Cisco Cisco Email Security Appliance C160 Guía Del Usuario
35-20
User Guide for AsyncOS 9.8 for Cisco Email Security Appliances
Chapter 35 Managing and Monitoring Using the CLI
Monitoring Using the CLI
Checking the DNS Status
The
dnsstatus
command returns a counter displaying statistics of DNS lookup and cache information.
For each counter, you can view the total number of events since the counter was last reset, since the last
system reboot, and over the lifetime of the system.
system reboot, and over the lifetime of the system.
lists the available counters.
8 mail.remotedomain08.com 172.16.0.9 Incoming01 3
9 mail.remotedomain09.com 172.16.0.10 Incoming01 3
10 mail.remotedomain10.com 172.16.0.11 Incoming01 2
11 mail.remotedomain11.com 172.16.0.12 Incoming01 2
12 mail.remotedomain12.com 172.16.0.13 Incoming02 2
13 mail.remotedomain13.com 172.16.0.14 Incoming01 2
14 mail.remotedomain14.com 172.16.0.15 Incoming01 2
15 mail.remotedomain15.com 172.16.0.16 Incoming01 2
16 mail.remotedomain16.com 172.16.0.17 Incoming01 2
17 mail.remotedomain17.com 172.16.0.18 Incoming01 1
18 mail.remotedomain18.com 172.16.0.19 Incoming02 1
19 mail.remotedomain19.com 172.16.0.20 Incoming01 1
20 mail.remotedomain20.com 172.16.0.21 Incoming01 1
Table 35-10
Data in the dnsstatus Command
Statistic
Description
DNS Requests
A top-level, non-recursive request to the system DNS cache to resolve a
domain name.
domain name.
Network Requests
A request to the network (non-local) to retrieve DNS information.
Cache Hits
A request to the DNS cache where the record was found and returned.
Cache Misses
A request to the DNS cache where the record was not found.