Limitations for IPv4 Routing
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The IPv4 routing is supported only on BDI interfaces, and not supported on physical interfaces (1G, 10G) and port channel interfaces.
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IP addresses cannot be configured on the physical and the port channel interface.
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The maximum number of IPv4 routes that can be learnt is 12,000.
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BDI level IP ACLs are not supported.
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VRRP and HSRP protocols are not supported.
Note
Effective Cisco IOS XE Gibraltar 16.12.1 and later, VRRP and HSRP protocols are supported on the Cisco NCS 520 router.
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The maximum number of VRF lite sessions supported are 128.
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BDI statistics is supported only for CPU bounded traffic, for data traffic going over BDI interface will be shown on respective underlying EFP statistics.
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For adding static ARP, it is mandatory that you specify the static MAC address. For example, to configure static ARP, specify the following commands:
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arp<ip-add> <mac-add> arpa under the config mode.
mac static address <mac> under the config-if-srv mode.
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The router sends Gratuitous ARP only whenb the BDI interface is brought up, and processes the Gratuitous ARP if it is of the request type.
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IPv6 is not supported.
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IPv4 multicast is not supported.
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IPv4 MIBs are not supported.
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IP-FRR, LFA, segment routing, and policy-based routing are not supported.
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BFD is not supported.
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IP unnumbered is not supported.
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MPLS is not supported.