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TOPIC: VLAN Related Querry ?

VLAN Related Querry ? 10 years 5 months ago #15263

  • ashish_hcl
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Hi ,

Just got stuck at one of the interviewer's question,
Is there any such vlan which can be accessed by all the VLAN that are there in the switch under obserbvation?

Pls throw some light ?


Thanks
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Re: VLAN Related Querry ? 10 years 3 months ago #16028

  • ramasamy
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Hi

Don't create lot of threads with the same question. It will be tedious if some one is looking on it. Please be patient some one will replay to your question.
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Re: VLAN Related Querry ? 10 years 3 months ago #16064

  • Smurf
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The only thing i can think here is if they are talking about Private VLAN's.

From Cisco-Online:PVLANs provide layer 2 isolation between ports within the same broadcast domain. There are three types of PVLAN ports:* Promiscuous? A promiscuous port can communicate with all interfaces, including the isolated and community ports within a PVLAN.* Isolated? An isolated port has complete Layer 2 separation from the other ports within the same PVLAN, but not from the promiscuous ports. PVLANs block all traffic to isolated ports except traffic from promiscuous ports. Traffic from isolated port is forwarded only to promiscuous ports.* Community? Community ports communicate among themselves and with their promiscuous ports. These interfaces are separated at Layer 2 from all other interfaces in other communities or isolated ports within their PVLAN.For Example: If you host several servers from different companies, you can be sure that there will be no communication between the servers although they are in the same subnet. Communication is only allowed from the rules above mentioned.

Hope it helps
Wayne Murphy
Firewall.cx Team Member
www.firewall.cx

Now working for a Security Company called Sec-1 Ltd in the UK, for any
Penetration Testing work visit www.sec-1.com or PM me for details.
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Re: VLAN Related Querry ? 10 years 3 months ago #16167

  • zillah
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Thanks and may be someone need the link for future reference
[code:1]http://www.cisco.com/en/US/tech/tk389/tk814/tk840/tsd_technology_support_sub-protocol_home.html[/code:1]
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