ESS Overview
44 Avaya Enterprise Survivable Servers (ESS) Users Guide
Example 6: CSS with multiple nodes
In example 6, there is a multiple node CSS controlled by the S8710 Main server. Port Network 2
is connected to the CSS node in Port Network 3. Port Network 5 is connected to the CSS node
in Port Network 4. There is no IPSI in either Port Network 2 or Port Network 5 (see Figure 15
).
Figure 15: CSS with multiple nodes in normal operation
CSS CSS
UID
2
1
0
1
1
0
3
2
3
2
disc
COMPACT
5
4
5
4
S
i
m
p
l
e
x
D
u
p
l
e
x
ch
ch
2
1
UID
2
1
0
1
1
0
3
2
3
2
disc
COMPACT
5
4
5
4
S
i
m
p
l
e
x
D
u
p
l
e
x
ch
ch
2
1
S8710 Media Server
(Main Server)
PN #1
PN #2
PN #3
PN #6
PN #5
PN #4
S8700 ESS Server
(1st Alternative)
cycmcss5 KLC 031505
PN #2 does not
have an IPSI
PN #5 does not
have an IPSI
Out of Service
CSS / EI (Fiber)
ATM / ATM-EI (Fiber)
Dup Link
Port Network Control Link (EAL)
IP Connection into Control Network
Server or Network Failure
VoIP Path
DSIC LInk