Three plnes in networks Prof. Mlthi eerrghvn Ele. & Comp. Engg. Dept/CATT Polytehni University mv@poly.eu M. eerrghvn 1 Polytehni University User plne, ontrol plne, n mngement plne Mngement plne: onsists of ll the protools neee to onfigure t tles for the opertion of the network For exmple, protools for routing t issemintion (istriute or entrlize) Other funtions: performne, fult mgmt., ounting, seurity Control plne: Connetion ontrol protools in CO networks, this inlues onnetion t eh swith (onnetions t the network lyer) in CL networks, this inlues onnetion only t the enpoints (onnetions t the trnsport lyer, if the TL protool is relile) Cll ontrol protools User plne: protools for the tul flow of t M. eerrghvn 2 Polytehni University 1
Routing protool in ll three types of networks - Phse 1 Dest. Next hop Dest. -* Next hop Routing protool Dest. -* Routing protool Next hop Routing protool Routing tles Host M. eerrghvn Routing protools exhnge topology/loing/rehility informtion Routes to estintions re preompute n store in routing tles 3 Polytehni University Signling protool for NL onnetion in PS CO network - Phse 2 Connetion () Port /Lel /L1 Port/Lel /L2 Connetion Port /Lel /L2 Connetion Port/Lel /L1 Host Connetion onsists of eh swith on the pth Route lookup for next hop noe to reh estintion CAC (Connetion Amission Control) for uffer n W Writing the input/output lel mpping tles n progrmming the sheuler M. eerrghvn 4 Polytehni University Port /Lel /L1 Port/Lel /L3 Connetion irtul iruit 2
Signling protool for NL onnetion in CS CO network - Phse 2 Connetion () /1 /2 Connetion Connetion /2 /2 Host Connetion onsists of eh swith on the pth Route lookup for next hop noe to reh estintion CAC (Connetion Amission Control) for W (note: no uffers) M. eerrghvn Writing the port/timeslot/λ 5 mpping tle Polytehni University /2 /1 Connetion Ciruit User-plne pket forwring in PS CO network - Phse 3 L1 Port /Lel /L1 Port/Lel /L2 L2 Lels re P/Cs in ATM Lels re trnslte from link-to-link L1 L3 Host M. eerrghvn 6 Polytehni University 3
User-plne tions in iruit-swithe network - Phse 3 /1 /2 Host its rriving t swith on time slot 1 on port re swithe to time slot 2 of port M. eerrghvn 7 Polytehni University User-plne pket forwring in CL PS network - Phse 3 Host Pket heers rry estintion host ress (unhnge s it psses hop y hop) Eh CL pket swith oes route lookup to etermine the outgoing port/next hop noe M. eerrghvn 8 Polytehni University 4
Aressing Where re enpoint resses use: n CL PS networks, enpoint resses re rrie in pket heers n CO networks, e it PS or CS, enpoint resses re rrie in onnetion messges M. eerrghvn 9 Polytehni University Summrize resses Wht re summrize resses? Why summrize resses? M. eerrghvn 10 Polytehni University 5
Summrize resses Wht re summrize resses? An ress tht represents group of enpoint resses e.g., ll 212 numers, 128.238 P resses Why summrize resses? Reues routing tle sizes hol one entry for summrize ress inste of lrge numer of iniviul resses Reues routing messge lengths tht onvey rehility informtion M. eerrghvn 11 Polytehni University Exmples of signling protools SS7 (Signling System No. 7) network (with its SS7 protool stk) rries signling messges to set up n relese iruits in telephone network M. eerrghvn 12 Polytehni University 6
Exmples of routing protools n the nternet: Link-stte routing protools, suh s Open Pth Shortest First (OSPF) Distne-vetor se routing protools, suh s Routing nformtion Protool (RP) n telephone networks: Rel-Time Network Routing (RTNR) M. eerrghvn 13 Polytehni University Exmples of ressing shemes nternet 4-yte P resses Telephone networks 8-yte E.164 ress (telephone numer) ATM networks 20-yte ATM En System Aress (AESA) M. eerrghvn 14 Polytehni University 7