updated to iOS vrsion 6.01. Three PC's are wired and all are running Windows 7. There also is a Windows Home Server connected to the router by ethernet port. It does not run iTunes but does provide WebDAV services to my iOS devices. This works fine. Two PC's are wireless, one running Windows 7 and one running Windows 8. All of the PC's are connected to the same (new) router via it's ethernet ports and it's wireless access point. Two of the wired PC's are connected via a high-speed ethernet hup that is connected to the router (Home Sharing works fine between the two PC's on the hub and the PC on the router). All wired and wireless devices on the router are visible and members of the router's Home/Office virtual network.
All of the PC's are visible in the Windows network and all shared files are accessable from all PC's, both wired and wireless.
Obviously the router seems to be the issue, something between the ethernet and the wireless access point components. I checked the settings and found nothing that would prevent Home Sharing between the wired and wireless devices. There is no setting that isolates the wireless network. I have done the following:
Read the router user manual and checked all the settings
Rebooted the router and tested.
Turned off the router's firewall and tested.
Home Sharing is turned on all the devices and all use the same Apple ID.
Restarted iTunes and tested.
Verified iTunes is "Allowed" in each PC's firewall.
Again, I can Home Share between the two wireless PC's but not between either of the wireless PC's and any of the wired PC's. I can Home Share between my iPads and iPhones and either of the two wireless PC's but not with any of the wired PC's. I can Home Share between any of the wired PC's but not between any wired PC and a wireless PC or iOS device.
I hope someone may have had a similar problem and has a fix suggestion. I'm stumped! I have a;so contacked ActionTec and awaiting an answer.

Solution from ActionTec is:
Log into your router.
Click the Advanced icon
Cclick Yes
Click on the IGMP Proxy
Select Disable
Click Apply

What is the proper config for the Airport Extreme when a Voice over IP device is between the cable modem and the router.

What is the proper config for the Airport Extreme when a Voice over IP device is between the cable modem and the router. Its a VoIPo device. The cable modem is connected to the VoIP WAN port and the LAN port on the device feeds the Airport Extreme. The VOIP is working fine, and my Mac are getting 10. addresses from the Airport Extreme. But I do get confict messages and lose my connection periodicaly. Looking for help.

Its a VoIPo device.
Per chance, is this device the Grandstream HT502?

Noob question about swicthing port on a router

I am trying to understanding vlan on switch and router with packet tracer 6.
I thought switching port on a router will act as it does on a switch (mine are 2960).
I use a router with 1 WAN port and 4 switching port to emulate my cisco 881 (without wireless). Everything was working good with my 5 switches and 4-5 VLAN..then doing a ping test between VLAN.. I discovered that PC belonging to differents vlan can ping each other on a router - switching port...then i remake a basic scenario and post it here. i probably missed a basis of vlan.
FA 0/0 (the WAN port) is not connected.
FA 0/0/0 are port switching on the rooter.
According to my image...why pc0 is able to ping pc1 as there is not a specific route between them on the rooter...May be it is the C on the left side meanig connected..thought we need a static route to make one network communicate with another if they are not on the same network.

The actual ports you connect the PCs to are L2 ports only ie they are not L3 so they cannot route. But you have also configured L3 SVIs (Switched Virtual Interfaces) on your router and it those that are doing the routing.
An SVI is a virtual L3 interface. So from your configuration where you do a "sh ip int" you can see at the bottom
vlan 10 192.168.0.1/24
vlan 99 192.168.99.1/24
those are your SVIs. If you also look at your routing table it shows entries for both your subnets as directly connected routes with those SVIs as well.
If you do a "sh run" you should see in your configuration something like this -
int vlan 10
ip address 192.168.0.1 255.255.255.0
int vlan 99
ip address 192.168.99.1 255.255.255.0
SVIs are generally seen on L3 switches and as as i say there are not configured on the actual port. The idea is a switch could have say 24 ports in vlan 10 and 24 ports in vlan 11 and then you simply configure SVIs for both vlans and now clients in each vlan can communicate with each other.
So to be precise SVIs are virtual L3 interfaces for a L2 vlan. They act much like physical L3 ports eg fa0/0 from your example ie. you can apply acls etc. to them but they do have differences.
Hope that makes sense.
Edit - to confirm all of the above you can simply remove or shut down one of the SVIs and the PCs should no longer be able to communicate.
Jon

CTI Port vs CTI Route Poin

Could someone plese describe the difference between a CTI Port and a CTI Route Point?
Thank you

The documentation for CTI RP has an explanation
A computer telephony integration (CTI) route point designates a virtual device that can receive multiple, simultaneous calls for application-controlled redirection.
For first-party call control, you can optionally add a CTI port for each active voice line (the CTI application determines this). Applications that use CTI route points and CTI ports include Cisco IP Softphone, Cisco Unified Communications Manager Auto-Attendant, and Cisco IP Interactive Voice Response System. After you add a CTI route point to Cisco Unified Communications Manager Administration, information from the RIS Data Collector service displays in the CTI Route Point Configuration window. When available, the IP address of the device and the name of the Cisco Unified Communications Manager with which the device registered display.
CTI Route Point Configuration
http://www.cisco.com/en/US/docs/voice_ip_comm/cucm/admin/7_1_2/ccmcfg/b06ctirp.html
HTH
java
if this helps, please rate

I've been having a problem forwarding ports in my router...

I've been having a problem forwarding ports in my router WRT160N I enable the ports I want to use for my applications, just after clicking save settings I go back to my port's forwarding section and I don't see any application I add being saved. Please help, thanks.
Message Edited by AudioSoft on 04-09-2008 05:31 PM

Might be possible that it will take time to save the settings ... so once you click save settings wait for few seconds ...
Also if it not working ... disable all firewall on the computer & then try to configure the router ...

How do I share one itunes account between two users on the same computer

How do I share one itunes account between two users on the same computer without taking up twice as much space on my hard drive?

You would need to move the itunes folder to a location that both users have permissions to access such as the Shared folder or any folder on the root level of the macintosh HD.
You can find instructions here http://support.apple.com/kb/HT1203 This method allows you to share the content without sharing the same library.

What is the best way to share a iTunes library between 5 users on the same computer?

What is the best way to share a iTunes library between 5 users on the same computer?
Currently I have a common itunes library in a shared folder that each user is linked to. The problem is that when one user adds music to the shared file, it does not automaticaly appear to other users when they open their iTunes. They have to go to the shared library and select the new music in order to make it visable in their iTunes.
Would iTunes file shareing fix this problem?
Thanks

aapl.up wrote:
Rick, are you saying that if you try to share a folder outside of home and use sharepoints, then the other mac wont prompt you to log in? Have you tried that? It is hard to believe that is the case
I am sort of saying that. Have you tried it? I know it's hard to believe, but you really need to help us out by trying some steps that you don't believe.
We can't see what your exact situation is. We sort of know what's worked for us out here. Just trying to help you get this going in less than 24 hours!
Sharepoints manages the samba configuration file. It's free software that puts a pretty face on an otherwise cumbersome config file.
Give it a shot.
windows will not prompt for passwords, I have tried this with multiple computer at home for both vista and xp
As I stated. You will not get prompted on windows, if you have set up sharing in an insecure fashion. You are not using a secured sharing situation.
No argument with your statement.

Hello there - how can I share my iTunes library between two users on the same computer? I put the library in a shared folder between both and have selected this library on both as well, but when I update iTunes with music etc it only appears on one?

Hello there - how can I share my iTunes library between two users on the same computer? I put the library in a shared folder between both and have selected this library on both as well, but when I update iTunes with music etc it only appears on one?

Thank you Joe - I tried this but it's only showing a teensy amount of music - the stuff on the second users account as opposed to the giagntic library on the 'main' account. I actually went to a Genius Bar and they said that apple doesn't really want you to share music between accounts - parents don't want to hear their kids music etc. Which seemed strange, but it might be the case sadly Thanks anyway!

How can I share a folder between two users on the same mac?

Hi all,
I would like to share a folder between multiple users on the same macbook without having to transfer the folder to the Public/Shared folder.
Is there not a way, using the the folders shared permissions, to allow shared folders from one user to be visible and usable by another user on the same mac without having to move the folder to a designated shared location?
Regards,
Caleb

jrwood116 wrote:
Thanks, but do you have to do that every time you share a folder?
No, you just need to do it once and that's it. Anything that is in the Shared folder is accessible by all user accounts within the same Mac.
jrwood116 wrote:
I've read numerous 'how to share a folder' blogs and they just say it's as simple as clicking 'share' and allowing specific users to access it...none have mentioned this (not saying your advice is wrong at all, just don't get why no-one else has mentioned what appears to be a key step!)
Can you give me an example of such a blog. I suspect you may have mis-understood what they were saying but if you can provide a link, I'll look at it.

E1 (ISDN) Failover between 2 E1 ports in same router

Similar Messages

Maybe you are looking for