Lab4-3.net file for Dynamips:
##################################################
#
# CCNP Version 5.0: Optimizing Converged Cisco Networks
# Lab 4.3 TCP Header Compression
# By Happy Peter http://blog.xuite.net/juilin77/happy
#
##################################################
autostart=false
[localhost:7200]
workingdir = /opt/dynamips/dynagen-0.11.0/UTS/CCNP4/lab4-3/workingconfig/
[[3725]]
# Specify 3725 IOS image on Linux here:
image = /opt/dynamips/images/c3725-ad.bin
ram = 256
idlepc = 0x60bf8d58
mmap = true
ghostios = true
confreg = 0x2102
###########################
#
# Define router instances 1
#
###########################
[[Router R1]]
model = 3725
console = 2001
slot1 = NM-4T
s1/0 = R2 s1/0
[[Router R2]]
model = 3725
console = 2002
slot1 = NM-4T
Learning Objectives
‧ Configure TCP header compression
‧ Verify TCP header compression
Step 1: Configure Addressing
R1(config)#interface serial 1/0
R1(config-if)#ip address 172.16.12.1 255.255.255.0
R1(config-if)#clock rate 64000
R1(config-if)#no shutdown
R2(config)#interface serial 1/0
R2(config-if)#ip address 172.16.12.2 255.255.255.0
R2(config-if)#no shutdown
Step 2: Enable Telnet Access on R2
R2(config)#enable secret cisco
R2(config)#line vty 0 4
R2(config-line)#logging synchronous
R2(config-line)#password cisco
Step 3: Enable TCP Header Compression
R1(config)#interface serial 1/0
R1(config-if)#ip tcp header-compression
R2(config)#interface serial 1/0
R2(config-if)#ip tcp header-compression
Step 4: Verify TCP Header Compression
R1#show ip tcp header-compression
TCP/IP header compression statistics:
Interface Serial1/0 (compression on, VJ)
Rcvd: 0 total, 0 compressed, 0 errors, 0 status msgs
0 dropped, 0 buffer copies, 0 buffer failures
Sent: 0 total, 0 compressed, 0 status msgs, 0 not predicted
0 bytes saved, 0 bytes sent
Connect: 16 rx slots, 16 tx slots,
0 misses, 0 collisions, 0 negative cache hits, 16 free contexts
R1#
Generate some TCP traffic by connecting from R1 to R2 via Telnet.
R1#telnet 172.16.12.2
Trying 172.16.12.2 ... Open
User Access Verification
Password: cisco
R2>enable
Password: cisco
R2#exit
[Connection to 172.16.12.2 closed by foreign host]
R1#
Verify that the TCP traffic was compressed.
R1#show ip tcp header-compression
TCP/IP header compression statistics:
Interface Serial1/0 (compression on, VJ)
Rcvd: 24 total, 23 compressed, 0 errors, 0 status msgs
0 dropped, 0 buffer copies, 0 buffer failures
Sent: 35 total, 34 compressed, 0 status msgs, 0 not predicted
1199 bytes saved, 249 bytes sent
5.81 efficiency improvement factor
Connect: 16 rx slots, 16 tx slots,
1 misses, 0 collisions, 0 negative cache hits, 16 free contexts
97% hit ratio, five minute miss rate 0 misses/sec, 0 max
R1#
R2#show ip tcp header-compression
TCP/IP header compression statistics:
Interface Serial1/0 (compression on, VJ)
Rcvd: 35 total, 34 compressed, 0 errors, 0 status msgs
0 dropped, 0 buffer copies, 0 buffer failures
Sent: 24 total, 23 compressed, 0 status msgs, 0 not predicted
769 bytes saved, 293 bytes sent
3.62 efficiency improvement factor
Connect: 16 rx slots, 16 tx slots,
1 misses, 0 collisions, 0 negative cache hits, 16 free contexts
95% hit ratio, five minute miss rate 0 misses/sec, 0 max
R2#
Final Configurations:
R1:
hostname R1
!
interface Serial1/0
ip address 172.16.12.1 255.255.255.0
ip tcp header-compression
clock rate 64000
no shutdown
!
end
R2:
hostname R2
!
enable secret 5 $1$wG0y$Hr2fnzW6vgTBb2JaqgYJ5.
!
interface Serial1/0
ip address 172.16.12.2 255.255.255.0
ip tcp header-compression
no shutdown
!
line vty 0 4
password cisco
logging synchronous
login
!
end
Reference:
Cisco Networking Academy
http://www.cisco.com/web/learning/netacad/index.html
CCNP Version 5.0: Optimizing Converged Cisco Networks
Student Lab Manual
最初發表 / 最後更新: 2009.04.11 / 2018.06.14
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