DLP-
553
363-206-295
1997
December
1,
Issue
21
of
10
Page
Ring 1
Ring 2
Ring 1
Ring 2
IN
OUT
IN
OUT
MAIN 2
OLIU
MAIN 1
OLIU
A
B
C
IN
OUT
IN
OUT
MAIN 2
OLIU
MAIN 1
OLIU
A
B
C
EC-1
EC-1
CO 1
CO 2
DS3
MAIN 1
OLIU
MAIN 2
OLIU
A
BC
IN
OUT
IN
OUT
MAIN 2
OLIU
MAIN 1
OLIU
A
B
C
IN
OUT
IN
OUT
MAIN 1
OLIU
MAIN 2
OLIU
A
BC
IN
OUT
IN
OUT
m-1 to m-1
pass through connection
(ent-crs-sts1:m-1,m-1)
m-1 to m-1
pass through connection
(ent-crs-sts1:m-1,m-1)
Ring 2
Ring 1
DS3
Ring 2
Ring 1
Ring 1
Ring 2
Ring 2
Ring 1
Ring 1
Ring 2
Ring 1
Ring 2
RT 6
RT 1
RT 2
RT 3
rtrv-state-path command
indicates Ring 1 active.
sw-path-sts1 or sw-path-vt1
used to switch path.
rtrv-state-path command
indicates Ring 1 active.
sw-path-sts1
used to switch path.
rtrv-state-path command
indicates Ring 1 active.
sw-path-sts1 or sw-path-vt1
used to switch path.
RING 1 ACTIVE
RING 1 ACTIVE
RING 1 ACTIVE
RING 1 ACTIVE
RING 1 ACTIVE
rtrv-state-path command
indicates Ring 1 active.
sw-path-sts1 or sw-path-vt1
used to switch path.
RING 1 ACTIVE
Ring 1
Ring 2
RT 5
RT 4
MAIN B1
OLIU
MAIN B2
OLIU
A
B
C
IN
OUT
IN
OUT
D
MAIN B1
OLIU
MAIN B2
OLIU
A
B
C
IN
OUT
IN
OUT
D
MAIN B1
OLIU
MAIN B2
OLIU
A
B
C
IN
OUT
IN
OUT
D
MAIN B1
OLIU
MAIN B2
OLIU
A
B
C
IN
OUT
IN
OUT
D
MAIN B1
OLIU
MAIN B2
OLIU
A
B
C
IN
OUT
IN
OUT
D
mb-1 to mb-1
pass through connection
(ent-crs-sts1:mb-1,mb-1)
mb-1 to mb-1
pass through connection
(ent-crs-sts1:mb-1,mb-1)
OC-3 path switched ring
OC-12 path switched ring
Network
Interworking
Ring
Dual
in
Test
Transmission
DS3
of
Example
3.
Figure
