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1#!/bin/sh
2#
1#!/bin/sh
2#
3# Copyright (c) 2010, Yavuz Gokirmak
3# Copyright (c) 2010, Yavuz Gokirmak
4#
5# All rights reserved.
6#
7# This source code may be used, modified, copied, distributed, and
8# sold, in both source and binary form provided that the above
9# copyright and these terms are retained, verbatim, as the first
10# lines of this file. Under no circumstances is the author
11# responsible for the proper functioning of the software nor does
12# the author assume any responsibility for damages incurred with
13# its use.
14#
4#
5# All rights reserved.
6#
7# This source code may be used, modified, copied, distributed, and
8# sold, in both source and binary form provided that the above
9# copyright and these terms are retained, verbatim, as the first
10# lines of this file. Under no circumstances is the author
11# responsible for the proper functioning of the software nor does
12# the author assume any responsibility for damages incurred with
13# its use.
14#
15# $FreeBSD: head/share/examples/netgraph/virtual.chain 214306 2010-10-24 22:59:38Z julian $
15# $FreeBSD: head/share/examples/netgraph/virtual.chain 222179 2011-05-22 14:23:48Z uqs $
16#
16#
17#
18# This script creates and connects n router like nodes. Complex wide
19# area topologies can be created with the help of script.
20#
21# Virtual nodes are generated via jails and network connections are
22# established using ng_eiface(4) node types.
23#
24# To use this script:
25#
26# 0. Make your own copy of this example script.
27#
17# This script creates and connects n router like nodes. Complex wide
18# area topologies can be created with the help of script.
19#
20# Virtual nodes are generated via jails and network connections are
21# established using ng_eiface(4) node types.
22#
23# To use this script:
24#
25# 0. Make your own copy of this example script.
26#
28# 1. Edit the definition of ${TARGET_TOPOLOGY} to define your virtual
27# 1. Edit the definition of ${TARGET_TOPOLOGY} to define your virtual
29# nodes. Virtual topology definition includes node names and their
28# nodes. Virtual topology definition includes node names and their
30# IP address. Target top. sytax: ( name|ip<->name|ip ... )
29# IP address. Target top. syntax: ( name|ip<->name|ip ... )
31# Example 1: ( n1|10.0.2.1/30<->n2|10.0.2.2/30 ...)
32# Example 2: ( n1|2001:b90::14a/125<->n1|2001:b90::14b/125 ...)
33#
34# 2. Run this script with "start" as the command line argument.
35#
36# 3. Add necessary static route commands for each virtual node. For
37# example assume you have three virtual nodes connected each other
30# Example 1: ( n1|10.0.2.1/30<->n2|10.0.2.2/30 ...)
31# Example 2: ( n1|2001:b90::14a/125<->n1|2001:b90::14b/125 ...)
32#
33# 2. Run this script with "start" as the command line argument.
34#
35# 3. Add necessary static route commands for each virtual node. For
36# example assume you have three virtual nodes connected each other
38# llike a chain ( n1 is connected to n2, n2 is connecte to n3 ).
39# In order to estabklish connectivity among these virtual nodes,
37# like a chain (n1 is connected to n2, n2 is connected to n3).
38# In order to establish connectivity among these virtual nodes,
40# you have to add default routes to node n1 and node n3. Example
41# static route command is:
39# you have to add default routes to node n1 and node n3. Example
40# static route command is:
42# STATIC_ROUTE0="jexec n1 route add -inet default 10.0.2.2"
43# STATIC_ROUTE1="jexec n3 route add -inet default 10.0.2.5"
44# After defining default routes with above format you have to set
41# STATIC_ROUTE0="jexec n1 route add -inet default 10.0.2.2"
42# STATIC_ROUTE1="jexec n3 route add -inet default 10.0.2.5"
43# After defining default routes with above format you have to set
45# the total number of static route commands as:
46# STATIC_ROUTE_CNT=2
47#
48# 4. Stop bridging by running this script with "stop" as the
49# command line argument.
44# the total number of static route commands as:
45# STATIC_ROUTE_CNT=2
46#
47# 4. Stop bridging by running this script with "stop" as the
48# command line argument.
50#
51# 5. This cript uses a template file in order to carry information
52# between start and stop calls.
49#
50# 5. This script uses a template file in order to carry information
51# between start and stop calls.
53# In the start call, the netgraph interfaces and jails are created.
54# At the stop phase, all created objects should be removed.
55# DO NOT delete the temporary file between the start and stop phases.
56#
57# Target Topology:
58#
59# +---------------+ +---------------------------------------------+
60# | n1 (vimage) | | n2 (vimage) |

--- 18 unchanged lines hidden (view full) ---

79# | +-----------+ | | +-----------+ |
80# | | | |
81# | n3 (vimage) | | n4 (vimage) |
82# +---------------+ +---------------+
83#
84#
85#
86
52# In the start call, the netgraph interfaces and jails are created.
53# At the stop phase, all created objects should be removed.
54# DO NOT delete the temporary file between the start and stop phases.
55#
56# Target Topology:
57#
58# +---------------+ +---------------------------------------------+
59# | n1 (vimage) | | n2 (vimage) |

--- 18 unchanged lines hidden (view full) ---

78# | +-----------+ | | +-----------+ |
79# | | | |
80# | n3 (vimage) | | n4 (vimage) |
81# +---------------+ +---------------+
82#
83#
84#
85
87# List the names of virtual nodes and their IP addresses. Use ':'
88# character to seperate node name from node IP address and netmask.
86# List the names of virtual nodes and their IP addresses. Use ':'
87# character to separate node name from node IP address and netmask.
89
90TARGET_TOPOLOGY="n1|10.0.2.1/30<->n2|10.0.2.2/30 n2|10.0.2.5/30<->n3|10.0.2.6/30 n2|10.0.2.9/30<->n4|10.0.2.10/30"
91STATIC_ROUTE0="jexec n1 route add -inet default 10.0.2.2"
92STATIC_ROUTE1="jexec n3 route add -inet default 10.0.2.5"
93STATIC_ROUTE2="jexec n4 route add -inet default 10.0.2.9"
94STATIC_ROUTE_CNT=3
95
88
89TARGET_TOPOLOGY="n1|10.0.2.1/30<->n2|10.0.2.2/30 n2|10.0.2.5/30<->n3|10.0.2.6/30 n2|10.0.2.9/30<->n4|10.0.2.10/30"
90STATIC_ROUTE0="jexec n1 route add -inet default 10.0.2.2"
91STATIC_ROUTE1="jexec n3 route add -inet default 10.0.2.5"
92STATIC_ROUTE2="jexec n4 route add -inet default 10.0.2.9"
93STATIC_ROUTE_CNT=3
94
96# MAC manifacturer prefix. This can be modified according to needs.
97MAC_PREFIX="00:1d:92"
95# MAC manufacturer prefix. This can be modified according to needs.
96MAC_PREFIX="00:1d:92"
98
97
99# Temporary file is important for proper execution of script.
98# Temporary file is important for proper execution of script.
100TEMP_FILE="/var/tmp/.virtual.chain.tmp"
101
102# Set root directory for jails to be created.
103JAIL_PATH="/usr/jails/router"
104
105
106####################################################################
107#### Nothing below this point should need to be modified. ####
108####################################################################
109
110
111# Start/restart routine.
112virtual_chain_start() {
113
114 # Load netgraph KLD's as necessary.
99TEMP_FILE="/var/tmp/.virtual.chain.tmp"
100
101# Set root directory for jails to be created.
102JAIL_PATH="/usr/jails/router"
103
104
105####################################################################
106#### Nothing below this point should need to be modified. ####
107####################################################################
108
109
110# Start/restart routine.
111virtual_chain_start() {
112
113 # Load netgraph KLD's as necessary.
115
114
116 for KLD in ng_ether ng_bridge ng_eiface; do
117 if ! kldstat -v | grep -qw ${KLD}; then
118 echo -n "Loading ${KLD}.ko... "
119 kldload ${KLD} || exit 1
120 echo "done"
121 fi
122 done
123
124 # Reset all interfaces and jails. If temporary file can not be found
115 for KLD in ng_ether ng_bridge ng_eiface; do
116 if ! kldstat -v | grep -qw ${KLD}; then
117 echo -n "Loading ${KLD}.ko... "
118 kldload ${KLD} || exit 1
119 echo "done"
120 fi
121 done
122
123 # Reset all interfaces and jails. If temporary file can not be found
125 # script assumes that there is no previous configuration.
126
124 # script assumes that there is no previous configuration.
125
127 if [ ! -e ${TEMP_FILE} ]; then
128 echo "No previous configuration(${TEMP_FILE}) found to clean-up."
129 else
130 echo -n "Cleaning previous configuration..."
131 virtual_chain_stop
132 echo "done"
126 if [ ! -e ${TEMP_FILE} ]; then
127 echo "No previous configuration(${TEMP_FILE}) found to clean-up."
128 else
129 echo -n "Cleaning previous configuration..."
130 virtual_chain_stop
131 echo "done"
133 fi
132 fi
134
133
135 # Create temporary file for usage. This file includes generated
134 # Create temporary file for usage. This file includes generated
136 # interface names and jail names. All bridges, interfaces and jails
135 # interface names and jail names. All bridges, interfaces and jails
137 # are written to file while created. In clean-up process written
138 # objects are cleaned (i.e removed) from system.
139
136 # are written to file while created. In clean-up process written
137 # objects are cleaned (i.e. removed) from system.
138
140 if [ -e ${TEMP_FILE} ]; then
141 touch ${TEMP_FILE}
142 fi
143
144
145 # Attach other interfaces as well.
146 for CONNECTION in ${TARGET_TOPOLOGY}; do
139 if [ -e ${TEMP_FILE} ]; then
140 touch ${TEMP_FILE}
141 fi
142
143
144 # Attach other interfaces as well.
145 for CONNECTION in ${TARGET_TOPOLOGY}; do
147
146
148 # Virtual connections are defined in TARGET_TOPOLOGY variable.
149 # They have the form of 'nodeName|IPaddr'. Below two lines split
147 # Virtual connections are defined in TARGET_TOPOLOGY variable.
148 # They have the form of 'nodeName|IPaddr'. Below two lines split
150
149
151 PEER1=`echo ${CONNECTION} | awk -F"<->" '{print $1}'`
152 PEER1_NAME=`echo ${PEER1} | awk -F"|" '{print $1}'`
153 PEER1_IP=`echo ${PEER1} | awk -F"|" '{print $2}'`
150 PEER1=`echo ${CONNECTION} | awk -F"<->" '{print $1}'`
151 PEER1_NAME=`echo ${PEER1} | awk -F"|" '{print $1}'`
152 PEER1_IP=`echo ${PEER1} | awk -F"|" '{print $2}'`
154
153
155 PEER2=`echo ${CONNECTION} | awk -F"<->" '{print $2}'`
156 PEER2_NAME=`echo ${PEER2} | awk -F"|" '{print $1}'`
157 PEER2_IP=`echo ${PEER2} | awk -F"|" '{print $2}'`
158
159 # !!! if not created already..
154 PEER2=`echo ${CONNECTION} | awk -F"<->" '{print $2}'`
155 PEER2_NAME=`echo ${PEER2} | awk -F"|" '{print $1}'`
156 PEER2_IP=`echo ${PEER2} | awk -F"|" '{print $2}'`
157
158 # !!! if not created already..
160 # Create virtual node (jail) with given name and using
159 # Create virtual node (jail) with given name and using
161 # JAIL_PATH as root directory for jail.
162
163 virtual_chain_create_peer_if_necessary ${PEER1_NAME}
164 virtual_chain_create_peer_if_necessary ${PEER2_NAME}
165
166 # create an interface for peer with the given peer IP. Get interface
160 # JAIL_PATH as root directory for jail.
161
162 virtual_chain_create_peer_if_necessary ${PEER1_NAME}
163 virtual_chain_create_peer_if_necessary ${PEER2_NAME}
164
165 # create an interface for peer with the given peer IP. Get interface
167 # for future use; you will connect this interface to the other
166 # for future use; you will connect this interface to the other
168 # peers' (PEER2) interface.
169 virtual_chain_create_interface_with_ip ${PEER1_NAME} ${PEER1_IP}
170 PEER1_INTERFACE=${RET_INTERFACE}
167 # peers' (PEER2) interface.
168 virtual_chain_create_interface_with_ip ${PEER1_NAME} ${PEER1_IP}
169 PEER1_INTERFACE=${RET_INTERFACE}
171
170
172 # create an interface for peer with the given peer IP. Get interface
171 # create an interface for peer with the given peer IP. Get interface
173 # for future use; you will connect this interface to the other
172 # for future use; you will connect this interface to the other
174 # peers' (PEER2) interface.
175 virtual_chain_create_interface_with_ip ${PEER2_NAME} ${PEER2_IP}
176 PEER2_INTERFACE=${RET_INTERFACE}
177
178 # Connect virtual interface to other interface. Syntax is :
179 # ngctl connect INTERFACE1: INTERFACE2: ether ether.
173 # peers' (PEER2) interface.
174 virtual_chain_create_interface_with_ip ${PEER2_NAME} ${PEER2_IP}
175 PEER2_INTERFACE=${RET_INTERFACE}
176
177 # Connect virtual interface to other interface. Syntax is :
178 # ngctl connect INTERFACE1: INTERFACE2: ether ether.
180
179
181 echo -n "Connecting ${PEER1_INTERFACE}:ether to ${PEER2_INTERFACE}:ether..."
182 ngctl connect ${PEER1_INTERFACE}: ${PEER2_INTERFACE}: ether ether \
183 || exit 1
184 echo "done"
185
186 done
187
188 # Executes static route add commands.
189 i=0
190 while [ $i != $STATIC_ROUTE_CNT ]; do
191 eval ROUTE=\${STATIC_ROUTE${i}}
192 ret=`${ROUTE}`
193 i=`expr $i + 1`
194 done
195
180 echo -n "Connecting ${PEER1_INTERFACE}:ether to ${PEER2_INTERFACE}:ether..."
181 ngctl connect ${PEER1_INTERFACE}: ${PEER2_INTERFACE}: ether ether \
182 || exit 1
183 echo "done"
184
185 done
186
187 # Executes static route add commands.
188 i=0
189 while [ $i != $STATIC_ROUTE_CNT ]; do
190 eval ROUTE=\${STATIC_ROUTE${i}}
191 ret=`${ROUTE}`
192 i=`expr $i + 1`
193 done
194
196 echo "Virtual WAN established succesfully!"
195 echo "Virtual WAN established successfully!"
197}
198
199virtual_chain_create_interface_with_ip() {
200
201 NODE_NAME=$1
202 NODE_IP=$2
203
196}
197
198virtual_chain_create_interface_with_ip() {
199
200 NODE_NAME=$1
201 NODE_IP=$2
202
204 # Create a ng_eiface object for virtual node. ng_eiface
203 # Create a ng_eiface object for virtual node. ng_eiface
205 # object has a hook that can be connected to one of bridge
204 # object has a hook that can be connected to one of bridge
206 # links. After creating interface get its automatically
207 # generated name for further usage.
205 # links. After creating interface get its automatically
206 # generated name for further usage.
208
209 echo "Creating eiface interface for virtual node ${NODE_NAME}."
210 ngctl mkpeer eiface ether ether
211 EIFACE=`ngctl l | grep ngeth | tail -n 1| awk '{print $2}'`
207
208 echo "Creating eiface interface for virtual node ${NODE_NAME}."
209 ngctl mkpeer eiface ether ether
210 EIFACE=`ngctl l | grep ngeth | tail -n 1| awk '{print $2}'`
212 echo "Interface ${EIFACE} is created."
213
211 echo "Interface ${EIFACE} is created."
212
214 # Write name of the interface to temp file. Clean-up procedure
215 # will use this name to shutdown interface.
213 # Write name of the interface to temp file. Clean-up procedure
214 # will use this name to shutdown interface.
216
215
217 echo "interface ${EIFACE}" >> ${TEMP_FILE}
218
216 echo "interface ${EIFACE}" >> ${TEMP_FILE}
217
219 # Move virtual interface to virtual node. Note that Interface
218 # Move virtual interface to virtual node. Note that Interface
220 # name will not be changed at the end of this movement. Moved
221 # interface can be seen at the output of ifconfig command in
222 # jail: 'jexec jailname ifconfig'
223
219 # name will not be changed at the end of this movement. Moved
220 # interface can be seen at the output of ifconfig command in
221 # jail: 'jexec jailname ifconfig'
222
224 echo "Moving ${EIFACE} to ${NODE_NAME}"
223 echo "Moving ${EIFACE} to ${NODE_NAME}"
225 ifconfig ${EIFACE} vnet ${NODE_NAME}
224 ifconfig ${EIFACE} vnet ${NODE_NAME}
226
225
227 # Make lo0 interface localhost.
228 jexec ${NODE_NAME} ifconfig lo0 localhost
229
230 # Generate a random mac address for virtual interface. First
231 # three octets can be changed by user. Last three octets are
226 # Make lo0 interface localhost.
227 jexec ${NODE_NAME} ifconfig lo0 localhost
228
229 # Generate a random mac address for virtual interface. First
230 # three octets can be changed by user. Last three octets are
232 # generated randomly.
231 # generated randomly.
233 M4=`od -An -N2 -i /dev/random | sed -e 's/ //g' | \
234 awk '{ print $1 % 256 }'`
235 M5=`od -An -N2 -i /dev/random | sed -e 's/ //g' | \
236 awk '{ print $1 % 256 }'`
237 M6=`od -An -N2 -i /dev/random | sed -e 's/ //g' | \
238 awk '{ print $1 % 256 }'`
239
240 MAC=`printf ${MAC_PREFIX}:%02x:%02x:%02x ${M4} ${M5} ${M6}`
241
242 # Set the link address (mac address) of virtual interface in
243 # virtual node to randomly generated MAC.
244 echo "Setting MAC address of ${EIFACE} to '${MAC}'"
245 jexec ${NODE_NAME} ifconfig ${EIFACE} link $MAC
246
232 M4=`od -An -N2 -i /dev/random | sed -e 's/ //g' | \
233 awk '{ print $1 % 256 }'`
234 M5=`od -An -N2 -i /dev/random | sed -e 's/ //g' | \
235 awk '{ print $1 % 256 }'`
236 M6=`od -An -N2 -i /dev/random | sed -e 's/ //g' | \
237 awk '{ print $1 % 256 }'`
238
239 MAC=`printf ${MAC_PREFIX}:%02x:%02x:%02x ${M4} ${M5} ${M6}`
240
241 # Set the link address (mac address) of virtual interface in
242 # virtual node to randomly generated MAC.
243 echo "Setting MAC address of ${EIFACE} to '${MAC}'"
244 jexec ${NODE_NAME} ifconfig ${EIFACE} link $MAC
245
247 # Either IPv4 or IPv6 can be used in this script. Ifconfig
246 # Either IPv4 or IPv6 can be used in this script. Ifconfig
248 # IP setting syntax differs slightly for two IP versions.
249 # For version 4 'inet' keyword is used whereas for version 6
250 # 'inet6' is used. Below line tries to decide which IP version
247 # IP setting syntax differs slightly for two IP versions.
248 # For version 4 'inet' keyword is used whereas for version 6
249 # 'inet6' is used. Below line tries to decide which IP version
251 # is given and sets IPVER to 'inet' or 'inet6'.
250 # is given and sets IPVER to 'inet' or 'inet6'.
252
253 IPVER=`echo ${NODE_IP} | awk -F"." '{ split($4,last,"/"); \
254 if( NF==4 && $1>0 && $1<256 && $2<256 && $3<256 && \
255 last[1]<256) print "inet"; else print "inet6"}'`
251
252 IPVER=`echo ${NODE_IP} | awk -F"." '{ split($4,last,"/"); \
253 if( NF==4 && $1>0 && $1<256 && $2<256 && $3<256 && \
254 last[1]<256) print "inet"; else print "inet6"}'`
256
255
257 # Set IP address of virtual interface in virtual node.
258 echo "Setting IP address of ${EIFACE} to '${NODE_IP}'"
259 jexec ${NODE_NAME} ifconfig ${EIFACE} ${IPVER} ${NODE_IP}
260
261 RET_INTERFACE=${EIFACE}
262}
263
264virtual_chain_create_peer_if_necessary() {
265
266 if ! grep -q $1 ${TEMP_FILE} ; then
256 # Set IP address of virtual interface in virtual node.
257 echo "Setting IP address of ${EIFACE} to '${NODE_IP}'"
258 jexec ${NODE_NAME} ifconfig ${EIFACE} ${IPVER} ${NODE_IP}
259
260 RET_INTERFACE=${EIFACE}
261}
262
263virtual_chain_create_peer_if_necessary() {
264
265 if ! grep -q $1 ${TEMP_FILE} ; then
267
268 echo -n "Creating virtual node (jail) ${1}..."
266
267 echo -n "Creating virtual node (jail) ${1}..."
269 jail -c vnet name=${1} host.hostname=${1} \
268 jail -c vnet name=${1} host.hostname=${1} \
270 path=${JAIL_PATH} persist
269 path=${JAIL_PATH} persist
271 jexec ${1} sysctl -w net.inet.ip.forwarding=1
272 jexec ${1} sysctl -w net.inet6.ip6.forwarding=1
273 echo "done"
270 jexec ${1} sysctl -w net.inet.ip.forwarding=1
271 jexec ${1} sysctl -w net.inet6.ip6.forwarding=1
272 echo "done"
274
275 # Write name of the jail to temp file. Clean-up
273
274 # Write name of the jail to temp file. Clean-up
276 # procedure will use this name to remove jail.
275 # procedure will use this name to remove jail.
277
276
278 echo "node ${1}" >> ${TEMP_FILE}
279 fi
280
281}
282
277 echo "node ${1}" >> ${TEMP_FILE}
278 fi
279
280}
281
283
284# Stop routine.
285virtual_chain_stop() {
286
287 if [ ! -e ${TEMP_FILE} ]; then
288 echo "Nothing to stop! ${TEMP_FILE}: temp file not found"
289 else
290
282# Stop routine.
283virtual_chain_stop() {
284
285 if [ ! -e ${TEMP_FILE} ]; then
286 echo "Nothing to stop! ${TEMP_FILE}: temp file not found"
287 else
288
291 echo -n "Shutdown bridge interface.."
289 echo -n "Shutdown bridge interface.."
292 OBJECTS=`cat ${TEMP_FILE} | grep bridge | awk '{print $2}'`
293 for BRIDGE in ${OBJECTS}; do
294 ngctl shutdown ${BRIDGE}: >/dev/null 2>&1
295 done
296 echo "done"
290 OBJECTS=`cat ${TEMP_FILE} | grep bridge | awk '{print $2}'`
291 for BRIDGE in ${OBJECTS}; do
292 ngctl shutdown ${BRIDGE}: >/dev/null 2>&1
293 done
294 echo "done"
297
298 echo -n "Shutdown all eiface interfaces..."
295
296 echo -n "Shutdown all eiface interfaces..."
299 OBJECTS=`cat ${TEMP_FILE} | grep interface | awk '{print $2}'`
300 for INTERFACE in ${OBJECTS}; do
301 ngctl shutdown ${INTERFACE}: >/dev/null 2>&1
302 done
303 echo "done"
297 OBJECTS=`cat ${TEMP_FILE} | grep interface | awk '{print $2}'`
298 for INTERFACE in ${OBJECTS}; do
299 ngctl shutdown ${INTERFACE}: >/dev/null 2>&1
300 done
301 echo "done"
304
305 echo -n "Removing all jails..."
302
303 echo -n "Removing all jails..."
306 OBJECTS=`cat ${TEMP_FILE} | grep node | awk '{print $2}'`
307 for NODE in ${OBJECTS}; do
308 jail -r ${NODE}
309 done
310 echo "done"
304 OBJECTS=`cat ${TEMP_FILE} | grep node | awk '{print $2}'`
305 for NODE in ${OBJECTS}; do
306 jail -r ${NODE}
307 done
308 echo "done"
311
312 echo "Removing tempfile ${TEMP_FILE}"
309
310 echo "Removing tempfile ${TEMP_FILE}"
313 rm ${TEMP_FILE}
314 fi
311 rm ${TEMP_FILE}
312 fi
315 echo "Virtual LAN objects removed succesfully!"
313 echo "Virtual LAN objects removed successfully!"
316
317}
318
319virtual_chain_usage() {
320 echo "usage: $0 start [target_topology]"
321 echo " : $0 [ stop | help ]"
322}
323
324
325# Main entry point.
326
314
315}
316
317virtual_chain_usage() {
318 echo "usage: $0 start [target_topology]"
319 echo " : $0 [ stop | help ]"
320}
321
322
323# Main entry point.
324
327
328case $# in
329 1)
330 case $1 in
331 start)
332 echo -n "Creating default target topology:"
333 echo " ${TARGET_TOPOLOGY}"
334 virtual_chain_start
335 ;;
336 stop)
337
338 if [ ! -e ${TEMP_FILE} ]; then
339 echo -n "Noting to stop! ${TEMP_FILE}:"
340 echo " temp file not found"
341 else
342 virtual_chain_stop
325case $# in
326 1)
327 case $1 in
328 start)
329 echo -n "Creating default target topology:"
330 echo " ${TARGET_TOPOLOGY}"
331 virtual_chain_start
332 ;;
333 stop)
334
335 if [ ! -e ${TEMP_FILE} ]; then
336 echo -n "Noting to stop! ${TEMP_FILE}:"
337 echo " temp file not found"
338 else
339 virtual_chain_stop
343 fi
340 fi
344 ;;
345 help)
346 virtual_chain_usage
347 exit 1
348 ;;
349 *)
350 virtual_chain_usage
351 exit 1

--- 22 unchanged lines hidden --- 		341 ;;
342 help)
343 virtual_chain_usage
344 exit 1
345 ;;
346 *)
347 virtual_chain_usage
348 exit 1

--- 22 unchanged lines hidden ---