I've a ISR 4331 running 15.5(3)S4b. Once in a while we loose the uplink connection. The dialer stays up but IP doesn't work anymore. Does anyone have a clue? I did search the bug database but found nothing.
interface Dialer1 mtu 1492 ip address negotiated no ip redirects no ip unreachables no ip proxy-arp encapsulation ppp dialer pool 1 dialer-group 1 ppp authentication pap callin ppp pap sent-username <removed> password <removed> no cdp enable ip virtual-reassembly
ip route 172.31.255.139 255.255.255.255 Dialer1
dialer-list 1 protocol ip permit
172.31.255.139 is the BGP neighbor we get a default route from.
Now and then the IP connectivity over the dialer stops. We can't ping our BGP neighbor. A shut / no shut on the dialer solves the problem.
I think it's a bug. But how do I find it in the database?