We have 3745 series router on which we have chnnelised E1 controller with 30 64 kbps links leased lines . These links are up and working with HDLC encapsulation. But when we are trying to encapsulate few of links in ppp , protocol is not comig up. Is it necessary that all 64 kbps links must b eencapsulated with ppp ?
when we check show cdp ne , we see that it has found a cisco router of other side of lease line.
Has it anything to do with IOS of both side routers.
Any link on cisco.com is appreciated.
Thanks in aadvance