4
votes
Accepted
What is PPP and why does it not have a MAC address?
PPP is a data link layer protocol that's designed to run on top of a simple serial link as physical layer. Since there are exactly two nodes on that point-to-point link, no addressing is required.
The ...
- 78.3k
3
votes
What ways are there to make sure router multicast tables are up to date?
Keep in mind, there are three (3) versions of IGMP. While v2 introduced an explicit leave type, there's no "join". To be part of any group a host includes that group in a membership report. ...
- 30.8k
3
votes
Accepted
What ways are there to make sure router multicast tables are up to date?
A router configured to forward multicast to clients/receivers in attached subnets (by listening for and acting upon their IGMP messages) is usually also the designated IGMP Querier for the given ...
- 8,122
3
votes
Accepted
Are there any methods of differentiate between a single computer and a NAT router?
IPv4 (OSI network layer) addresses have no distinguishing attributes that would differentiate them between single devices and NAT Devices
Assumptions (summarized from OP): Conclusions
No network ...
- 7,094
3
votes
In router's config, why do I need to advertise the directly connected network?
I think you misunderstand the OSPF and EIGRP network statement. The network statement does not advertise a network, it tells the routing protocol which interface(s) to include in the routing protocol ...
- 97.2k
1
vote
In router's config, why do I need to advertise the directly connected network?
I don't understand, how can I have an interface which I don't connect?
Interfaces that are connected to hosts (PCs) don't have any routers connected and therefore don't need to send hellos. Also, in ...
- 65.2k
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