pmdacisco - Cisco router performance metrics domain agent (PMDA)
$PCP_PMDAS_DIR/cisco/pmdacisco [-d domain] [-l logfile] [-U username] [-P password] [-r
refresh] [-s prompt] [-M username] [-x port] host:interface-spec [...]
$PCP_PMDAS_DIR/cisco/parse [options] host:interface-spec [...]
$PCP_PMDAS_DIR/cisco/probe [-P password] [-s prompt] [-U username] [-x port] host
pmdacisco is a Performance Metrics Domain Agent (PMDA) which extracts performance metrics
from one or more Cisco routers.
A brief description of the pmdacisco command line options follows:
-d It is absolutely crucial that the performance metrics domain number specified here is
unique and consistent. That is, domain should be different for every PMDA on the one
host, and the same domain number should be used for the same PMDA on all hosts.
-l Location of the log file. By default, a log file named cisco.log is written in the
current directory of pmcd(1) when pmdacisco is started, i.e. $PCP_LOG_DIR/pmcd. If
the log file cannot be created or is not writable, output is written to the standard
-P By default, it is assumed that no user-level password is required to access the
Cisco's telnet port. If user-level passwords have been enabled on the Ciscos, then
those passwords must be specified to pmdacisco. If specified with the -P option,
password will be used as the default user-level password for all Ciscos. See also
the INTERFACE IDENTIFICATION section below.
-r pmdacisco will refresh the current values for all performance metrics by contacting
each Cisco router once every refresh seconds. The default refresh is 120 seconds.
-s The Cisco command prompt ends with the string prompt. The default value is ``>''.
The only way pmdacisco can synchronize the sending of commands and the parsing of
output is by recognizing prompt as a unique string that comes at the end of all out-
put, i.e. as the command prompt when waiting for the next command.
-U By default, it is assumed that no username login is required to access the Cisco's
telnet port. If username login has been enabled on the Ciscos, then the correspond-
ing usernames must be specified to pmdacisco. If specified with the -U option, user-
name will be used as the default username login for all Ciscos. See also the INTER-
FACE IDENTIFICATION section below.
-M User account under which to run the agent. The default is the unprivileged "pcp"
account in current versions of PCP, but in older versions the superuser account
("root") was used by default.
-x Connect to the Cisco via TCP port number port rather than the default 23 for a telnet
For each interface, once the telnet connection is established, pmdacisco is willing to
wait up to 5 seconds for the Cisco to provide a new snapshot of the requested information.
If this does not happen, the telnet connection is broken and no values are returned. This
prevents pmdacisco tying up the Cisco's telnet ports waiting indefinitely when the
response from the router is not what is expected, e.g. if the format of the ``show int''
output changes, or the command is in error because an interface is no longer configured on
As each Cisco router can support multiple network interfaces and/or multiple communica-
tions protocols, it is necessary to tell pmdacisco which interfaces are to be monitored.
The host:interface-spec arguments on the command line define a particular interface on a
particular Cisco router. host should be a hostname or a ``dot-notation'' IP address that
identifies the telnet port of a particular Cisco router. There are several components of
the interface-spec as follows.
One of the abbreviations a, B, E, e, f, G, h, s or Vl respectively for ATM, BRI
(ISDN), FastEthernet, Ethernet, FDDI, GigabitEthernet, HSSI, serial or Vlan.
Depending on the model of the Cisco, this will either be an integer, e.g. s0, or an
integer followed by a slash (``/'') followed by a subinterface identification in
one of a variety of syntactic forms, e.g. e1/0, G0/0/1 or s4/2.1.
To discover the valid interfaces on a particular Cisco, connect to the telnet port
(using telnet(1)) and enter the command "show int" and look for the interface iden-
tifiers following the keywords ``Ethernet'', ``Fddi'', ``Serial'', etc.
Alternatively run the probe command.
If there is a username login, and it is different to the default (see -U above), it
may be optionally specified here by appending ``@'' and the username to the end of
If there is a user-level password, and it is different to the default (see -P
above), it may be optionally specified here by appending a question mark (``?'')
and the password to the end of interface-spec.
prompt If the Cisco command prompt is different to the default (see -s above), it may be
optionally specified here by appending an exclamation mark (``!'') and the prompt
to the end of interface-spec.
The following are examples of valid interface-spec arguments.
The probe command may be used to discover the names of all interfaces for a particular
Cisco router identified by host. The -P argument is the same as for pmdacisco.
The parse command takes exactly the same arguments as pmdacisco, but executes outside the
control of any pmcd(1) and so may be used to diagnose problems with handling a particular
Cisco router and/or one of its interfaces.
Additional diagnostic verbosity may be produced using the -D appl0,appl1,appl2 command
line option. appl0 logs connect and disconnect events, login progress, high-level flow of
control and extracted statistics. appl1 traces all commands sent to the Cisco device.
appl2 logs tokenizing and parsing of the output from the Cisco device. Diagnostics are
generated on standard error as each sample is fetched and parsed.
If you want access to the names, help text and values for the Cisco performance metrics,
do the following as root:
# cd $PCP_PMDAS_DIR/cisco
If you want to undo the installation, do the following as root:
# cd $PCP_PMDAS_DIR/cisco
pmdacisco is launched by pmcd(1) and should never be executed directly. The Install and
Remove scripts notify pmcd(1) when the agent is installed or removed.
command line options used to launch pmdacisco
default help text file for the Cisco metrics
installation script for the pmdacisco agent
undo installation script for the pmdacisco agent
default log file for error messages and other information from pmdacisco
Environment variables with the prefix PCP_ are used to parameterize the file and directory
names used by PCP. On each installation, the file /etc/pcp.conf contains the local values
for these variables. The $PCP_CONF variable may be used to specify an alternative config-
uration file, as described in pcp.conf(5).
pmcd(1), pcp.conf(5) and pcp.env(5).
Performance Co-Pilot PCP PMDACISCO(1)