Record route ip option, Computer Networking

Assignment Help:

The address recorded by a router should be its outgoing interface. That is, if a router forwards a datagram that has the record route option enabled, and if the datagram arrives at the router via an interface with IP address X and leaves via an interface with IP address Y, Y should be recorded.

The format of the option is the following:

1. The ?rst byte of the option will have binary value 0000 0111. The ?rst bit indicates that the option should be copied into ONLY the ?rst fragment and NOT into any fragments after the ?rst. The next 2 bits indicate that this option is in "class 0" (i.e., a "control" option). The last 5 bits indicate that this is option 7 within class 0 (i.e., record route).

2. The second byte indicates the total number of bytes allocated in the option portion of the IP header.

3. The third byte is a "pointer." Its value indicates the next byte within the allotted space at which the next router IP address can begin. The pointer value is relative to the beginning of the option, which is considered to be byte 0. The initial value of this pointer must be 4.

4. All others bytes have value 0 until they are overwritten.


Related Discussions:- Record route ip option

Time out - transport layer, Time  out Timers  are used to protect  aga...

Time  out Timers  are used to protect  against  lost packet. Each  packet  must have its own logical  timers since  only  a single  packet  will be retransmitted  after timeou

Challenge handshake authentication protocols (chap), Challenge Handshake Au...

Challenge Handshake Authentication Protocols (CHAP) CHAP as its an implies implements  a form of authentication that  requires a challenge  and a response. A CHAP authenticator

What are netbios and netbeui, What are NETBIOS and NETBEUI? NETBIOS is ...

What are NETBIOS and NETBEUI? NETBIOS is a programming interface that permits I/O requests to be sent to and received from a remote computer and it hides the networking hardwar

What does a metric of 16 hops showwhen using RIP , Destination unreachable ...

Destination unreachable Normal 0 false false false EN-IN X-NONE X-NONE MicrosoftInternetExplorer4

Repeaters, REPEATERS:  Repeaters are needed when copper wire communica...

REPEATERS:  Repeaters are needed when copper wire communication is takes place. According to the fact that electrical signal goes weaker while travelling over copper lines. A

Authoritative dns servers application layer, Authoritative DNS Servers ...

Authoritative DNS Servers Every  organization with publicly  accessible hosts  ( such  as web  server and mail  several  on the  internet  must  provide  publicly accessible D

IP address, what is variable ip address

what is variable ip address

Determine the uses of firewalls, Determine the uses of firewalls The fi...

Determine the uses of firewalls The firewalls available today do all the things, viz., like filter the data packets, provide proxy services and do stateful inspection of packet

Applications of fiber optics, Applications of Fiber Optics - Backbone ...

Applications of Fiber Optics - Backbone networks because of wide bandwidth and cost effectiveness - Cable TV - LANS - 100Base-FX (Fast Ethernet)

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd