Cisco ASR 5500 User Manual

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A single physical port can support multiple logical interfaces when you configure VLAN tags for that
physical port. You can use VLAN tagging to bind a single physical port to multiple logical interfaces
that reside in different contexts.
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Assign all logical interfaces a valid IP address and subnet.
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Give each logical interface within a context a unique IP address(es). Logical interfaces in different
contexts can have the same IP address(es).
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If multi-homing is supported on the network, you can assign all logical interfaces a single primary
IP address and up to 16 secondary IP addresses.
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You can configure a logical interface in only one context, but you can configure multiple interfaces (up
to 512) in a single context.
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You can apply a maximum of 256 access control list (ACL) rules to a single logical interface.
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All ports are identified by their <slot#>/<port#>.
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Each physical port for subscriber traffic on an MIO/UMIO/MIO2 card may contain up to a maximum
of 1,024 VLAN tags.
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A logical interface is limited to using a single VLAN on a single physical port, identified by its
<card#/slot#/port#>.
Packet Data Network (PDN) Interface Rules
The following engineering rules apply to the interface to the packet data network (PDN):
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Configure the logical interfaces used to facilitate the PDN interface within the egress context.
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The default is to use a single interface within the egress context to facilitate the PDN interface.
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You can configure multiple interfaces in the egress context by using static routes or dynamic routing
protocols.
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You may also configure next-hop default gateways.
Context Rules
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A maximum of 63 contexts may be configured per chassis.Enabling demux functions on an MIO card
reduces the maximum number of contexts to 10.
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Interfaces per Context
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Prior to Release 15.0: Up to 16 interfaces can be configured within a single context.
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For Release 15.0 and higher: With the Demux MIO/UMIO/MIO2 feature enabled, up to 64
interfaces can be configured within a single context.
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512 Ethernet+PPP+tunnel interfaces
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32 ipv6ip tunnel interfaces
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511 GRE tunnels (2,048 GRE tunnels per chassis)
ASR 5500 System Administration Guide, StarOS Release 21.4
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Engineering Rules
Packet Data Network (PDN) Interface Rules

Cisco ASR 5500 Specifications

General

Brand	Cisco
Model	ASR 5500
Category	Network Router
Language	English