44 Access Control List Commands

e.g., in a hop-by-hop option. A flow is uniquely identified by the combination of a source address and a non-zero flow label. Packets that do not belong to a flow carry a flow label of zero.

Optional internet-layer information is encoded in separate headers that may be placed between the IPv6 header and the upper-layer header in a packet. There are a small number of such extension headers, each identified by a distinct Next Header value. IPv6 supports the values defined for the IPv4 Protocol field in RFC 1700, including these commonly used headers:

0

:

Hop-by-Hop Options

(RFC 2460)

6

:

TCP Upper-layer Header

(RFC 1700)

17

:

UDP Upper-layer Header

(RFC 1700)

43

:

Routing

(RFC 2460)

44

:

Fragment

(RFC 2460)

51

:

Authentication

(RFC 2402)

50

:

Encapsulating Security Payload

(RFC 2406)

60

:

Destination Options

(RFC 2460)

Example

This example accepts any incoming packets if the destination address is 2009:DB9:2229::79/48.

Console(config-ext-ipv6-acl)#permit 2009:DB9:2229::79/48 Console(config-ext-ipv6-acl)#

This allows packets to any destination address when the DSCP value is 5.

Console(config-ext-ipv6-acl)#permit any dscp 5

Console(config-ext-ipv6-acl)#

This allows any packets sent to the destination 2009:DB9:2229::79/48 when the flow label is 43.”

Console(config-ext-ipv6-acl)#permit 2009:DB9:2229::79/48 flow-label 43 Console(config-ext-ipv6-acl)#

Related Commands

access-list ipv6 (44-7)

show ipv6 access-list

This command displays the rules for configured IPv6 ACLs.

Syntax

show ip access-list {standard extended} [acl_name]

standard – Specifies a standard IPv6 ACL.

extended – Specifies an extended IPv6 ACL.

acl_name – Name of the ACL. (Maximum length: 16 characters)

44-10

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Accton Technology 24/48-Port, ES4548D manual Show ipv6 access-list, This command displays the rules for configured IPv6 ACLs