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Cisco Catalyst Blade Switch 3130 for Dell Software Configuration Guide
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Chapter35 Configuring IPv6 ACLs Understanding IPv6 ACLs
Supported ACL Features
IPv6 ACLs on the switch have these characteristics:
•Fragmented frames (the fragments keyword as in IPv4) are supported.
•The same statistics supported in IPv4 are supported for IPv6 ACLs.
•If the switch runs out of hardware space, packets assoc iated with the ACL are forwarded to the CPU,
and the ACLs are applied in software.
•Routed or bridged packets with hop-by-hop options have IPv6 ACLs applied in software.
•Logging is supported for router ACLs, but not for port ACLs.
•The switch supports IPv6 address-matching for a full range of prefix-lengths.
IPv6 ACL Limitations
With IPv4, you can configure standard and extended numbered IP ACLs, named IP ACLs, and MAC
ACLs. IPv6 supports only named ACLs.
The switch supports most Cisco IOS-supported IPv6 ACLs with some exceptions:
•The switch does not support matching on these keywords: flowlabel, routing header, and
undetermined-transport.
•The switch does not support reflexive ACLs (the reflect keyword).
•This release supports only port ACLs and router ACLs for IPv6; it does not support VLAN ACLs
(VLAN maps).
•The switch does not apply MAC-based ACLs on IPv6 frames.
•You cannot apply IPv6 port ACLs to Layer 2 EtherChannels.
•The switch does not support output port ACLs.
•Output router ACLs and input port ACLs for IPv6 are supported only when the switch is running the
advanced IP services feature set. Switches running the IP services or IP base feature se t support only
input router ACLs for IPv6 management traffic.
•When configuring an ACL, there is no restriction on keywords entered in the ACL, regardless of
whether or not they are supported on the platform. When you apply the ACL to an interface that
requires hardware forwarding (physical ports or SVIs), the switch checks to determine whether or
not the ACL can be supported on the interface. If not, attaching the ACL is rejected.
•If an ACL is applied to an interface and you attempt to add an access control entry (ACE) with an
unsupported keyword, the switch does not allow the ACE to be added to the ACL that is currently
attached to the interface.
IPv6 ACLs and Switch Stacks
The stack master supports IPv6 ACLs in hardware and distributes the IPv6 ACLs to the stack members.
Note For full IPv6 functionality in a switch stack, all stack members must be running the advanced IP services
feature set. Switches running the IP services or IP base feature set support only input router IPv6 ACLs
for IPv6 management traffic.