Alcatel-Lucent 7450 - End to End Load Sharing Using a Load Sharing GMPLS Tunnel Group; Figure 41: End-To-End ECMP with Glsp Diversity Across Single UNI-C

End to End Load Sharing Using a Load Sharing GMPLS Tunnel Group
Page 430 7450 ESS MPLS Guide
Figure 41: End-to-End ECMP with gLSP Diversity Across Single UNI-C
End to End Load Sharing Using a Load Sharing GMPLS Tunnel
Group
Figure 42 shows the case where multiple gLSPs, instantiated as black and white Ethernet ports, are
bundled together in a similar manner to LAG, using a GMPLS tunnel group. That is, each member
gLSP of a tunnel group effectively maps to a member port, which runs end to end between remote
UNI-Cs. Note that a LAG does not and cannot terminate on the neighboring 1830 PSS UNI-N. A
single IP network interface is bound to the bundle of ports represented by the gLSPs. LACP does
not run across the bundle; RSVP signaling is instead used to convey the state of the gLSP and thus
the corresponding member port of the tunnel group. Traffic is load shared across the tunnel group
members.
SR/XRS
UNI-C UNI-N
UNI-C
SRLG
SR/XRS
UNI-CUNI-N
UNI-N UNI-C
OTN/photonic
switches
SRLG
Diverse
UNI-N
24856
IPIP
Path, PathErr
ECMP ECMP