ASR 900 Combo 8-Port SFP GE and 1-Port 10 GE 20G Interface Module (A900-IMA1Z8S-CXMS)
The interface module operates in following two modes:
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Single XFI or 10 G mode
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Dual XFI or 20 G mode
Single XFI or 10 G mode
Consider the following requirement while working on the 10 G mode:
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OC-192 or SFP+ port is supported on the 10G GE port. In the 10G mode, 7.5G for CEM traffic is supported.
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If bandwidth is available to accommodate a particular circuit or Ethernet port, then configuration is allowed, and it can be performed. Otherwise, the configuration is rejected due to bandwidth limitation.
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When there is a change in the payload size, the required bandwidth gets modified accordingly. This in turn checks for the bandwidth and if the sufficient bandwidth is not available, the configuration is rejected.
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You can remove or delete the existing configuration from the port and perform new configuration on the port.
Dual XFI or 20 G mode
You can convert the IM into dual mode. In 20G mode of operation, channelized (xfi0) and non-channelized (xfi1) bandwidth are available.
Enter the following commands to convert into dual mode and then reload the IM:
router (config)# platform hw-module configuration
PE1(conf-plat-hw-conf)# hw-module <slot/subslot> A900-IMA1Z8S-CXMS mode 10G_CEM
Consider the following requirements while working on the 20-G mode:
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For configuring CEM group, the software performs bandwidth check. If the required bandwidth is not available, you cannot configure the CEM group.
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If a maximum capacity configuration is already performed on the IM and you update the payload size, then the update is not accepted on the same channel (xfi). You need to remove some configurations on circuits and then update the payload again.
For slot compatibility, refer Supported RSP and Slots in the Cisco ASR 900 Series Routers and Cisco ASR 920 Series Routers, and Cisco Interface Module Hardware Installation Guide.