December 2005
Intermediate to advanced
1066 pages
33h 38m
English
Content preview from Understanding Linux Network Internals
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When Solicitation Requests Are Transmitted and Processed
In this section, we will see when a solicitation request is processed, based on the configuration of the receiving host and the physical topology of the network. Figure 26-9 covers the factors that lead a host to send out a solicitation request, and Figure 26-10 shows the most-common factors that determine whether a request is processed by the Linux host that receives it. To show the potential complexity of the recipient's decision, Figure 26-10 assumes that the recipient implements both proxying and bridging[*]; removing either of these features would simplify the flowchart. Figure 26-10 also assumes device-based proxying; destination-based proxying is similar, but leaves out a step. Note that Figure 26-10 shows both the case of a proxy server and the case of a common host that does not implement any proxying: "proxy enabled" denotes a proxy server, and "proxy disabled" denotes a common host.
Figure 26-9. Transmitting solicitation requests
This is a protocol-independent analysis; particulars about ARP are shown in Chapter 28.
Figure 26-10. Processing ingress solicitation requests
When bridging is enabled, solicitation requests are not processed by the receiving host, but are instead forwarded (bridged) to the right interfaces according ...
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