24-2
Cisco 10000 Series Router Software Configuration Guide
OL-2226-23
Chapter 24 Configuring IP Version 6
Supported Features
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Ability to match on fragment and presence of routing headers
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Skipping extension headers to get to layer 4 information
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Flag setting to match on the “undetermined-transport” ACL flag
• IPv6 Internet Control Message Protocol (ICMP)
• IPv6 NDP
• IPv6 Layer 2 encapsulation:
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Point to Point Protocol (PPP)
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Multilink PPP
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High-level Data Link Control (HDLC)
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VLAN
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Point-to-point Frame Relay
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Point-to-point ATM
• IPv6 Routing:
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Static
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Routing Information Protocol (RIPng)
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Open Shortest Path First (OSPFv3)
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Border Gateway Protocol (BGP4+)
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Intermediate System-to-Intermediate System (ISISv6)
• IPv6 Tunneling (manual and generic routing encapsulation (GRE))
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Manually configured bi-directional IPv6-in-IPv4 GRE tunnels
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Manually configured bi-directional IPv4-over-IPv4 tunnels
Maximum of 1000 IPIP or GRE tunnels
• HA/ISSU coexistence; IPv6 support is RPR+
• IPv6 Unicast Forwarding
The Cisco 10000 series router maintains the following global (unless otherwise specified)
IPv6-specific packet counters:
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forwarded—number of IPv6 packets forwarded
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no adjacency—number of IPv6 packets punted due to adj_index=0. Statistics per VCCI will be
collected for this specific punt case (diversion cause).
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adj_discard— number of IPv6 packets dropped due to discard adjacency. Statistics per VCCI
will be collected for this specific drop (column 5).
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adj_punt—number of IPv6 packets punted due to punt adjacency
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adj_glean— number of IPv6 packets punted due to glean adjacency
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adj_drop—number of IPv6 packets punted due to drop adjacency (RP generates ICMP and
drops after that)
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adj_null—number of IPv6 packets punted due to null adjacency
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adj_receive—number of IPv6 packets punted due to receive adjacency
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adj_unknown—number of IPv6 packets punted due to unknown adjacency (e.g. 0x80)
• Strict Reverse Path Forwarding (RPF)
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