Query related to a stp and vlan case
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Posted by Walter Roberson on July 5, 2008, 6:03 pm
Please log in for more thread options I gather that you are referring to some kind of app to app level encryption? I'm not -aware- of any switch / router that does encryption at the point where an untagged VLAN enters the network, and decryption at the point where the untagged VLAN exits the network (possibly a number of hops away), all transparently to the hosts. Or rather, to the extent that I have heard of such things, I would probably call them Virtual Private Networks (VPNs) rather than encrypted VLANs -- especially as VPNs can carry VLAN-tagged packets within them. | |||||||||||||||||||||||||||||||
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Posted by Robert Redelmeier on July 6, 2008, 2:15 am
Please log in for more thread options >>VLANs share physical media with other traffic but the packets
>>are at least tagged (often by port number) and usually >>encrypted to prevent traffic mixing on a logical level. >
> I gather that you are referring to some kind of app to app level > encryption? I'm not -aware- of any switch / router that does > encryption at the point where an untagged VLAN enters the network, > and decryption at the point where the untagged VLAN exits the > network (possibly a number of hops away), all transparently to > the hosts. Or rather, to the extent that I have heard of such > things, I would probably call them Virtual Private Networks > (VPNs) rather than encrypted VLANs -- especially as VPNs can > carry VLAN-tagged packets within them. Correct. I was not referring to 802.1Q tagging (layer 2) but rather more to plain vanilla IP (layer 3) which is probably best described as VPN. -- Robert | |||||||||||||||||||||||||||||||
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Posted by vicky on July 5, 2008, 11:27 pm
Please log in for more thread options wrote:
> In article
> > > > What u say about =A0inter-vlan communication =A0 is it possible ..... i=
f
> > yes plz tell how ????
>
lting
> A VLAN is a *virtual LAN*, i.e., distinct VLANs appear to be physically > separate Local Area Networks. As with all separate networks, > communication among them can be effected by using a router. > > -- > Rich Seifert =A0 =A0 =A0 =A0 =A0 =A0 =A0Networks and Communications Consu= > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 21885 Bear Creek Way
> (408) 395-5700 =A0 =A0 =A0 =A0 =A0 =A0Los Gatos, CA 95033 > (408) 228-0803 FAX > > Send replies to: usenet at richseifert dot com -------------------- And is inter- port based vlan communication is possible in l 2 switch or for this the switch controller register support is required Thanks Vikrant | |||||||||||||||||||||||||||||||
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Posted by Rich Seifert on July 6, 2008, 12:39 pm
Please log in for more thread options In article
> wrote:
> > In article
> > > > > > > What u say about inter-vlan communication is it possible ..... if
> > > yes plz tell how ???? > >
> > A VLAN is a *virtual LAN*, i.e., distinct VLANs appear to be physically > > separate Local Area Networks. As with all separate networks, > > communication among them can be effected by using a router. > > >
> And is inter- port based vlan communication is possible in l 2 switch > or for this the switch controller register support is required > Please read my original response. Communications among VLANs (indeed, among *any* LANs) can be accomplished using a router. I am sorry if you do not understand this, or if this is not the answer you want. I have no idea what a "switch controller register" *is*, much less whether it may be required for inter-port based VLAN communication. -- Rich Seifert Networks and Communications Consulting 21885 Bear Creek Way (408) 395-5700 Los Gatos, CA 95033 (408) 228-0803 FAX Send replies to: usenet at richseifert dot com | |||||||||||||||||||||||||||||||
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Posted by vicky on July 7, 2008, 2:24 am
Please log in for more thread options wrote:
> In article
> > > > > > > wrote:
> > > In article
>
> > > > > What u say about =A0inter-vlan communication =A0 is it possible ...=
.. if
> > > > yes plz tell how ????
>
> > > A VLAN is a *virtual LAN*, i.e., distinct VLANs appear to be physical=
ly
> > > separate Local Area Networks. As with all separate networks,
> > > communication among them can be effected by using a router. >
> > And is inter- port based vlan communication is possible in l 2 switch
> > or for this the switch controller register support is required >
lting
> Please read my original response. Communications among VLANs (indeed, > among *any* LANs) can be accomplished using a router. I am sorry if you > do not understand this, or if this is not the answer you want. > > I have no idea what a "switch controller register" *is*, much less > whether it may be required for inter-port based VLAN communication. > > -- > Rich Seifert =A0 =A0 =A0 =A0 =A0 =A0 =A0Networks and Communications Consu= > =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 =A0 21885 Bear Creek Way
> (408) 395-5700 =A0 =A0 =A0 =A0 =A0 =A0Los Gatos, CA 95033 > (408) 228-0803 FAX > > Send replies to: usenet at richseifert dot com- Hide quoted text - > > - Show quoted text - ----------------------------------------------------- Hello Sir I ve a query related to inter-vlan(port based) communication so first please read my query which in my share web file named as stp and vlan case.txt the link for my share web file is -- http://vikrantpandey.diinoweb.com/files/ please read it and then please reply. Thanks Vikrant | |||||||||||||||||||||||||||||||
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>are at least tagged (often by port number) and usually
>encrypted to prevent traffic mixing on a logical level.