Ipv6 uses prefix 前缀 length to indicate the

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IPv6 uses prefix 前缀 length to indicate the network portion 一部分 of an IPv6 address: IPv6 address/prefix length Prefix length can range from 0 to 128 Typical prefix length is /64 16*4
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Presentation_ID 7 © 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential Types of IPv6 Addresses Types of IPv6 Address Unicast Multicast Anycast Note: IPv6 does not have broadcast addresses. loopback 回送地址
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Presentation_ID 8 © 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential IPv6 Unicast Addresses IPv6 Global Unicast Address Globally unique and routable Currently, only global unicast addresses 2000::/3 are being assigned ( 2001:0DB8::/32 reserved for documentation). Has three parts: Global Routing Prefix Subnet ID Interface ID
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Presentation_ID 9 © 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential IPv6 Unicast Addresses Reading an IPv6 Global Unicast Address Example:
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Presentation_ID 10 © 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential IPv6 Unicast Addresses Static Configuration of IPv6 Global Unicast Address
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Presentation_ID 11 © 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential IPv6 Unicast Addresses Dynamic Configuration of IPv6 Global Unicast Address using SLAAC Two ways: SLAAC DHCPv6
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Presentation_ID 12 © 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential IPv6 Unicast Addresses Dynamic Configuration of a Global Unicast Address using DHCPv6
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Presentation_ID 13 © 2008 Cisco Systems, Inc. All rights reserved. Cisco Confidential Dynamic Configuration of a Global Unicast Address The Interface ID if option 1 (SLAAC only) or option 2 (SLAAC with DHCPv6) is used, the client does not obtain the actual Interface ID portion of the address from this processes. The client device must determine its own 64-bit Interface ID by: EUI-64 process Randomly generating 64-bit number.
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