IP Configuration
Domain Name System
Cisco 350XG & 550XG Series 10G Stackable Managed Switches
365
16
•
Dynamic Entries
—These are mapping pairs that were either added by the
system as a result of being used by the user, or and an entry for each IP
address configured on the device by DHCP. There can be 256 dynamic
entries.
Name resolution always begins by checking static entries, continues by checking
the dynamic entries, and ends by sending requests to the external DNS server.
Eight IP addresses are supported per DNS server per host name.
To add a host name and its IP address:
STEP 1
Click
IP Configuration
>
Domain Name System
>
Host Mapping
.
STEP 2
If required, select the
Clear Table
option to clear some or all of the entries in the
Host Mapping Table.
•
Static Only—Deletes the static hosts.
•
Dynamic Only—Deletes the dynamic hosts.
•
All Dynamic & Static—Deletes the static and dynamic hosts.
The Host Mapping Table displays the following fields:
•
Host Name
—User-defined host name or fully-qualified name.
•
IP Address
—The host IP address.
•
IP Version
—IP version of the host IP address.
•
Type
—Is this a
Dynamic
or
Static
entry to the cache.
•
Status
— Displays the results of attempts to access the host
-
OK
—Attempt succeeded.
-
Negative Cache
—Attempt failed, do not try again.
-
No Response
—There was no response, but system can try again in
future.
•
TTL (Sec)
— If this is a dynamic entry, how long will it remain in the cache.
•
Remaining TTL (Sec)
— If this is a dynamic entry, how much longer will it
remain in the cache.
STEP 3
To add a host mapping, click
Add
.
