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rdengrdeng
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simple router
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‎.DS_Store

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‎INSTRUCTIONS

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This document describes the environment for the Mininet sr assignment. You will
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login to a virtual topology like this one:
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Application Server 1
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+====================+
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| |
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| 192.168.2.2 |
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| |
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+====================+
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/
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/
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/
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eth3: /
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10.0.1.1 / eth1: 192.168.2.1
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+============(eth1)==+
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| |
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Internet =============(eth3) Your Router |
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| |
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+============(eth2)==+
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\ eth2: 172.64.3.1
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\
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\
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\
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+====================+
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| |
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| 172.64.3.10 |
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| |
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+====================+
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Application Server 2
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To connect to a topology, first compile the stub code.
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Then, you can invoke sr as follows:
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$ ./sr
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By default, ./sr will connect to the mininet controller on localhost.
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If you would like to run "sr" remotely, invoke sr as follows:
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$ ./sr -s <controller_ip>
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Your output upon connecting should look like this:
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Using VNS sr stub code revised 2009-10-14 (rev 0.20)
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Loading filters
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---------------------------------------------
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no filters specified. accepting all connections.
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---------------------------------------------
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Client ubuntu connecting to Server localhost:8888
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Requesting topology 0
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successfully authenticated as ubuntu
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Connected to new instantiation of topology 0
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Loading routing table
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---------------------------------------------
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Destination Gateway Mask Iface
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192.168.2.2 192.168.2.2 255.255.255.255 eth1
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172.64.3.10 172.64.3.10 255.255.255.255 eth2
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10.0.1.100 10.0.1.100 255.255.255.255 eth3
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---------------------------------------------
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Router interfaces:
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eth3 HWaddrc2:e3:78:bf:71:f9
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inet addr 10.0.1.1
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eth2 HWaddr26:e4:1f:26:49:ab
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inet addr 172.64.3.1
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eth1 HWaddr56:01:ec:fb:34:09
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inet addr 192.168.2.1
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<-- Ready to process packets -->
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IMPORTANT: The system has more users than IP addresses, so you are not assigned
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a particular set of static IP addresses. This means each time you connect you
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MAY receive a different set of IP addresses. However, the system remembers the
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last IP block assigned to you and will always re-assign it to you unless someone
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else is currently using it (in which case you will get a new set of IP
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addresses). Your routing table (stored in rtable.vrhost) will be automatically
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updated by the stub code.
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Please verify that you can see packets arriving to your topology when you try
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and ping one of your router interfaces. To do this, connect to your topology as
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described above and try and ping eth0 (e.g., 171.67.238.32 in this example).
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$ ping 171.64.3.10
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You should see output from sr that looks like:
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*** -> Received packet of length 42
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*** -> Received packet of length 42
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*** -> Received packet of length 42
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If so, everything is working! If not, please post your question on piazza.
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Good Luck!

‎Makefile

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#------------------------------------------------------------------------------
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# File: Makefile
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#
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# Note: This Makefile requires GNU make.
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#
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# (c) 2001,2000 Stanford University
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#
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#------------------------------------------------------------------------------
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all : sr
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CC = gcc
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OSTYPE = $(shell uname)
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ifeq ($(OSTYPE),CYGWIN_NT-5.1)
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ARCH = -D_CYGWIN_
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endif
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ifeq ($(OSTYPE),Linux)
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ARCH = -D_LINUX_
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SOCK = -lnsl -lresolv
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endif
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ifeq ($(OSTYPE),SunOS)
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ARCH = -D_SOLARIS_
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SOCK = -lnsl -lsocket -lresolv
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endif
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ifeq ($(OSTYPE),Darwin)
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ARCH = -D_DARWIN_
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SOCK = -lresolv
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endif
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CFLAGS = -g -Wall -ansi -D_DEBUG_ -D_GNU_SOURCE $(ARCH)
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LIBS= $(SOCK) -lm -lpthread
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PFLAGS= -follow-child-processes=yes -cache-dir=/tmp/${USER}
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PURIFY= purify ${PFLAGS}
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# Add any header files you've added here
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sr_HDRS = sr_arpcache.h sr_utils.h sr_dumper.h sr_if.h sr_protocol.h sr_router.h sr_rt.h \
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vnscommand.h sha1.h
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# Add any source files you've added here
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sr_SRCS = sr_router.c sr_main.c sr_if.c sr_rt.c sr_vns_comm.c sr_utils.c sr_dumper.c \
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sr_arpcache.c sha1.c
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sr_OBJS = $(patsubst %.c,%.o,$(sr_SRCS))
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sr_DEPS = $(patsubst %.c,.%.d,$(sr_SRCS))
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$(sr_OBJS) : %.o : %.c
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$(CC) -c $(CFLAGS) $< -o $@
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$(sr_DEPS) : .%.d : %.c
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$(CC) -MM $(CFLAGS) $< > $@
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-include $(sr_DEPS)
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sr : $(sr_OBJS)
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$(CC) $(CFLAGS) -o sr $(sr_OBJS) $(LIBS)
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sr.purify : $(sr_OBJS)
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$(PURIFY) $(CC) $(CFLAGS) -o sr.purify $(sr_OBJS) $(LIBS)
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.PHONY : clean clean-deps dist
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clean:
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rm -f *.o *~ core sr *.dump *.tar tags
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clean-deps:
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rm -f .*.d
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dist-clean: clean clean-deps
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rm -f .*.swp sr_stub.tar.gz
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dist: dist-clean
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(cd ..; tar -X stub/exclude -cvf sr_stub.tar stub/; gzip sr_stub.tar); \
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mv ../sr_stub.tar.gz .
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tags:
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ctags *.c
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submit:
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@tar -czf router-submit.tar.gz $(sr_SRCS) $(sr_HDRS) README Makefile
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‎auth_key

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ophCMr/+(4Plq&pdfSUP@kf*uAUPNCf;/Z}ID[VgBW!7hN3sYf<dHBewu,6C;<}0

‎logname.pcap

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‎rtable

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192.168.2.2 192.168.2.2 255.255.255.255 eth1
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172.64.3.10 172.64.3.10 255.255.255.255 eth2
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10.0.1.100 10.0.1.100 255.255.255.255 eth3

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