Some Cisco routers are connected via an ATM cloud with E3 or STM-1
WAN interface. With CDP active (default setup) no router show any
output when "sh cdp neighbors" is issued (on the ATM interface).
In the LAN interface the CDP works fine. This is a config. sample.
My question is: why the "sh cdp nei" doesn't show any neighborship
between ATM interfaces ?
Interface ATM0/0/0.1 point-to-point
ip address xx.xx.xx.xx 255.255.255.252
no ip redirects
no ip proxy-arp
clns router isis area_bb
pvc PVCNAME 21/101
vbr-nrt 583 583 1376
oam retry 3 5 1