Access Control
IPv4-based ACL Creation
Cisco 350XG & 550XG Series 10G Stackable Managed Switches
541
25
•
Destination MAC Address Value
—Enter the MAC address to which the
destination MAC address is to be matched and its mask (if relevant).
•
Destination MAC Wildcard Mask
—Enter the mask to define a range of MAC
addresses. Note that this mask is different than in other uses, such as subnet
mask. Here, setting a bit as
1
indicates don't care and
0
indicates to mask
that value.
NOTE
Given a mask of 0000 0000 0000 0000 0000 0000 1111 1111 (which
means that you match on the bits where there is 0 and don't match on the bits
where there are 1's). You need to translate the 1's to a decimal integer and you
write 0 for each four zeros. In this example since 1111 1111 = 255, the mask
would be written: as 0.0.0.255.
•
Source MAC Address
—Select
Any
if all source address are acceptable or
User defined
to enter a source address or range of source addresses.
•
Source MAC Address Value
—Enter the MAC address to which the source
MAC address is to be matched and its mask (if relevant).
•
Source MAC Wildcard Mask
—Enter the mask to define a range of MAC
addresses.
•
VLAN ID
—Enter the VLAN ID section of the VLAN tag to match.
•
802.1p
—Select
Include
to use 802.1p.
•
802.1p Value
—Enter the 802.1p value to be added to the VPT tag.
•
802.1p Mask
—Enter the wildcard mask to be applied to the VPT tag.
•
Ethertype
—Enter the frame Ethertype to be matched.
STEP 5
Click
Apply
. The MAC-based ACE is saved to the Running Configuration file.
IPv4-based ACL Creation
IPv4-based ACLs are used to check IPv4 packets, while other types of frames,
such as ARPs, are not checked.
The following fields can be matched:
•
IP protocol (by name for well-known protocols, or directly by value)
•
Source/destination ports for TCP/UDP traffic
