From: Jens Petter (jenseike@start.no)
Date: Fri Apr 07 2006 - 00:58:46 GMT-3
Yes, Nick is absolutly right - and also the reflector port is a port used to
encapsulate/deencapsulate the packets before sending on to the rspan
vlan... Setting sw access vlan 44 would not do anything for you since this
interface is effectivily disabled for any other oparations even spanning
tree....
Jens
----- Original Message -----
From: "Nick Griffin" <ngriffin@sio.midco.net>
To: "Alexei Monastyrnyi" <alexeim@orcsoftware.com>
Cc: "Faryar Zabihi (fzabihi)" <fzabihi@cisco.com>; "Roberto Fernandez"
<rofernandez@us.telefonica.com>; <ccielab@groupstudy.com>
Sent: Friday, April 07, 2006 2:55 AM
Subject: Re: What is a Reflector-Port on RSPAN ?
> If I understand you correctly, no you do not need to enter "sw access vlan
> 44", the reflector port is used to loop the traffic your monitoring from
> your source port/vlan, out the interface, back in and onto the remote span
> vlan. Configuring the "reflector port" effectively disables it just as if
> were a local port used in a local span session. Unless I'm not catching
> what your throwing.
>
>
>
> Alexei Monastyrnyi wrote:
>> Thanks, but it didn't make things clear for me... sorry.
>> Let me put it tis way.
>> If RSPAN VLAN is 444, and reflector port is fa 0/21 - do I have to do
>>
>> in fa 0/21
>> sw acc vlan 444
>>
>> Does this reflector port need to be in "connected" status?
>>
>> Very practical questions, cause you don't have a way to test this config
>> on real lab so you have to know what port to pick as a reflector port and
>> how this port should be configured. This part is missing on DocCD section
>> regarding RSPAN, ... or I cannot read it.
>>
>> I used a lot of SPAN sessions within one switch for my work, but never
>> RSPAN and in my current lab there is only one 3550 so cannot lab it up.
>>
>> A.
>>
>> ----- Original Message ----- From: "Faryar Zabihi (fzabihi)"
>> <fzabihi@cisco.com>
>> To: "Alexei Monastyrnyi" <alexeim@orcsoftware.com>; "Roberto Fernandez"
>> <rofernandez@us.telefonica.com>; <ccielab@groupstudy.com>
>> Sent: Thursday, April 06, 2006 10:54 PM
>> Subject: RE: What is a Reflector-Port on RSPAN ?
>>
>>
>> 1. Any access ports configured into an RSPAN VLAN shall become
>> inactive and remain in that state until either the ports are configured
>> into another VLAN or the VLAN is no longer an RSPAN VLAN.
>>
>>
>>
>> 2. Learning is disabled in RSPAN VLANs. This ensures that traffic
>> is flooded to all the trunk ports in the VLAN.
>>
>>
>>
>> 3. Trunk ports carry RSPAN VLAN traffic like that of any other
>> VLAN. VTP pruning supports pruning of RSPAN VLAN traffic on trunk ports.
>>
>>
>>
>> 4. STP is enabled for all ports in the RSPAN VLAN, to support link
>> redundancy while avoiding loops.
>>
>>
>> Faryar Zabihi
>>
>>
>> -----Original Message-----
>> From: Alexei Monastyrnyi [mailto:alexeim@orcsoftware.com]
>> Sent: Thursday, April 06, 2006 1:47 PM
>> To: Faryar Zabihi (fzabihi); Roberto Fernandez; ccielab@groupstudy.com
>> Subject: Re: What is a Reflector-Port on RSPAN ?
>>
>> is that relevant if the reflector port belongs to that special RSPAN
>> VLAN?
>>
>> A.
>>
>> ----- Original Message -----
>> From: "Faryar Zabihi (fzabihi)" <fzabihi@cisco.com>
>> To: "Roberto Fernandez" <rofernandez@us.telefonica.com>;
>> <ccielab@groupstudy.com>
>> Sent: Thursday, April 06, 2006 9:01 PM
>> Subject: RE: What is a Reflector-Port on RSPAN ?
>>
>>
>>> Good doc on rspan...there is a section on reflector-ports
>>> http://www.cisco.com/en/US/products/hw/switches/ps663/products_configu
>>> ra tion_guide_chapter09186a0080176332.html
>>>
>>>
>>> Faryar Zabihi
>>>
>>> -----Original Message-----
>>> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf
>>> Of Roberto Fernandez
>>> Sent: Thursday, April 06, 2006 10:21 AM
>>> To: ccielab@groupstudy.com
>>> Subject: What is a Reflector-Port on RSPAN ?
>>>
>>> Friends,
>>>
>>> Quick question:
>>>
>>> What is a reflector-port in regards to the RSPAN configuration? I'm
>>> confused on this.
>>>
>>> Best Regards,
>>> Roberto
>>>
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