Switch Test Presentation

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Switch Test Presentation

• The Outline
• The concept of ping
• TCP/IP protocol
• ICMP
• Ethereal
• RFC standard for benchmark

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The concept of Ping tool
A ping B
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TCP/IP Structure
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TCP/IP Model
Application HTTP?FTP?TELNET?SNMP?NFS
TCP TCP?UDP
IP IP?ICMP?ARP?RARP
Physical Layer Ethernet?FDDI?Token Ring. Physical Layer Ethernet?FDDI?Token Ring.
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TCP/IP VS. OSI
Application Application ? IE
Application Presentation ? HTML
Application Session ? HTTP
TCP Transport ? Port Number
IP Network ? IP Address
Physical Layer Data Link ? MAC
Physical Layer Physical ? RJ-45
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TCP/IP Stack
IE
HTML
HTTP
2190
192.1.1.1
00-11-BB-22-11-DD
RJ45
Apache/IIS
HTML
HTTP
80
211.2.1.1
AA-2C-DD-15-F3-VV
Fiber
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ICMP Code
All
8
16
32
0
Type Code Checksum
Identifier Identifier Sequence Number
OPTIONAL DATA... OPTIONAL DATA... OPTIONAL DATA...
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ICMP Code
TYPE 3 0 network unreachable router ?
router 1 host unreachable router ? DNS 2
protocol unreachable host ? Service 3 port
unreachable host ? Port Num 4 fragmentation
needed but impossible router because of
'don't fragment' command ? MTU 5 source route
not reachable router ? routing
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ICMP Code
TYPE 8 - Echo Request sent by 0 (no special
meaning) host, router TYPE 0 - Echo Reply
sent by 0 (no special meaning) host, router
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Structure of test environment
(Packet size 65500 in windows and 65507 in
Linux)
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Sender information
BACK
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(No Transcript)
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(No Transcript)
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• Receive packet rule in
• non-promiscuous mode
• Broadcast
• Personal IP

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Structure of test environment
Simple equation ( ( input_count - output_count )
100 ) / input_count A????10000??? (ICMP
TYPE8) B????9500??? (ICMP TYPE0) Frame loss??
10000 9500 500 1 - 500/10000 95 Frame
loss????90??????? ???
RFC2544 page16 -- 26.3
RFC2889 page3 -- 5.1.2
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Reference

• RFC2544
• RFC2889
• RFC1242