'\" t
.\"     Title: aecho
.\"    Author: [FIXME: author] [see http://docbook.sf.net/el/author]
.\" Generator: DocBook XSL Stylesheets v1.75.2 <http://docbook.sf.net/>
.\"      Date: 17 Dec 1991
.\"    Manual: Netatalk 2.1
.\"    Source: Netatalk 2.1
.\"  Language: English
.\"
.TH "AECHO" "1" "17 Dec 1991" "Netatalk 2.1" "Netatalk 2.1"
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.nh
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.SH "NAME"
aecho \- send AppleTalk Echo Protocol packets to network hosts
.SH "SYNOPSIS"
.PP
\fBaecho\fR\fB\fR\fB\fR
[
\fB\-c\fR\fI count\fR
] (
\fBaddress\fR
|
\fBnbpname\fR
)
.SH "DESCRIPTION"
.PP
\fBaecho\fR
repeatedly sends an Apple Echo Protocol (AEP) packet to the host specified by the given AppleTalk
\fBaddress\fR
or
\fBnbpname\fR
and reports whether a reply was received\&. Requests are sent at the rate of one per second\&.
.PP
\fBaddress\fR
is parsed by
\fBatalk_aton\fR(3)\&.
\fBnbpname\fR
is parsed by
\fBnbp_name\fR(3)\&. The nbp type defaults to `\fBWorkstation\fR\'\&.
.PP
When
\fBaecho\fR
is terminated, it reports the number of packets sent, the number of responses received, and the percentage of packets lost\&. If any responses were received, the minimum, average, and maximum round trip times are reported\&.
.SH "EXAMPLE"
.PP
Check to see if a particular host is up and responding to AEP packets:
.sp
.if n \{\
.RS 4
.\}
.nf
example% \fBaecho bloodsport
\fR\fB11 bytes from 8195\&.13: aep_seq=0\&. time=10\&. ms
11 bytes from 8195\&.13: aep_seq=1\&. time=10\&. ms
11 bytes from 8195\&.13: aep_seq=2\&. time=10\&. ms
11 bytes from 8195\&.13: aep_seq=3\&. time=10\&. ms
11 bytes from 8195\&.13: aep_seq=4\&. time=10\&. ms
11 bytes from 8195\&.13: aep_seq=5\&. time=9\&. ms\fR\fB
\fR\fB\fB^C\fR\fR\fB
\fR\fB\-\-\-\-8195\&.13 AEP Statistics\-\-\-\-
6 packets sent, 6 packets received, 0% packet loss
round\-trip (ms)  min/avg/max = 9/9/10
\fR
.fi
.if n \{\
.RE
.\}
.SH "OPTIONS"
.PP
\fB\-c\fR\fI count\fR
.RS 4
Stop after
\fIcount\fR
packets\&.
.RE
.SH "SEE ALSO"
.PP
\fBping\fR(1),
\fBatalk_aton\fR(3),
\fBnbp_name\fR(3),
\fBaep\fR(4),
\fBatalkd\fR(8)\&.