1 #!/bin/sh 2 3 ################################################################################ 4 ## ## 5 ## Copyright (c) International Business Machines Corp., 2005 ## 6 ## ## 7 ## This program is free software; you can redistribute it and#or modify ## 8 ## it under the terms of the GNU General Public License as published by ## 9 ## the Free Software Foundation; either version 2 of the License, or ## 10 ## (at your option) any later version. ## 11 ## ## 12 ## This program is distributed in the hope that it will be useful, but ## 13 ## WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY ## 14 ## or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License ## 15 ## for more details. ## 16 ## ## 17 ## You should have received a copy of the GNU General Public License ## 18 ## along with this program; if not, write to the Free Software ## 19 ## Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA ## 20 ## ## 21 ## ## 22 ################################################################################ 23 # 24 # File: 25 # check_icmpv4_connectivity 26 # 27 # Description: 28 # Check the ICMPv4 connectivity from a interface to an IPv4 address 29 # 30 # Arguments: 31 # $1: source interface name 32 # $2: destination IPv4 address 33 # 34 # Returns: 35 # 0: connectivity is good 36 # 1: connectivity is someting wrong 37 # 38 # Author: 39 # Mitsuru Chinen <mitch (at] jp.ibm.com> 40 # 41 # History: 42 # Oct 19 2005 - Created (Mitsuru Chinen) 43 # 44 #----------------------------------------------------------------------- 45 #Uncomment line below for debug output. 46 #trace_logic=${trace_logic:-"set -x"} 47 $trace_logic 48 49 # The max number of ICMP echo request 50 PING_MAX=10 51 52 # Check the arguments 53 if [ $# -ne 2 ]; then 54 echo "Usage: $0 source_interface_name destionation_ipv4_address" >&2 55 exit 1 56 fi 57 src_ifname=$1 58 dst_ipv4addr=$2 59 60 cnt=0 61 while [ $cnt -lt $PING_MAX ]; do 62 cnt=`expr $cnt + 1` 63 ping -I $src_ifname -c 1 $dst_ipv4addr -w 1 > /dev/null 2>&1 64 if [ $? -eq 0 ]; then 65 exit 0 66 fi 67 sleep 1 68 done 69 70 exit 1 71
