Failover ISDN backup link

I have situation where half of my network is connected with one central location and other half with second central location. Every router is connected with primary frame-relay link and ISDN as backup link (floating static route conf).
I need to configure that in case backup link can't manage to connect with one central location start connection with second central location. Failover ISDN backup link. Any sugestions? Thanks

Configure the two numbers under dialer interface. These will be tried in sequence, and in fact if things are configured properly it will be no problem if some branches are connected to primary hub and some to secondary.
Hope this helps, please rate post if it does!

Similar Messages

Configuration requried for 4 port ISDN S/T Interface card as backup link

Dear All,
I have ISDN BRI 4 lines Interface card installed in my company router cisco 2821, I want to configure all 4 BRI lines as an backup link of 512Kbps with same ISP which is directly connected on Serial0/2/0 with 1mbps bandwidth. If my Serial link become down. ALL 4 BRI group dail same ISP with full loaded 512kbps bandwith link.
Router IOS detail c2800nm-ipbasek9-mz.124-15.T5.bin
and I have no idea how to impelement in real senerio.
if any one using same senerio in his live enviroment please send me configration....!
waiting you reply....

Respected Sir,
Thanks for your advise. But This is very helpfull forum of cisco where cisco highly professional persons help their juniors sitting allaround the world, therefore as a junior I have posted my problem here someone give me guide line. How to configure it...?
Because no one is perfect in whole world everyone is trying to learn more and more in his field, so this is my humbly request if you looking into this matter and help me out.
I will be very thankfull to you.
regards

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

X.25 ISDN backup

Hello,
we have an ISDN backup line between a client (having unfortunatelly motorola router) and our main site. This isdn backs up a leased line of 128 Kbps and the encapsulation used is x25. In fact the whole network is x25 (it is used to carry SNA data).
The main site has a PRI controller that backs up about 9 clients, so we have defined about 9 dialer profiles.
On one of them we want to have bandwidth of 128 Kbps (so, not only one "serial" to be bound to the dialer profile but two).
Is there a way to accomplish this having in mind we only use x25 encap between the sites?
The connection works fine, this is not a problem of non connectivity. It is a matter of upgrading the isdn to 128 Kbps on a PRI controller when x25 encap is used.

Just a tip. Instead of using X25encap on the link, you might consider using a GRE tunnel. You could then switch the X25 traffic over the GRE tunnel?
http://www.cisco.com/en/US/tech/tk827/tk369/tk287/tsd_technology_support_sub-protocol_home.html
This is one of the issues that GRE was originally developed for.
Regards,
Leo

Can't find the storage and backup link to start an icloud backup

Why is it that when you create an icloud account the Storage and Backup link isn't always there. I need to create an icloud account and then create an icloud backup right away so that I can setup multiple ipads using the icloud backup. How do I force an icloud backup?
Thanks

You can check your Junk/Spam folders, sometimes the e-mail gets sent there. Also, double check that the primary e-mail address in your Apple ID account is hers. If none of this works, I suggest to wait it out, sometimes it can take up to 24 hours!

ISDN Backup without ISDN Line

Hello,
I have big problem. My client has to have ISDN back-up but there is no possibility to get ISDN line to my client location. Router has WIC 1B S/T and should call in to the another router with PRI interface when there is a problem with main line (FR).
How can I resolve this problem?? Where can I plug ISDN line?
Best regards,
Jarek

Hi Jarek,
If there is no ISDN service where the remote site is then you will have to forget about using ISDN backup from that particular site.
Your best way to get dial backup would be to use something like a WIC-1AM or WIC-2AM (analog modem WICs) at the remote site, connected to normal POTS phone lines. You would then need to install some digital modems into the router with the PRI (NM-6DM etc). In this way the analog modems can dial into the PRI, whereby the PRI router will direct the call internally to the digital modems.
This won't give as good a performance as a BRI ISDN circuit, but it will at least allow you to implement a dial backup solution.
Hope that helps.
Vaughan

Failover of a link

I have a 7204 core router with two uplinks. Initially, the one uplink was a singular uplink via PPPoE so we built our outbound NAT translations on it as well as our VPN sessions.
As of today, we have two links. The second link has much less bandwidth and is only setup as a backup link. What we have setup is as follows:
ip sla monitor 100
type echo protocol ipIcmpEcho <**HOST ON END OF PPPoE LINK**> source-interface Dialer1
timeout 1000
threshold 100
frequency 30
ip sla monitor schedule 100 life forever start-time now
track 100 rtr 100 reachability
interface FastEthernet1/0.110
description Link to BackupLink
encapsulation dot1Q 110
ip address <**STATIC_IP_ISSUED_BY_UPSTREAM**> 255.255.255.0
ip nat outside
ip virtual-reassembly
interface Dialer1
bandwidth 30000
ip address negotiated
ip access-group WAN-InboundACL in
no ip redirects
ip mtu 1492
ip flow ingress
ip flow egress
ip nat outside
ip virtual-reassembly
encapsulation ppp
load-interval 30
dialer pool 1
dialer-group 1
no cdp enable
ppp authentication pap callin
ppp pap sent-username <**PPPoE_USERNAME**> password 7 <**PPPoE_PASSWORD**>
crypto map RemoteAccessVPN
max-reserved-bandwidth 90
service-policy output QoS_Outbound
ip route 0.0.0.0 0.0.0.0 Dialer1 track 100
ip route 0.0.0.0 0.0.0.0 FastEthernet1/0.110 100
ip nat inside source route-map OutboundNatBackup interface FastEthernet1/0.110 overload
ip nat inside source route-map OutboundNat interface Dialer1 overload
ip access-list extended VPN_Selector
remark ACL for VPN
permit ip 192.168.80.0 0.0.3.255 192.168.5.0 0.0.0.255
ip access-list extended OutBoundACL
permit ip 192.168.80.0 0.0.15.255 any
route-map OutboundNatBackup deny 20
match ip address VPN_Selector
route-map OutboundNatBackup permit 990
match ip address OutBoundACL
match interface FastEthernet1/0.110
route-map OutboundNat deny 20
match ip address VPN_Selector
route-map OutboundNat permit 990
match ip address OutBoundACL
As you can see we have the primary link monitored and it will flip the default route if the primary link's monitoring goes down to the far end (I know i can do this with an "event manager applet" however I am looking to just get the simple things working). I am wondering if, since I have the second link, do I need to match on the dialer interface on the old route-map OutboundNAT for each entry? Also, any ideas as to what to do to make the VPNs come up across the new link. I am guessing I setup a second crypto peer on the far end but how do I set this end to only have the VPN up on the primary path unless the primary path is down?

I have a 7204 core router with two uplinks. Initially, the one uplink was a singular uplink via PPPoE so we built our outbound NAT translations on it as well as our VPN sessions.
As of today, we have two links. The second link has much less bandwidth and is only setup as a backup link. What we have setup is as follows:
ip sla monitor 100
type echo protocol ipIcmpEcho <**HOST ON END OF PPPoE LINK**> source-interface Dialer1
timeout 1000
threshold 100
frequency 30
ip sla monitor schedule 100 life forever start-time now
track 100 rtr 100 reachability
interface FastEthernet1/0.110
description Link to BackupLink
encapsulation dot1Q 110
ip address <**STATIC_IP_ISSUED_BY_UPSTREAM**> 255.255.255.0
ip nat outside
ip virtual-reassembly
interface Dialer1
bandwidth 30000
ip address negotiated
ip access-group WAN-InboundACL in
no ip redirects
ip mtu 1492
ip flow ingress
ip flow egress
ip nat outside
ip virtual-reassembly
encapsulation ppp
load-interval 30
dialer pool 1
dialer-group 1
no cdp enable
ppp authentication pap callin
ppp pap sent-username <**PPPoE_USERNAME**> password 7 <**PPPoE_PASSWORD**>
crypto map RemoteAccessVPN
max-reserved-bandwidth 90
service-policy output QoS_Outbound
ip route 0.0.0.0 0.0.0.0 Dialer1 track 100
ip route 0.0.0.0 0.0.0.0 FastEthernet1/0.110 100
ip nat inside source route-map OutboundNatBackup interface FastEthernet1/0.110 overload
ip nat inside source route-map OutboundNat interface Dialer1 overload
ip access-list extended VPN_Selector
remark ACL for VPN
permit ip 192.168.80.0 0.0.3.255 192.168.5.0 0.0.0.255
ip access-list extended OutBoundACL
permit ip 192.168.80.0 0.0.15.255 any
route-map OutboundNatBackup deny 20
match ip address VPN_Selector
route-map OutboundNatBackup permit 990
match ip address OutBoundACL
match interface FastEthernet1/0.110
route-map OutboundNat deny 20
match ip address VPN_Selector
route-map OutboundNat permit 990
match ip address OutBoundACL
As you can see we have the primary link monitored and it will flip the default route if the primary link's monitoring goes down to the far end (I know i can do this with an "event manager applet" however I am looking to just get the simple things working). I am wondering if, since I have the second link, do I need to match on the dialer interface on the old route-map OutboundNAT for each entry? Also, any ideas as to what to do to make the VPNs come up across the new link. I am guessing I setup a second crypto peer on the far end but how do I set this end to only have the VPN up on the primary path unless the primary path is down?

Root bridge and Non rootbridge as backup link (point to Point)

I want to use 2 APs as backup link. I want to be sure that this wireless link is working fine as a backup.
In order to avoid loops, Should I set any specific configuration in both APs?

Follow the URl for the configuration of the Backup Controllers which may help you :
http://www.cisco.com/en/US/docs/wireless/controller/5.1/configuration/guide/c51lwap.html#wp1249029

Backup link

My customer needs to have backup lines for their branch offices. They have installed on each branch office a router (RV042 or TL ER6120 or ASA5505), on each branch office are installed 2 fiber optic transceiver from diferent ISPs. At headquarter they have installed a cisco 892FSP. 892 WAN1 interface is connected to a layer 3 switch (on that switch are connected many Patch cords connected to many ONTs), WAN2 is connected to a catalyst 2960 switch with a SFP connected. Customer needs to have backup link between headquarter and branch offices. Can anyone help?

Need help!!!

Configure backup link

My customer needs to have backup lines for their branch offices. They have installed on each branch office a router (RV042 or TL ER6120 or ASA5505), on each branch office are installed 2 fiber optic transceiver from diferent ISPs. At headquarter they have installed a cisco 892FSP. 892 WAN1 interface is connected to a layer 3 switch (on that switch are connected many Patch cords connected to many ONTs), WAN2 is connected to a catalyst 2960 switch with a SFP connected. Customer needs to have backup link between headquarter and branch offices. Can anyone help on cisco 892 configuration please?

Hi
Your connectivity/setup is not clear however if your query is to configure backup data link you can follow the below link for details:
http://www.cisco.com/en/US/docs/routers/access/800/860-880-890/software/configuration/guide/backup_ps9572_TSD_Products_Configuration_Guide_Chapter.html#wp1015543
If you still have query please share your topology.
Thanks & Regards
Sandeep

No carrier from PVDM2-36DM via ISDN PRI link

The network topology is
Modem --> [FXS][cisco 2821][E1] --> ISDN PRI --> [E1][cisco 2811][PVDM2-36DM]
ISDN PRI link is operated correctly, debug isdn q931 shows that connection is established. Info message is
*Jul 23 06:27:45.407: %ISDN-6-CONNECT: Interface Serial1/0:1 is now connected to 555 N/A
Unfortunately, no carrier signal is going from modem to line.
Configuration of Cisco Routers is below.
1st (2821)
==========
controller E1 0/2/0
framing NO-CRC4
pri-group timeslots 1-2,16
interface Serial0/2/0:15
no ip address
encapsulation hdlc
isdn switch-type primary-qsig
isdn incoming-voice modem
no cdp enable
dial-peer voice 1 pots
destination-pattern 555
port 0/3/0
voice-port 0/3/0
cptone RU
dial-peer voice 888 pots
destination-pattern .T
port 0/2/0:15
2nd (2811)
==========
controller E1 1/0
framing NO-CRC4
pri-group timeslots 1-2,16
interface Serial1/0:15
no ip address
encapsulation hdlc
isdn switch-type primary-qsig
isdn timer T310 120000
isdn not-end-to-end 64
isdn protocol-emulate network
isdn incoming-voice modem
no cdp enable
line 0/322 0/357
modem InOut

> The PVDM2-DM works only with NM-xT1/E1.
Yes, of course, it is well known fact. We are using NM-1CE1T1-PRI. See "show diag" output below.
Slot 0:
C2811 Motherboard with 2FE and integrated VPN Port adapter, 2 ports
Port adapter is analyzed
Port adapter insertion time unknown
EEPROM contents at hardware discovery:
PCB Serial Number : FOC11070F5L
Hardware Revision : 1.0
Top Assy. Part Number : 800-26920-03
Board Revision : A0
Deviation Number : 0
Fab Version : 03
RMA Test History : 00
RMA Number : 0-0-0-0
RMA History : 00
Processor type : 87
Hardware date code : 20070214
Chassis Serial Number : FHK1109U00A
Chassis MAC Address : 001b.2aa3.c1c8
MAC Address block size : 24
CLEI Code : COM7C00ARA
Product (FRU) Number : CISCO2811
Part Number : 73-10258-04
Version Identifier : V04
EEPROM format version 4
EEPROM contents (hex):
0x00: 04 FF C1 8B 46 4F 43 31 31 30 37 30 46 35 4C 40
0x10: 03 E7 41 01 00 C0 46 03 20 00 69 28 03 42 41 30
0x20: 88 00 00 00 00 02 03 03 00 81 00 00 00 00 04 00
0x30: 09 87 83 01 32 3F 46 C2 8B 46 48 4B 31 31 30 39
0x40: 55 30 30 41 C3 06 00 1B 2A A3 C1 C8 43 00 18 C6
0x50: 8A 43 4F 4D 37 43 30 30 41 52 41 CB 8F 43 49 53
0x60: 43 4F 32 38 31 31 20 20 20 20 20 20 82 49 28 12
0x70: 04 89 56 30 34 20 D9 02 40 C1 FF FF FF FF FF FF
PVDM Slot 0:
36 port PVDMII digital modem PVDM daughter card
Hardware Revision : 1.0
Part Number : 73-10102-03
Board Revision : C0
Deviation Number : 0
Fab Version : 03
PCB Serial Number : FOC10354YRW
RMA Test History : 00
RMA Number : 0-0-0-0
RMA History : 00
Processor type : 00
Product (FRU) Number : PVDM2-36DM
Version Identifier : V01
EEPROM format version 4
EEPROM contents (hex):
0x00: 04 FF 40 04 90 41 01 00 82 49 27 76 03 42 43 30
0x10: 88 00 00 00 00 02 03 C1 8B 46 4F 43 31 30 33 35
0x20: 34 59 52 57 03 00 81 00 00 00 00 04 00 09 00 CB
0x30: 8A 50 56 44 4D 32 2D 33 36 44 4D 89 56 30 31 20
0x40: D9 02 40 C1 FF FF FF FF FF FF FF FF FF FF FF FF
0x50: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x60: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x70: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
Slot 1:
NM-1CE1T1_PRI Port adapter, 1 port
Port adapter is analyzed
Port adapter insertion time unknown
EEPROM contents at hardware discovery:
Hardware Revision : 1.0
Top Assy. Part Number : 800-21550-02
Board Revision : A0
Deviation Number : 0-0
Fab Version : 03
PCB Serial Number : FOC104753CA
RMA Test History : 00
RMA Number : 0-0-0-0
RMA History : 00
Fab Part Number : 28-5935-03
Manufacturing Test Data : 00 00 00 00 00 00 00 00
Field Diagnostics Data : 00 00 00 00 00 00 00 00
Product (FRU) Number : NM-1CE1T1-PRI
Version Identifier : V01
EEPROM format version 4
EEPROM contents (hex):
0x00: 04 FF 40 03 9D 41 01 00 C0 46 03 20 00 54 2E 02
0x10: 42 41 30 80 00 00 00 00 02 03 C1 8B 46 4F 43 31
0x20: 30 34 37 35 33 43 41 03 00 81 00 00 00 00 04 00
0x30: 85 1C 17 2F 03 C4 08 00 00 00 00 00 00 00 00 C5
0x40: 08 00 00 00 00 00 00 00 00 CB 8D 4E 4D 2D 31 43
0x50: 45 31 54 31 2D 50 52 49 89 56 30 31 20 FF FF FF
0x60: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF
0x70: FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF FF

CISCO ISDN TP Link is not connecting on COM port

Hello All,
I am having CISCO ISDN TelePresence Link. I am connecting it through COM port I changed the serial port settings as per recommended settings shown in User Manual in my laptop but still console is not coming. Please help...
CISCO ISDN Telepresence Link 1.1
Regards,
Kiran Chavan.

Make sure you're using a standard serial cable, and not a cross-over/null-modem cable.
Double check that your terminal settings are correct for 115200, 8, 1, none (as per example PuTTY screenshot below).
Wayne
Please remember to rate responses and to mark your question as answered if appropriate.

STep by Step ISDN E1 Link Configuration

Dears
i need a STep by Step ISDN E1 Link Configuration
i have no knoledge about it and i really wanna learn it before the CCIE Lab
Regarsd

You can find it here
https://supportforums.cisco.com/document/125801/basic-isdn-pri-e1-configuration

ISDN backup

I have been using ISDN link as a backup using floating static routinng and it is working fine.Now How we want that ISDN dials only in office hour if Primary links fail.Hhat I have to do for it? Please suggest me.

You need to use time-based access list to define interesting traffic.
Can get more info:
http://www.cisco.com/en/US/tech/tk801/tk133/technologies_configuration_example09186a0080094089.shtml
Thanks,
Mak

Problem on ISDN Backup line

Hello,
i have a remote site that have two WAN lines, one primary and the another is Backup ISDN (PPP), MY points is about the ISDN line i have made a configuration as the following:
interface BRI0/0/0
no ip address
encapsulation ppp
dialer pool-member 1
isdn switch-type basic-net3
ppp authentication chap
interface Serial0/1/0
bandwidth 256
ip address 10.1.2.2 255.255.255.252
ip route-cache flow
service-policy output QoS-Policy
ip rtp header-compression
ip rtp priority 32000 1000 80
interface Virtual-Template1
no ip address
ppp multilink
ppp multilink interleave
ppp multilink fragment delay 20
ip rtp reserve 32000 1000 64
interface Vlan1
no ip address
no snmp trap link-status
interface Dialer1
ip address 192.168.99.14 255.255.255.252
encapsulation ppp
dialer pool 1
dialer remote-name cr-02
dialer idle-timeout 500
dialer string XXXX400
dialer load-threshold 128 either
dialer-group 1
no snmp trap link-status
no cdp enable
ppp authentication chap
router eigrp 1
network 10.0.0.0
network 192.168.99.0
no auto-summary
eigrp stub connected
ip route 0.0.0.0 0.0.0.0 10.100.1.1
ip route 0.0.0.0 0.0.0.0 192.168.99.13 20
But when the primary link is down the ISDN link doent come up, i tried to make a debugging it give me the following messege :
*Aug 4 06:42:27.275: ISDN BR0/0/0 **ERROR**: handle_l2d_srq_mail: Layer 1 inactive.
*Aug 4 06:42:29.507: ISDN BR0/0/0 Q921: L2_EstablishDataLink: sending SABME
*Aug 4 06:42:29.527: %ISDN-6-LAYER2UP: Layer 2 for Interface BR0/0/0, TEI 95 changed to up
*Aug 4 06:42:29.639: ISDN BR0/0/0 **ERROR**: host_disconnect_ack: Call rejected cause No circuit/channel available(0x22) call id 0x818D.
*Aug 4 06:42:31.271: ISDN BR0/0/0 Q931: Applying typeplan for sw-type 0x1 is 0x0 0x0, Called num XXXX400
*Aug 4 06:42:31.375: ISDN BR0/0/0 **ERROR**: host_disconnect_ack: Call rejected cause No circuit/channel available(0x22) call id 0x818E.
*Aug 4 06:42:33.271: ISDN BR0/0/0 Q931: Applying typeplan for sw-type 0x1 is 0x0 0x0, Called num XXXX400
*Aug 4 06:42:33.375: ISDN BR0/0/0 **ERROR**: host_disconnect_ack: Call rejected cause No circuit/channel available(0x22) call id 0x818F.
*Aug 4 06:42:35.271: ISDN BR0/0/0 Q931: Applying typeplan for sw-type 0x1 is 0x0 0x0, Called num XXXX400
*Aug 4 06:42:35.375: ISDN BR0/0/0 **ERROR**: host_disconnect_ack: Call rejected cause No circuit/channel available(0x22) call id 0x8190.
Success rate is 0 percent (0/5)
ar-BRH#
*Aug 4 06:42:50.375: %ISDN-6-LAYER2DOWN: Layer 2 for Interface BR0/0/0, TEI 95 changed to down
*Aug 4 06:42:50.383: ISDN BR0/0/0 Q931: Ux_DLRelInd: DL_REL_IND received from L2
ar-BRH#
*Aug 4 06:43:00.967: ISDN BR0/0/0 Q931: L3_ShutDown: Shutting down ISDN Layer 3
*Aug 4 06:43:00.971: ISDN BR0/0/0 Q931: Ux_DLRelInd: DL_REL_IND received from L2
Kindlly your help
THanks

Dharmesh
I do not believe that the original poster intended to use backup interface, and I do not believe that backup interface is necessarily needed here. The floating static default route points to the dialer interface:
ip route 0.0.0.0 0.0.0.0 10.100.1.1
ip route 0.0.0.0 0.0.0.0 192.168.99.13 20
and if the primary static default route is withdrawn the router will begin sending traffic to the dialer.
I do note that in the amount of configuration shown I do not see a way to get to 10.100.1.1 and so there may be a problem with the primary static default route. Or it may be that the address is reachable through some interface not shown in the posted config.
I believe that there is a more fundamental problem shown in the original post. One of the lines indicates that layer 1 is not active. If layer 1 is not active then nothing can be sent over this interface. Perhaps we could have posted the output of show isdn status. This would clarify the status of layer 1 and layer 2 for the ISDN.
HTH
Rick

Failover ISDN backup link

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