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Conference smaug::snagwy

Title:SNA GATEWAY NOTEFILE
Notice:Note 1.* -> kits and doc, 288.* -> obtaining product support
Moderator:EDSCLU::GARROD
Created:Fri Feb 07 1986
Last Modified:Fri Jun 06 1997
Last Successful Update:Fri Jun 06 1997
Number of topics:7116
Total number of notes:28576

7032.0. "llc2,questions?" by MDR01::SOENGAS (MCS Madrid) Tue Mar 04 1997 07:41


	Hi,

	I understand this configuration is good but I have doubt,
	so it's possible someone answer if it is ok or not?
	

	
	digital unix
	sna peer server
	Sna Appc lu 6.2 3.0
                !		 ethernet
	________________________________
		!                    !
		!                    !  LLC2
		!                    !
	    router cisco1      router cisco2
	        !		     !
		!               


			X.25 NETWORK
		
					(TWO)
		!		     !	synchronous lines (64kb)
		!                    !  
		!                    !  
          ________________________________
	  !       HOST MVS		 !
          !			         !
          ________________________________

	The x.25 call is always initiated from the MVS Side , the
	routers are cisco routers, they translate this X.25 call 
	to llc2 and go out trough of the ethernet until the peer server.
	I think the configuration of peer server with
	two transmission group's, two llc2 sap links on the ethernet,
	Each llc2 pointing to the mac address of the each router
    	This configuration is in order to make lu6.2 with independent
    	lu's and parallel sessions.
    
	I have two questions?

	1. The local lsap address has be two differents LSAP ADDRESS,
	one for each llc2 sap (04,another)

	2. And the remote mac address is the mac address of the 
	ethernet cisco address.

	Thanks for your answers,
	Elsa Soengas
	MCS Spain
T.RTitleUserPersonal
Name		DateLines
7032.1answers please!!!IB001::ELSAThu Mar 06 1997 08:1010
    
    
    	Hi,
    
    
    	It's possible for some expert answer about this questions?
    	Thanks in advance,
    	Elsa Soengas
    
    	MCS Spain
7032.2customer waiting please!IB001::ELSAFri Mar 07 1997 06:089
    
    
    	Hi,
    
    	It's possible for someone on Digital answer this reply,
    	one customer is waiting for this.
    	
        Elsa Soengas
    	MCS Spain
7032.3Need clarificationEDSCLU::PORCAROFri Mar 07 1997 09:4415
    Elsa,
    
    I think you have gotten no response because folks
    don't know exactly what your looking for.
    
    It sounds like you wish to have SNA Peer Server over X.25.
    That can be done with X.25 Access software and a sync card on
    the Alpha running Peer Server or in combination with an X.25
    Gateway.
    
    It puzzles me to see you show Cisco routers connected into
    the X.25 cloud. What are they doing? Tunneling? Routing?
    Bridging? X.25 PAD? somethng else?
    
    Bill
7032.4tunneling of sna to llc2IB001::ELSAMon Mar 10 1997 03:4219
    
    
    	Hi,
    
    	Bill,
    
    	Someone has selled this configuration , I have to mount this,
    	I try to obtain on this moment the configuration of the ciscos
    	in order to clarify my idea of the configuration and see that
    	it's possible or not.
    
    	The customer said to me that the ciscos make tunneling of sna to
    	LLC2 (DLSW). If it's the context and the MVS make the X.25 call
    	and the peer receive the llc2 connection , it is feasible.
    
    	Thanks for your feedback,
    	I try to obtain the exact configuration on the ciscos.
    	Elsa Soengas
    	MCS Spain
7032.5EDSCLU::PORCAROTue Mar 11 1997 08:2011
    If the Peer Server works strictly SNA over LLC2 (ethernet)
    and it doesn't have to worry about the X.25, Ciscos, etc.,
    you're all set. In that case the Cisco's would act as bridges.
    The MVS side would be LLC2 over ethernet as well.
    
    If, as you say, the Cisco's do DLSW, you definitely need
    to get an exact picture of the capabilities of that setup.
    
    It's got to be totally transparent to the Peer Server.
    
    Bill
7032.6Cisco's config. MDR01::VENTURAMCS MadridWed Apr 02 1997 04:1055
    
    	We have got, finally, the cisco's router configuration. We'll try
    to get working this configuration the next week at customer site. 
    
    	Any comments are welcome.
    	Ventura Acera/Elsa Soengas
    
    !------!     !      e0  !-------!                           !------!
    !Peer  !     !----------!Cisco  !s0                         ! IBM  !
    !Server!-----!       e1 !Router1!------\________/-----------! MVS  !
    !      !mac_ !      !---!       !      /  X25   \  	   mac_ !      !
    !      !host !      !   !_______!      \ Cloud  /  virtual1 !      !
    !      !            !                  / QLLC   \           !      !
    !______!            !e0 !-------!      \        /-----------!      !
                        !---!Cisco  !s0    /        \      mac_ !      !
                        !   !Router2!------\________/  virtual2 !______!
                            !_______!
    
    
    Router1 Config:
    	
    	source-bridge ring-group 100
    	source-bridge transparent 100 1 1 1
    	!
        int serial 0
        x25 map qllc mac_virtual1 x25_number
        qllc srb mac_virtual1 anillo_virtual 100
        qllc partner mac_virtual1 mac_host
    	!
        int eth 0
    	bridge_group 1
    	!
    	int eth 1
    	bridge_group 1
    	!
    	bridge 1 protocol dec
    
    
    Router2 Config:
    	
    	source-bridge ring-group 100
    	source-bridge transparent 100 1 1 1
    	!
        int serial 0
        x25 map qllc mac_virtual2 x25_number
        qllc srb mac_virtual2 anillo_virtual 100
        qllc partner mac_virtual2 mac_host
    	!
        int eth 0
    	bridge_group 1
    	!
    	bridge 1 protocol dec