Specifications
3-15
Cisco MGX 8260 Command Line Interface Guide
Release 1.2, Part Number 78-10987-01 Rev. B0, January, 2002
Chapter 3 Card Management
Configuration Tasks for Cards
A failure of the active card causes a switchover to the backup card. During the switchover, the active
and standby roles are reversed (see Figure 3-5). The card that failed reboots, and the Card LED changes
to either yellow or red, depending on the type of problem. After a switchover, the other BSC is
unprotected until you fix the problem and restore the primary card to the active state.
Figure 3-5 Switchover with 1:1 BSC Redundancy
After repair of the failure, you restore normal operation by invoking a switchback. The system does not
automatically restore the protection pair to its original state. For more information, see Invoking a
Switchback, page 3-18.
Configuring BSC or NSC Redundancy
This section describes the process for configuring redundancy for BSC and NSC cards.
Viewing BSC and NSC Redundancy
To view all redundancy pairs, enter the lsreds command.
SCC
CARD
LINE
1
2
3
4
SCC
CARD
LINE
1
2
3
4
ACTFDX
1
2
3
4
ACTLINE
LAN 1
LAN 2
ALMC
ALMH
CLR
ACO
DISK
PWR A
PWR B
ACTFDX
1
2
3
4
ACTLINE
LAN 1
LAN 2
ALMC
ALMH
CLR
ACO
DISK
PWR A
PWR B
NSC
CARD
LINE
1
2
3
4
13
5
6
7
8
9
10
11
12
14
15
16
DMC
CARD
LINE
1
2
3
4
5
6
NSC
CARD
LINE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
NSC
CARD
LINE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
NSC
CARD
LINE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
NSC
CARD
LINE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
NSC
CARD
LINE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
DMC
CARD
LINE
1
2
3
4
5
6
33388
Secondary card (standby)
NSC
CARD
LINE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
NSC
CARD
LINE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
NSC
CARD
LINE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
NSC
CARD
LINE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
NSC
CARD
LINE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
NSC
CARD
LINE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Physical slot numbers
Logical slot numbers
11 12 13 14 15 16
11 12 13 14 15 15
Primary card (active)
Faile
d