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On Cisco IOS XR software, which two of the address-family command options in IS-IS configuration mode are valid? (Choose two)
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Cisco 640-878 Exam
A. address-family clns
B. address-family ipv4 unicast
C. address-family ipv6 unicast
D. address-family vpnv4
E. address-family vpnv6
Correct Answer: BC
Explanation/Reference:
Explanation: Explanation/Reference:
http://www.cisco.com/en/US/docs/ios_xr_sw/iosxr_r3.8/routing/command/reference/rr38isis.pdf To enter address family configuration mode forconfiguring Intermediate System-to-Intermediate System (IS-IS) routing that use standard IP Version 4 (IPv4) and IP Version 6 (IPv6) address prefixes, use the address-family command in router configuration or interface configuration mode. To disable support for an address family, use the no form of this command. Address family {ipv4 | ipv6} {unicast | mulitcast} no address-family {ipv4 | ipv6} {unicast | multicast}