ere are the updated instructions for zebra to work:

1. First update your copy of VM.
Remove /vm/$USER dir and then copy the cs-tech updated VM(with zebra + other
missing programs) to /vm/$USER...this can be done by running the cs4396.sh
script in /vmsource

2. Log into the updated VM as usual by running % vmware and choosing the
cs4396.vmx file under /vm/$USER

3. % export PATH=/etc/init.d:$PATH

then you should be able to do

[root@PC2 ~]# zebra.init start
Starting zebra:                                            [  OK  ]
[root@PC2 ~]# ripd.init start
Starting ripd:                                             [  OK  ]
[root@PC2 ~]# ripd.init status
ripd (pid 8296 8135) is running...
[root@PC2 ~]# zebra.init status
zebra (pid 8272) is running...
[root@PC2 ~]# telnet localhost 2602

Trying 127.0.0.1...
Connected to localhost.localdomain (127.0.0.1).


Hello, this is zebra (version 0.95a).
Copyright 1996-2004 Kunihiro Ishiguro.

User Access Verification

Password: zebra

ripd>

PS. This memo is released on February 27, 2009 (Spring 2009) semester where we
updated our VM images. The book discusses the use of zebra. The only difference
after this memo is that, you do not call the program as "zebra" on the command
line but call it as "zebra.init". The rest should be similar to what the lab
manual describes.