Specifications

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Cisco IGX 8400 Series Provisioning Guide, Release 9.3.3 and Later Releases
OL-1166-04
Chapter 2 Cisco IGX 8400 Series Cards
Universal Switching Module
Y-Redundancy and VC Merge on the UXM-E
Note Because VC merge is not supported on the UXM, y-redundancy cannot be set up using a UXM-E and a
UXM without generating a feature mismatch error. If y-redundancy is set up between a UXM-E and a
UXM, the VC merge feature cannot be enabled.
Before setting up y-redundancy on two UXM-E cards, make sure that VC merge feature support is
enabled on both cards. Both cards must run the appropriate firmware to support the VC merge feature.
For more information on enabling VC merge on the IGX, see the “VC Merge on the IGX” section on
page 10-40 in Chapter 10, “IP Service—Functional Overview.”
Note VC merge on the IGX is not supported in releases preceding Switch Software Release 9.3.40.
UXM-E Troubleshooting
Switch software classifies UXM-E trunk statistics as physical or logical. See the following list of rules
used to distinguish physical trunk statistics from logical ones:
• A UXM-E trunk is mapped to a physical line object.
• A physical (nonIMA) trunk is mapped one-to-one with a physical line.
• An IMA trunk is mapped to more than one physical line.
• All line alarms are reported as physical line alarms.
• Other trunk alarms (such as communication failure) are reported like NTM trunk alarms.
• For nonIMA trunks, the alarm includes the physical line alarm.
• For IMA trunks, the trunk and physical line alarms are separate and distinct.
Trunk Statistics on the UXM-E
The following switch software commands apply to statistics for physical lines within an IMA trunk:
• cnfphyslnstats enables and configures physical line statistics.
• dspphyslnstatcnf displays the current physical line statistics configuration.
• dspphyslnstathist displays the physical line statistics.
• dsptrkstatcnf displays the current configuration of logical trunk statistics.
• dsptrkstathist displays logical trunk statistics.
• dsptrkstats displays trunk statistics.
• dspportstats displays port, IMA, and ILMI statistics for trunk ports.
• dstrkerrs displays trunk errors.
• clrtrkalm clears trunk alarms caused by statistical errors.
• dspchstats displays channel statistics, such as cells received and transmitted, EOF cells received,
noncompliant cells received, CLP=0 and CLP=1 cells received and transmitted, average receive and
transmit VC queue depth, ingress and egress VSVC allowed cell rate, and OAM state.