07-22-2010 06:54 AM - edited 03-04-2019 09:09 AM
Hi all,
I am trying to configure ISDN backup for a client. The scenario is as follows:
Remote branch is connected through Metro ethernet with edge router A. Routing protocol is OSPF and everything is tunneled through a GRE tunnel.
I need to configure ISDN backup in which the same remote router will call to edge router B. Not only that i will need a full OSPF table (due to some multicast applications that are running) and a time-based ACL.
I have tried to simulate this on the lab using 2x 1841 routers. The configuration is as follows:
Router1: Remote router (caller)
------------------------------------------------
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname TWO
!
boot-start-marker
boot system flash flash:c1841-advipservicesk9-mz.124-24.T1.bin
boot-end-marker
!
logging message-counter syslog
enable password cisco
!
no aaa new-model
clock timezone EET 2
clock summer-time EEST recurring last Sun Mar 3:00 last Sun Oct 3:00
dot11 syslog
ip source-route
!
!
ip dhcp excluded-address 10.6.6.1
!
!
!
ip cef
no ipv6 cef
ntp server 192.168.255.2
!
multilink bundle-name authenticated
!
isdn switch-type basic-net3
isdn tei-negotiation first-call
!
!
!
!
username cisco password 0 cisco
username ONE password 0 cisco
username TWO password 0 cisco
archive
log config
hidekeys
!
!
!
!
!
!
track 1 ip sla 1 reachability
!
!
!
interface Loopback0
ip address 10.2.2.2 255.255.255.255
!
interface Tunnel1
ip address 10.4.4.2 255.255.255.0
ip ospf network point-to-point
keepalive 10 3
tunnel source FastEthernet0/1
tunnel destination 10.3.3.1
!
interface FastEthernet0/0
description LAN
ip address 10.6.6.1 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/1
description LINK
ip address 10.3.3.2 255.255.255.0
load-interval 30
duplex auto
speed auto
!
interface BRI0/0/0
no ip address
encapsulation ppp
dialer pool-member 1
dialer idle-timeout 60
isdn switch-type basic-net3
isdn point-to-point-setup
no cdp enable
ppp authentication chap
!
interface Dialer0
ip address 10.7.7.2 255.255.255.0
encapsulation ppp
dialer pool 1
dialer remote-name ONE
dialer idle-timeout 60
dialer string 123456789
dialer load-threshold 1 outbound
dialer-group 1
no cdp enable
ppp authentication chap
ppp multilink
!
router ospf 1
log-adjacency-changes
passive-interface default
network 0.0.0.0 255.255.255.255 area 0
!
ip local policy route-map MY-LOCAL-POLICY
ip forward-protocol nd
ip route 0.0.0.0 0.0.0.0 10.4.4.1 track 1
ip route 0.0.0.0 0.0.0.0 10.7.7.1 254
ip http server
no ip http secure-server
!
!
!
ip sla 1
icmp-echo 10.1.1.1
timeout 1000
threshold 2
frequency 3
ip sla schedule 1 life forever start-time now
access-list 101 deny ospf any any
access-list 101 permit ip any any time-range TRADING-HOURS
access-list 111 permit ip 10.6.6.0 0.0.0.255 10.5.5.0 0.0.0.255 time-range TRADING-HOURS
access-list 112 permit icmp any host 10.1.1.1 echo
dialer-list 1 protocol ip list 111
!
!
!
!
route-map MY-LOCAL-POLICY permit 10
match ip address 112
set ip next-hop 10.4.4.1
set interface Dialer0 Null0
!
!
!
control-plane
!
!
!
line con 0
logging synchronous
line aux 0
line vty 0 4
password cisco
login
!
scheduler allocate 20000 1000
time-range TRADING-HOURS
periodic weekdays 8:00 to 18:30
!
end
Router2: Edge router (callee)
------------------------------------------------
version 12.4
service timestamps debug datetime msec
service timestamps log datetime msec
no service password-encryption
!
hostname ONE
!
boot-start-marker
boot-end-marker
!
logging buffered 10000 debugging
enable password cisco
!
no aaa new-model
memory-size iomem 25
clock timezone EET 2
clock summer-time EEST recurring last Sun Mar 3:00 last Sun Oct 3:00
no ip source-route
no ip gratuitous-arps
ip cef
!
!
ip auth-proxy max-nodata-conns 3
ip admission max-nodata-conns 3
!
!
!
isdn switch-type basic-net3
!
!
username ONE password 0 cisco
username TWO password 0 cisco
!
!
!
!
!
!
interface Loopback0
ip address 10.1.1.1 255.255.255.255
!
interface Tunnel1
ip address 10.4.4.1 255.255.255.0
ip ospf network point-to-point
keepalive 10 3
tunnel source FastEthernet0/1
tunnel destination 10.3.3.2
!
interface FastEthernet0/0
description LAN
ip address 10.5.5.1 255.255.255.0
duplex auto
speed auto
!
interface FastEthernet0/1
description LINK
ip address 10.3.3.1 255.255.255.0
duplex auto
speed auto
!
interface BRI0/0/0
description BACKUP ISDN
no ip address
encapsulation ppp
no ip route-cache cef
no ip route-cache
no ip mroute-cache
load-interval 30
dialer pool-member 1
dialer idle-timeout 60
isdn switch-type basic-net3
isdn point-to-point-setup
no keepalive
no fair-queue
no cdp enable
ppp authentication chap
!
interface Dialer0
ip address 10.7.7.1 255.255.255.0
encapsulation ppp
no ip route-cache cef
no ip route-cache
no ip mroute-cache
dialer pool 1
dialer remote-name TWO
dialer idle-timeout 0
dialer-group 1
no cdp enable
ppp authentication chap
ppp multilink
!
router ospf 1
log-adjacency-changes
passive-interface default
network 0.0.0.0 255.255.255.255 area 0
!
ip forward-protocol nd
!
ip http server
no ip http secure-server
!
ip access-list extended dial
permit ip host 10.7.7.1 host 10.7.7.2 time-range TRADING_HOURS
!
access-list 101 deny ospf any any
access-list 101 deny udp any any eq ntp
access-list 101 permit ip any any time-range TRADING_HOURS
access-list 111 permit ip 10.5.5.0 0.0.0.255 10.6.6.0 0.0.0.255 time-range TRADING_HOURS
access-list 111 permit ip host 10.7.7.1 host 10.7.7.2 time-range TRADING_HOURS
access-list 112 permit ip any any time-range TRADING_HOURS
dialer watch-list 1 ip 10.2.2.0 255.255.255.0
dialer-list 1 protocol ip list 111
!
!
control-plane
!
!
line con 0
logging synchronous
line aux 0
line vty 0 4
password cisco
login
!
scheduler allocate 20000 1000
ntp master
time-range TRADING_HOURS
periodic weekdays 8:00 to 18:30
!
end
I have managed so far to make it work with static routes. The thing is: how to make it work with OSPF?
Any help will be appreciated.
Thank you.
Solved! Go to Solution.
07-22-2010 09:18 AM
Hi,
These links should help you to configure OSPF over ISDN:
http://www.cisco.com/en/US/partner/tech/tk365/technologies_tech_note09186a0080094a8f.shtml
http://www.cisco.com/en/US/partner/tech/tk365/technologies_tech_note09186a008009481b.shtml
HTH
Laurent.
07-22-2010 09:18 AM
Hi,
These links should help you to configure OSPF over ISDN:
http://www.cisco.com/en/US/partner/tech/tk365/technologies_tech_note09186a0080094a8f.shtml
http://www.cisco.com/en/US/partner/tech/tk365/technologies_tech_note09186a008009481b.shtml
HTH
Laurent.
11-07-2010 01:12 AM
The issue was fixed with IP SLAs.
Find answers to your questions by entering keywords or phrases in the Search bar above. New here? Use these resources to familiarize yourself with the community: