10-30-2001 02:07 PM - edited 03-01-2019 07:09 PM
In my Cisco 804 I have two dialer interfaces going to the same ISP; Dialer1 with Multilink PPP and Dialer2 with NO Multilink PPP. I do this for cost savings and the ISP's Multilink is unstable and prone to unbundled redials.
My issue is I have to manually remove one of the default routes or do a Shutdown of one or the other dialer interfaces to make this work, what a drag.
Because of spoofing Dialer1 and Dialer2 appears connected in the routing table and my two default routes try to load balance which I do not want!
The addresses are negotiated; my end gets something from the 66.19.0.0 network and unfortunately the POP end will be something in the 66.19.36.0 network also different each call.
RIP has the ability to know the difference between an UP UP Dialer and a Spoofing UP dialer however that fact seems to do me little good. Policy routing seems very limited for an 804. I am asking if anyone can suggest a solution please. Thank you
version 12.1
no service pad
service timestamps debug datetime msec localtime
service timestamps log datetime msec localtime
no service password-encryption
!
hostname amp/
!
boot system flash c800-y6-mw.121-6
logging buffered 163840 debugging
no logging console
enable secret 5 xxxxxxxxxxxxxxxx
!
clock timezone central -6
clock summer-time CDT recurring
!
dial-peer voice 1 pots
call-waiting
ring 0
port 1
destination-pattern xxxxxxx
!
dial-peer voice 2 pots
call-waiting
ring 0
port 2
destination-pattern xxxxxxx
!
pots country US
no ip subnet-zero
no ip source-route
!
no ip domain-lookup
no ip finger
isdn switch-type basic-ni
!
interface Ethernet0
ip address 1x9.x.1x8.25 255.255.255.248
no ip proxy-arp
ip nat inside
no ip split-horizon
no cdp enable
!
interface BRI0
no ip address
ip nat outside
encapsulation ppp
no ip split-horizon
no logging event link-status
dialer pool-member 1
dialer pool-member 2
isdn switch-type basic-ni
isdn spid1 xxxxxxxxx10101 xxxxxxx
isdn spid2 xxxxxxxxx30101 xxxxxxx
isdn voice-priority xxxxxxx in always
isdn voice-priority xxxxxxx in always
isdn voice-priority xxxxxxx out always
isdn voice-priority xxxxxxx out always
isdn incoming-voice modem
no fair-queue
no cdp enable
!
interface Dialer1
ip address negotiated
no ip proxy-arp
ip nat outside
encapsulation ppp
no ip split-horizon
no logging event link-status
dialer pool 1
dialer remote-name MLP
dialer idle-timeout 3600
dialer fast-idle 3600
dialer string 17733537827
dialer hold-queue 10
dialer load-threshold 1 either
dialer-group 1
no fair-queue
no cdp enable
ppp authentication pap callin
ppp pap sent-username amp/ password 7 xxxxxxxxxxxxxx
ppp multilink
!
interface Dialer2
ip address negotiated
no ip proxy-arp
ip nat outside
encapsulation ppp
no ip split-horizon
no logging event link-status
dialer pool 2
dialer remote-name PPP
dialer idle-timeout 3600
dialer fast-idle 3600
dialer string 17733537827
dialer hold-queue 10
dialer-group 2
no fair-queue
no cdp enable
ppp authentication pap callin
ppp pap sent-username amp/ password 7 xxxxxxxxxxxx
!
ip nat inside source route-map MLP interface Dialer1 overload
ip nat inside source route-map PPP interface Dialer2 overload
no ip http server
ip classless
ip route 0.0.0.0 0.0.0.0 Dialer2
ip route 0.0.0.0 0.0.0.0 Dialer1
!
access-list 101 permit ip 1x9.x.1x8.24 0.0.0.7 any
access-list 101 deny ip host 1x9.x.1x8.25 any
access-list 101 permit icmp any host 206.141.239.142 echo
access-list 102 permit ip 1x9.x.1x8.24 0.0.0.7 any
access-list 102 deny ip host 1x9.x.1x8.25 any
access-list 102 permit icmp any host 216.239.33.100 echo
dialer-list 1 protocol ip list 101
dialer-list 2 protocol ip list 102
no cdp run
route-map PPP permit 1
match ip address 102
match interface Dialer2
!
route-map MLP permit 1
match ip address 101
match interface Dialer1
!
line con 0
exec-timeout 0 0
transport input none
stopbits 1
line vty 0 4
exec-timeout 0 0
password cisco
login
!
sntp server 64.24.52.1 version 3
10-30-2001 02:32 PM
I still do not understand why you have the two dialers. But if you want to prefer one dialer (and hence one route) over the other, make the undesirable route a higher metric i.e. ip route 0.0.0.0 0.0.0.0 Dialer1 5
10-31-2001 12:57 PM
Thanks for the response. The reason I need two dialers to the same location is so I can choose between one channel ISDN 64 or Two channel 128. Your suggestion will not work because the routing table considers both dialers as up (spoofing) even though I really have only one or the other dialer connected at a given time, so the default route in your example is always dialer2 regardless of which is connected to the ISP. I guess there is no solution and I am stuck reconfiguring one or the other.
11-01-2001 08:56 AM
I see. What decision process do you use to determine whether you want 64k or 128k access?
11-02-2001 02:39 PM
Hello
Below is a better configuration. This is what I used before my ISP changed out all of the host POP equipment. I connect a ISDN 64 connection with a simple ping shortcut on my desktop to host 216.239.33.100 (dialer2 access list 102) or ISDN 128 via pinging host 206.141.239.142 (dialer1 access list 101). Then it was easy to do what I want. Every time I would connect, the next hop address (POP site 192.168.254.1) was always the same, only my end negotiated a different address each call. Since the same next hop address would always appear in the routing table, once connected a simple default route to 192.168.254.1 worked. With the new ISP POP routers the addresses are negotiated or different with every new connection. My end gets something from the 66.19.0.0 network and unfortunately the POP end will be something in the 66.19.36.0 network also different each call. Thank you.
version 12.1
no service pad
service timestamps debug datetime msec localtime
service timestamps log datetime msec localtime
no service password-encryption
!
hostname amp/
!
boot system flash c800-y6-mw.121-6
logging buffered 163840 debugging
no logging console
enable secret 5 xxxxxxxxxxxxxxxx
!
clock timezone central -6
clock summer-time CDT recurring
!
dial-peer voice 1 pots
call-waiting
ring 0
port 1
destination-pattern xxxxxxx
!
dial-peer voice 2 pots
call-waiting
ring 0
port 2
destination-pattern xxxxxxx
!
pots country US
no ip subnet-zero
no ip source-route
!
no ip domain-lookup
no ip finger
isdn switch-type basic-ni
!
interface Ethernet0
ip address 1x9.x.1x8.25 255.255.255.248
no ip proxy-arp
ip nat inside
no ip split-horizon
no cdp enable
!
interface BRI0
no ip address
ip nat outside
encapsulation ppp
no ip split-horizon
no logging event link-status
dialer pool-member 1
dialer pool-member 2
isdn switch-type basic-ni
isdn spid1 xxxxxxxxx10101 xxxxxxx
isdn spid2 xxxxxxxxx30101 xxxxxxx
isdn voice-priority xxxxxxx in always
isdn voice-priority xxxxxxx in always
isdn voice-priority xxxxxxx out always
isdn voice-priority xxxxxxx out always
isdn incoming-voice modem
no fair-queue
no cdp enable
!
interface Dialer1
ip address negotiated
no ip proxy-arp
ip nat outside
encapsulation ppp
no ip split-horizon
no logging event link-status
dialer pool 1
dialer remote-name MLP
dialer idle-timeout 3600
dialer fast-idle 3600
dialer string 17733537827
dialer hold-queue 10
dialer load-threshold 1 either
dialer-group 1
no fair-queue
no cdp enable
ppp authentication pap callin
ppp pap sent-username amp/ password 7 xxxxxxxxxxxxxx
ppp multilink
!
interface Dialer2
ip address negotiated
no ip proxy-arp
ip nat outside
encapsulation ppp
no ip split-horizon
no logging event link-status
dialer pool 2
dialer remote-name PPP
dialer idle-timeout 3600
dialer fast-idle 3600
dialer string 17733537827
dialer hold-queue 10
dialer-group 2
no fair-queue
no cdp enable
ppp authentication pap callin
ppp pap sent-username amp/ password 7 xxxxxxxxxxxx
!
ip nat inside source route-map MLP interface Dialer1 overload
ip nat inside source route-map PPP interface Dialer2 overload
no ip http server
ip classless
ip route 0.0.0.0 0.0.0.0 192.168.254.1
ip route 206.141.239.142 255.255.255.255 Dialer1
ip route 216.239.33.100 255.255.255.255 Dialer2
!
access-list 18 permit 199.3.168.24 0.0.0.7
access-list 101 deny ip host 199.3.168.25 any
access-list 101 permit ip any host 206.141.239.142
access-list 101 permit udp any any eq domain
access-list 102 deny ip host 199.3.168.25 any
access-list 102 permit ip any host 216.239.33.100
access-list 102 permit udp any any eq domain
dialer-list 1 protocol ip list 101
dialer-list 2 protocol ip list 102
no cdp run
route-map PPP permit 1
match ip address 18
match interface Dialer2
!
route-map MLP permit 1
match ip address 18
match interface Dialer1
!
line con 0
exec-timeout 0 0
transport input none
stopbits 1
line vty 0 4
exec-timeout 0 0
password cisco
login
!
sntp server 64.24.52.1 version 3
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