Ring Applications - Alcatel-Lucent 9500 MXC User Manual

Chapter 2. 9500 MXC Terminals

Ring Applications

Vol. II-2-26
• NMS visibility between all IDU ES terminals requires linking of the Ethernet
NMS ports at each site. As the IDU ES has a single Ethernet NMS port, where
three or more are grouped at a site, as at Site B, a simple external hub must be
used to provide the required porting capacity.
Network-connected IDU ES Links
Figure 2-12.
A
E1/DS1 trib
C1
IDU ES
options
P1
Nx LAN
10/100Base-T
L2
ports
Switch
IDU ES is a 1+0 platform; it does not offer hot-standby or diversity options.
However, IDU ES links can be installed in a ring network topology to support
alternate-path protection of Ethernet traffic using external RSTP switches.
• Using one channel, as illustrated in Figure 2-13, ring capacities to 98 Mbps are
supported.
• Using both channels, C1 and C2, two concentric rings are supported, each up to
98 Mbps.
• Where concentric rings are used, link aggregation may be used in the external
switch to provide a single LAN interface.
• For NMS visibility around ring, IDU ES terminals are interconnected at each
site via their Ethernet NMS ports.
• E1/DS1 circuits can also be configured on each link as pt-to-pt connections (not
ring protected).
B
IDU ES C1
C1 IDU ES
P1
P1
P1
L2
Switch
C1
IDU ES
C
C1
IDU ES
P1
L2
Switch
D
C1
IDU ES
P1 P4
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