I've 1600 at remote and 2611 at HQ connected by ISDN.
whenever I put "ppp multilink" command at both routers, I cannot ping to each other. When I remove the "ppp multilink" - connection OK. So I cannot have 128kbps connection. the configuration is as below:
RouterA (1600 - remote)
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RouterA(config)#username RouterB password cisco
RouterA(config)#isdn switch-type basic-net3
RouterA(config)#interface BRI0
RouterA(config-if)#ip address 10.100.100.14 255.255.255.252
RouterA(config-if)#encapsulation ppp
RouterA(config-if)#ppp authentication chap
RouterA(config-if)#ppp multilink
RouterA(config-if)#dialer idle-timeout 180
RouterA(config-if)#dialer map ip 10.100.100.13 21455522
RouterA(config-if)#dialer map ip 10.100.100.13 21455523
RouterA(config-if)#dialer load-threshold 125
RouterA(config-if)#dialer-group 1
RouterA(config)#dialer-list 1 protocol ip
RouterA(config)#ip route 10.0.0.0 255.0.0.0 10.100.100.13
RouterB (HQ)
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RouterB(config)#username RouterA password cisco
RouterB (config)#isdn switch-type basic-net3
RouterB (config)#interface BRI0
RouterB (config-if)#ip address 10.100.100.13 255.255.255.252
RouterB (config-if)#encapsulation ppp
RouterB (config-if)#ppp authentication chap
RouterB (config-if)#ppp multilink
RouterB (config-if)#dialer idle-timeout 180
RouterB (config-if)#dialer map ip 10.100.100.14 2146633
RouterB (config-if)#dialer map ip 10.100.100.14 2147744
RouterB (config-if)#dialer load-threshold 125
RouterB (config-if)#dialer-group 1
RouterB (config)#dialer-list 1 protocol ip
RouterB (config)#ip route 10.1.5.0 255.255.255.0 10.100.100.14
RouterB (config)#router eigrp 10
RouterB (config-route)#network 10.0.0.0
RouterB (config-route)#redistribute static
