In SPRING a time when segment and routing had no mismatch, a time when isis and ospf ate a forbidden encap, all they had to do was forward bgp like its hot, but crazy flapping doesnt leave any real LDP without some real FSM check, My dynamic unnumbered neighbor.
Suddenly, Out of order, an AS is overridden, we see frames dropping, we sniff a bit and it turns out, sfps are burning, we are in a place right now where ping and pong are jittery, their latency is tested, they cant strengthen their icmp bond with a warm bfd message, how can they keep everyone in ACK, safe from teardown and dampening, with this kind of ixp relationship??! but oh admin, we know forwarding works in its own mysterious ways. We are left with two non rfc compliant scavengers, bastard 802.1ah fools in a leaky yet shaped, buffer display of some runts and nimbles, and a giant too.
They start their life of a packet, leaving one interface to a neighbor, from an adjacency to a peer, an endless loop, its a prefix hijack, but as they move from one stack to another, finding their way through a tunnel of memory failures and RMAs, one hell of an LSP ride, through firewall horrors and MTU mismatches, leaving behind, a sea of syslog messages and snmp alarms. Anyway, Their ttl expired and one funny access list abruptly denies them life, sending them to Null0, where they can be peacefully discarded.
Thats what tech does to yeh