Service Manual

– IPv6 Multicast – 33:33:0:0:0:0 – Q1
• Add/remove specic ICMPv6 NDP protocol entry when user congures the rst ipv6 address in the front panel port
– Distribute ICMPv6 NS/RS packets to Q5.
– Distribute ICMPv6 NA/RA packets to Q6.
FP is installed for all Front panel ports.
NDP Packets
Neighbor discovery protocol has 4 types of packets NS, NA, RA, RS. These packets need to be taken to CPU for neighbor discovery.
• Unicast NDP packets:
– Packets hitting the L3 host/route table and discovered as local terminated packets/CPU bound trac. For CPU bound trac
route entry have CPU action. Below are packets are CPU bound trac.
* Packets destined to chassis.
* Route with Unresolved Arp
* Unknown trac in IP Subnet range
* Unknown trac hitting the default route entry.
• Multicast NDP packets
– NDP packets with destination MAC is multicast
* DST MAC 33:33:XX:XX:XX:XX
• NDP Packets in VLT peer routing enable
– VLT peer routing enable cases each VLT node will have route entry for link local address of both self and peer VLT node. Peer
VLT link local entry will have egress port as ICL link. And Actual link local address will have entry to CopyToCpu. But NDP
packets destined to peer VLT node needs to be taken to CPU and tunneled to the peer VLT node..
• NDP packets in VLT peer routing disable case
– NDP packets intended to peer VLT chassis taken to CPU and tunnel to peer.
Redirecting Control Trac to 12 CPU queues
The following table describes the protocol to queue mapping with the CPU queues increased to be 12.
CPU
Queue
Weights Rate (pps) Protocol
0 100
1300 BFD
1 1 300 MC
2 2 300 TTL0, TTL1, IP with options,
Mac limit violation, Hyper pull,
L3 with Bcast MacDA,
Unknown L3, ARP unresolved,
ACL Logging
3 4 400 sFlow, L3 MTU Fail frames
4 127 2000 IPC/IRC, VLT Control frames
232
Control Plane Policing (CoPP)