Which configuration summarizes external routes in the 172.16.0.0/22 range into a single prefix on
an ABR for Area 1?
A.
protocols {
ospf {
area 0.0.0.1 {
nssa {
default-lsa {
default-metric 1;
metric-type 1;
}
area-range 172.16.0.0/22;
}
B.
protocols {
ospf {
area 0.0.0.1 {
nssa {
area-range 172.16.0.0/22;
}
C.
protocols {
ospf {
area 0.0.0.1 {
stub summaries;
}
D.
protocols {
ospf {
area 0.0.0.1 {
nssa;
area-range 172.16.0.0/22 restrict;
}