Veryx ATTEST TM. Sample Test cases Overview. Conformance Test Suite. Internet Protocol version 4 (IPv4) Part Number: T / TCLS IPv /1.

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1 Veryx ATTEST TM Conformance Test Suite Internet Protocol version 4 (IPv4) Sample Test cases Overview Part Number: T / TCLS IPv /1.0

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3 Introduction The Veryx ATTEST TM IPv4 Conformance test suite is designed to enable quick and efficient testing of Internet Protocol version 4 (IPv4) as defined by IETF Standards (RFCs 791, 792, 950, 1122, 1812). Veryx ATTEST TM IPv4 has 120 test cases that comprehensively tests routers for IPv4 conformance. These test cases are organized into the following Test Groups: S. No Group Cases Sample Cases 1. Header Validation Group (HVG) IP Forwarding Group (IPG) 4-3. Datagram Fragmentation Group (DFG) Packet Reassembly Group (PRG) IP Addressing Group (IAG) ICMP Handling Group (IHG) 40 5 Total Copyright Veryx Technologies. Page 1

4 The following is a listing of the IPv4 sample test cases. List of sample test cases S. No Title Purpose References ID Conformance Type 1. IP datagram with Internet Header Length less than the minimum Internet Header Length 2. IP datagram with MF=1 and DF=1 3. IP datagram forwarding with zero Fragment Offset, DF=1 and MF=0 4. IP datagram discarding with TTL=0. 5. IP datagram forwarded with decremented TTL value. 6. IP datagram with incorrect Checksum value an Internet datagram received with Internet Header Length less than the minimum Internet Header Length (20 bytes). an Internet datagram received with More Fragments flag (MF) set to 1 and Don't Fragment flag (DF) set to 1. To verify that the IPv4 system forwards an Internet datagram received with zero Fragment Offset value, Don't Fragment flag (DF) set to 1 and More Fragments flag (MF) set to 0, when the MTU size of the next network is larger than the Internet datagram size. an Internet datagram received with TTL set to 0 when the datagram has to be forwarded. To verify that the IPv4 system decrements the TTL value by at least 1 during Internet Header processing. an Internet datagram received with incorrect Header Checksum value. RFC (1) (Page 67) HVG_003 MUST RFC (Page 25) HVG_005 MUST RFC (Page 13) HVG_008 MUST RFC (Page 2) RFC (Page46) HVG_011 MUST RFC (Page 14) HVG_015 MUST RFC (Page 3) RFC (Page 44) HVG_016 MUST Copyright Veryx Technologies. Page 2

5 S. No Title Purpose References ID Conformance Type 7. IP datagram with End of Option List IP option 8. IP datagram registering its own address 9. IP datagram inserting nonstandard time when flag=0 10. IP datagram with Timestamp option, flag=1 and exceeding overflow 11. IP last fragment with MF not set 12. IP datagram with least possible number of IP fragments To verify that the IPv4 system recognizes and forwards an Internet datagram when the received datagram contains the End of Option List IP option as part of the Options header. receiving an Internet datagram with the Record Route option, registers its own Internet address in the datagram and increments the Option Pointer value by four. receiving an Internet datagram with the Timestamp option and Flag value set to 0, inserts any time as Timestamp and sets the high order bit of the Timestamp field to 1 (to indicate the use of nonstandard value) if it cannot provide the Timestamp with respect to midnight UT. an Internet datagram received with the Timestamp option, Flag value set to 1 and an exceeding Overflow count. fragmenting an Internet datagram, sets the More Fragments flag (MF) in all the fragments except the last fragment. fragmenting an Internet datagram, generates the least possible number of IP fragments when the Total Length of the Internet datagram is greater than the MTU size of the next network through which the datagram has to be transmitted. RFC (Page44) HVG_019 MUST RFC (Page 21) HVG_029 MUST RFC (Page 22) HVG_033 MUST RFC (Page 23) HVG_044 MUST RFC (Page 24) DFG_004 MUST RFC (Page 45) DFG_007 SHOULD Copyright Veryx Technologies. Page 3

6 S. No Title Purpose References ID Conformance Type 13. IP fragments with different ID fields 14. IP all fragments with nonzero offset value 15. IP datagram with Destination Address as {network-prefix, 0} 16. Initialize TTL in ICMP response 17. IP datagram with invalid Total Length -x-> ICMP error message 18. IP datagram with Dest as Broadcast/Multicast -x-> ICMP error message 19. ICMP Echo Request with Src Route option --> ICMP Echo Reply with Src Route option To verify that the IPv4 system does not reassemble the fragmented IPv4 packets when one of the fragments has a different Identification value compared to the other fragments. To verify that the IPv4 system does not reassemble the fragmented Internet datagram when all the fragments are received with non-zero Fragment Offset values. receiving an Internet datagram with the Destination Address as {network-prefix, 0}, discards the datagram. To verify that the IPv4 system initializes TTL while originating ICMP responses and does not copy the TTL from the packet that triggered the response. To verify that the IPv4 system does not generate an ICMP error message on receiving an Internet datagram with invalid Total Length. To verify that the IPv4 system does not generate an ICMP error message on receiving an Internet datagram destined to IP broadcast address or IP multicast address. receiving an ICMP Echo Request message with Source Route option in the IP header, reverses the return route and uses the Source Route option in the ICMP Echo Reply message. RFC (Page 29) PRG_002 MUST RFC (Page 27) PRG_010 MUST RFC (2) (Page 50) IAG_008 SHOULD RFC (Page 53) IHG_001 MUST RFC (Page 55) IHG_005 MUST RFC (Page 55) IHG_007 MUST RFC (Page 59) IHG_033 MUST Copyright Veryx Technologies. Page 4

7 S. No Title Purpose References ID Conformance Type 20. ICMP Timestamp with Timestamp option and flag=1 --> ICMP Timestamp with Timestamp option receiving an ICMP Timestamp message with Timestamp option and Flag value set to 1 in the IP header, replies with the current router Timestamp and address recorded in the IP header of the ICMP Timestamp Reply message. RFC (Page 60) IHG_037 MAY Copyright Veryx Technologies. Page 5

8 About Veryx Technologies Veryx Technologies (formerly Net-O 2 Technologies) provides innovative Verification and Measurement Solutions for the global communications industry. ATTEST solutions verify networking equipment being used for Access, Carrier Ethernet, Data Center, Edge, Enterprise, Industrial and Security. The unique offerings from Veryx enable customers to reduce the time-required-to-test and enhance their time-to-market. Veryx ATTEST TM is the trademark of Veryx Technologies. All other trademarks of respective owners are acknowledged. E mail: info@veryxtech.com Web: Copyright Veryx Technologies. Page 6