BinTec X4000, User Manual

Page: 257 / 498

X4000 User’s Guide 257
Basic IP Settings
8
IP
➧
DNS
➧
D
YNAMIC
C
ACHE
contains the following fields:
Field Meaning
Name Host name, which is assigned the Address
with this dynamic entry in the cache.
Address IP address, which is assigned to Name.
Resp Defines the type of dynamic entry. Possible
values:
■
positive: A DNS request for Name is
answered with the associated IP address
from the cache.
■
negative: A DNS request for Name is
answered with a negative answer from the
cache.
TTL Indicates how many seconds the dynamic entry
remains in the cache. The entry is deleted on
expiry of TTL.
When a positive dynamic entry is saved in the
cache, the value of the TTL field (= Time To
Live in s) contained in the DNS record is used.
If the TTL field in the DNS record is set to 0 or
exceeds Maximum TTL for Pos Cache
Entries, the value Maximum TTL for Pos
Cache Entries is used when saving the entry.
When a negative dynamic entry is saved in the
cache, Maximum TTL for Neg Cache Entries
is always assigned as this value.
Ref Indicates how often the entry has been
referenced, i.e. how often a DNS request has
been answered with the entry from the cache.