However, you must keep in mind the hardware scaling limitations when you configure
an ICR cluster containing both E320 routers and ERX routers.
NOTE: While deploying ICR, service providers must ensure that the aggregation layer
between the E Series router and access node (DSLAM) provides a broadcast domain
per VLAN or per S-VLAN between active and backup routers. In the case of a direct
connect model the access node must provide the broadcast domain per VLAN or per
S-VLAN between the active and backup routers or instead provide an Ethernet switch
such as EX Series Ethernet Switch between the access node and E Series router.
Related Topics
ICR Platform Considerations
ICR is supported on all E Series routers.
For information about modules supported on E120 and E320 routers:
For information about modules supported on ERX routers:
Interface Specifiers
The majority of the configuration task examples in this topic collection use the
slot/adapter/port format to specify an interface. However, the interface specifier
format that you use depends on the router that you are using.
For ERX7xx models, ERX14xx models, and ERX310 routers, use the slot/port format.
For example, the following command specifies a Gigabit Ethernet interface on slot
0, port 1 of an ERX7xx model, ERX14xx model, or ERX310 router.
For E120 and E320 routers, use the slot/adapter/port format, which includes an
identifier for the bay in which the I/O adapter (IOA) resides. In the software, adapter
0 identifies the right IOA bay (E120 router) and the upper IOA bay (E320 router);
adapter 1 identifies the left IOA bay (E120 router) and the lower IOA bay (E320
ICR Scaling Considerations on page 131
Configuring an ICR Partition on page 134
See E120 and E320 Module Guide, Table 1, Modules and IOAs for detailed module
specifications.
See E120 and E320 Module Guide, Appendix A, IOA Protocol Support for information
about the modules that support ICR.
See ERX Module Guide, Table 1, ERX Module Combinations for detailed module
specifications.
See ERX Module Guide, Appendix A, Module Protocol Support for information about
the modules that support ICR.
host1(config)#interface gigabitEthernet 0/1
Chapter 6: Managing Interchassis Redundancy
ICR Platform Considerations
129
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