Gigabit Ethernet Ipv6-Acl Guidelines - Cisco MDS 9000 series Configuration Manual

Gigabit Ethernet IPv6-ACL Guidelines

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Gigabit Ethernet IPv6-ACL Guidelines
If IPv6-ACLs are already configured in a Gigabit Ethernet interface, you cannot add this interface to a
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Ethernet PortChannel group. See the Cisco MDS 9000 Family NX-OS Security Configuration Guide for
information on configuring IPv6-ACLs.
Follow these guidelines when configuring IPv6-ACLs for Gigabit Ethernet interfaces:
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See the Cisco MDS 9000 Family NX-OS Security Configuration Guide for information on applying
IPv6-ACLs to an interface.
Cisco MDS 9000 Family NX-OS IP Services Configuration Guide
8-25
3000:8::/64
via fe80::205:30ff:fe01:7ed7, GigabitEthernet4/2.250
3000:9::/64
via fe80::213:1aff:fee5:e69e, port-channel 3
3000:10::/64
via fe80::213:1aff:fee5:e69e, port-channel 3.250
5000:1::/64
via fe80::205:30ff:fe01:3917, GigabitEthernet6/2
5000:1::/64
via fe80::205:30ff:fe01:3918, port-channel 4
6000:1:1:1::/64
via fe80::205:30ff:fe01:3916, GigabitEthernet6/1
7000:1::/64
via fe80::205:30ff:fe01:3917, GigabitEthernet6/2.250
7000:1::/64
via fe80::205:30ff:fe01:3918, port-channel 4.250
7000:1:1:1::/64
via fe80::205:30ff:fe01:3917, GigabitEthernet6/2, distance 2
fe80::/10
via ::
ff00::/8
via ::
Only use Transmission Control Protocol (TCP) or Internet Control Message Protocol (ICMP).
Other protocols such as User Datagram Protocol (UDP) and HTTP are not supported in
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Gigabit Ethernet interfaces. Applying an ACL that contains rules for these protocols to a
Gigabit Ethernet interface is allowed but those rules have no effect.
Apply IPv6-ACLs to the interface before you enable an interface. This ensures that the filters are in
place before traffic starts flowing.
Be aware of the following conditions:
If you use the log-deny option, a maximum of 50 messages are logged per second.
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The established option is ignored when you apply IPv6-ACLs containing this option to Gigabit
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Ethernet interfaces.
If an IPv6-ACL rule applies to a preexisting TCP connection, that rule is ignored. For example,
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if there is an existing TCP connection between A and B and an IPv6-ACL that specifies
dropping all packets whose source is A and destination is B is subsequently applied, it will have
no effect.
Chapter 8 Configuring IPv6 for Gigabit Ethernet Interfaces
OL-19525-01,Cisco MDS NX-OS Release 4.2(1)