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Cisco ONS 15454 Reference Manual, R8.5.x
78-18106-01
Chapter 7 Card Protection
7.1.1 1:1 Protection
7.1.1 1:1 Protection
In 1:1 protection, a working card is paired with a protect card of the same type. If the working card fails,
the traffic from the working card switches to the protect card. You can provision 1:1 to be revertive or
nonrevertive. If revertive, traffic automatically reverts to the working card after the failure on the
working card is resolved. Figure 7-1 shows an example of the ONS 15454 in a 1:1 protection
configuration. Each working card in an even-numbered slot is paired with a protect card in an
odd-numbered slot: Slot 1 is protecting Slot 2, Slot 3 is protecting Slot 4, Slot 5 is protecting Slot 6,
Slot 17 is protecting Slot 16, Slot 15 is protecting Slot 14, and Slot 13 is protecting Slot 12.
Figure 7-1 Example: ONS 15454 Cards in a 1:1 Protection Configuration (SMB EIA)
Table 7-1 provides supported 1:1 protection by electrical card type.
33384
1:1 Protection
TCC+
XC10G
AIC (Optional)
XC10G
TCC+
Working
Working
Working
Working
Working
Working
Protect
Protect
Protect
Protect
Protect
Protect
Table 7-1 Supported 1:1 Protection by Electrical Card
Working Card Protect Card Working Slot Protection Slot
DS1-14 or DS1N-14 DS1-14 or DS1N-14 2 1
DS3-12/DS3-12E or
DS3N-12/DS3N-12E
DS3-12 or DS3N-12 4 3
DS3i-N-12 DS3i-N-12 6 5
DS3XM-6 (Transmux) DS3XM-6 (Transmux) 12 13
DS3XM-12 (Transmux) DS3XM-12 (Transmux) 14 15
16 17