I would assume the multilink interface on R2 been shut down is the issueinterface Multilink3 ip address 172.28.235.37 255.255.255.252 shutdown <------------------- do a no shut on this interface ppp multilink ppp multilink interleave ppp multilink gr...

You need to press Ctrl-V before the ?Further details can be found here http://www.petri.co.il/csc_configuring_dynamic_dns_in_cisco_ios.htm#

The CISCO3845-V3PN/K9 was replaced by the C3845-H-VSEC/K9 according to Cisco's EOS sheet the CISCO3845-V3PN/K9 was removed from HW support when the C3845-H-VSEC/K9 went on sale "Customers will continue to receive support from the Cisco TechnicalAssis...