Specifications

10-38
Cisco IGX 8400 Series Provisioning Guide, Release 9.3.3 and Later Releases
OL-1166-04
Chapter 10 Cisco IGX 8400 Series IP Service
IP Service Provisioning
Example 10-1 IGX Configuration with Multiple Partitions
sw188 TN Cisco IGX 8420 9.3.10 Aug. 16 2000
16:47 GMT
VSI Partitions on this node
Interface (slot.port) Part 1 Part 2 Part 3
Line 10.1 E E D
VTrunk 10.2.1 D D D
Trunk 11.1 E E D
VTrunk 11.7.1 E D D
Last Command:dsprsrc
Next Command:
Slave Redundancy for the UXM and UXM-E
The two redundant pair slaves keep the redundant card in a hot standby state for all VSI connections.
This is accomplished by a bulk update (on the standby slave) of the existing connections at the time that
Y redundancy is added, and also an incremental update of all subsequent connections.
The Slave Hot Standby Redundancy feature enables the redundant card to fully duplicate all VSI
connections on the active card, and prepare for operation on switchover. On bringup, the redundant card
initiates a bulk retrieval of connections from the active card for fast sync-up. Subsequently, the active
card updates the redundant card on a real-time basis.
The VSI Slave Hot Standby Redundancy feature provides the capability for the slave standby card to be
preprogrammed the same as the active card. When the active card fails, the slave card switchover
operation can be implemented quickly. Without the VSI portion, the UXM card has already provided the
hot standby mechanism by duplicating CommBus messages from the NPM to the standby UXM card.
The following sections describe types of communication between the switch software and firmware to
support VSI master and slave redundancy.
VSI Slave Redundancy Mismatch Checking
To provide a smooth migration of the VSI feature on the UXM card, line and trunk Y-redundancy is
supported. You can pair cards with and without the VSI capability as a Y-redundant pair, if the feature
is not enabled on the specific slot. If the feature is not enabled on a specific slot, switch software will
not perform “mismatch checking” if the UXM firmware does not support the VSI feature. The VSI
capability is treated as a card attribute and added to the attribute list.
Table 10-13 Partitioning Example
Interface AutoRoute Partition 1 Partition 2 Partition 3
4.2 lcns: 1000
bw: 20000 cps
Enable
lcns: 2000
bw:1000–2000 cps
vpi: 200–250
Enable
lcns: 2000
bw: 77840–77840
cps
vpi: 20–29
Enable
lcns: 2000
bw: 1000–2000 cps
vpi: 30–50