Cisco WS-SUP32-GE-3B - Supervisor Engine 32 Software Configuration Manual page 36

Software Features Supported in Hardware by the PFC3B
Policy-based routing (PBR) for route-map sequences that use the match ip address, set ip
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next-hop, and ip default next-hop PBR keywords.
To configure PBR, refer to the Cisco IOS Quality of Service Solutions Configuration Guide, Release
12.2, "Classification," "Configuring Policy-Based Routing," at this URL:
http://www.cisco.com/en/US/docs/ios/12_2/qos/configuration/guide/qcfpbr_ps1835_TSD_Products_C
onfiguration_Guide_Chapter.html
Note
Except on MPLS interfaces, TCP intercept—To configure TCP intercept, see the
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Intercept" section on page
Hardware-assisted NetFlow Aggregation—Refer to this URL:
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http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2ZY/configuration/guide/nde.
html
Bidirectional Protocol Independent Multicast (PIM) in hardware—See
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Bidirectional PIM Works" section on page
Multiple-path Unicast Reverse Path Forwarding (RPF) Check—To configure Unicast RPF Check,
•
see the
Except on MPLS interfaces, Network Address Translation (NAT) for IPv4 unicast and multicast
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traffic.
Note the following information about hardware-assisted NAT:
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–
–
To configure NAT, refer to the Cisco IOS IP Configuration Guide, Release 12.2, "IP Addressing and
Services," "Configuring IP Addressing," "Configuring Network Address Translation," at this URL:
http://www.cisco.com/en/US/docs/ios/12_2/ip/configuration/guide/1cfipadr.html
To prevent a significant volume of NAT traffic from being sent to the PISA, due to either a DoS
attack or a misconfiguration, enter the mls rate-limit unicast acl {ingress | egress} command
described at this URL:
http://www.cisco.com/en/US/docs/switches/lan/catalyst6500/ios/12.2ZY/command/reference/M1.
html
(CSCea23296)
IPv4 Multicast over point-to-point generic route encapsulation (GRE) Tunnels—Refer to the
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publication at this URL:
http://www.cisco.com/en/US/docs/ios/12_2/interface/configuration/guide/icflogin.html
The PFC3B does not provide hardware acceleration for tunnels configured with the tunnel key
Note
command.
Catalyst Supervisor Engine 32 PISA Cisco IOS Software Configuration Guide, Release 12.2ZY
1-4
If the PISA address falls within the range of a PBR ACL, traffic addressed to the PISA is
policy routed in hardware instead of being forwarded to the PISA. To prevent policy routing
of traffic addressed to the PISA, configure PBR ACLs to deny traffic addressed to the PISA.
30-2.
"Configuring Unicast Reverse Path Forwarding Check" section on page
The PFC3B does not support NAT of multicast traffic.
The PFC3B does not support NAT configured with a route-map that specifies length.
When you configure NAT and NDE on an interface, the PFC3B sends all traffic in fragmented
packets to the PISA to be processed in software. (CSCdz51590)
25-6.
Chapter 1 Product Overview
"Configuring TCP
"Understanding How IPv4
30-2.
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