Cisco Catalyst 3750 User Manual

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Catalyst 3750 Switch Command Reference
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Chapter 2 Catalyst 3750 Switch Cisco IOS Commands
deny (MAC access-list configuration)
Usage Guidelines You enter MAC-access list configuration mode by using the mac access-list extended global
configuration command.
If you use the host keyword, you cannot enter an address mask; if you do not use the host keyword, you
must enter an address mask.
When an access control entry (ACE) is added to an access control list, an implied deny-any-any
condition exists at the end of the list. That is, if there are no matches, the packets are denied. However,
before the first ACE is added, the list permits all packets.
For more information about named MAC extended access lists, see the software configuration guide for
this release.
Examples This example shows how to define the named MAC extended access list to deny NETBIOS traffic from
any source to MAC address 00c0.00a0.03fa. Traffic matching this list is denied.
Switch(config-ext-macl)# deny any host 00c0.00a0.03fa netbios.
This example shows how to remove the deny condition from the named MAC extended access list:
Switch(config-ext-macl)# no deny any 00c0.00a0.03fa 0000.0000.0000 netbios.
This example denies all packets with Ethertype 0x4321:
Switch(config-ext-macl)# deny any any 0x4321 0
You can verify your settings by entering the show access-lists privileged EXEC command.
Related Commands Command Description
mac access-list extended Creates an access list based on MAC addresses for non-IP traffic.
permit (MAC access-list
configuration)
Permits non-IP traffic to be forwarded if conditions are matched.
show access-lists Displays access control lists configured on a switch.

Cisco Catalyst 3750 Specifications

General

Device Type	Switch
Switching Capacity	32 Gbps
Forwarding Rate	38.7 Mpps
Stacking Bandwidth	32 Gbps
RAM	128 MB
Jumbo Frame Support	Yes
Switch Type	Managed
Model	Catalyst 3750 Series
Uplink Interfaces	SFP
Form Factor	Rack-mountable
MAC Address Table Size	12, 000 entries
Routing Protocol	RIP, OSPF, EIGRP
Remote Management Protocol	SNMP, Telnet, HTTP
Features	Layer 3 switching, Layer 2 switching, auto-negotiation, BOOTP support, ARP support, VLAN support, auto-uplink (auto MDI/MDI-X), IGMP snooping, traffic shaping, MAC address filtering, Quality of Service (QoS), Jumbo Frames support, MLD snooping, Dynamic ARP Inspection (DAI), Cisco EnergyWise technology
Power over Ethernet (PoE)	PoE
Operating Temperature	-5 - 45 °C
Operating Humidity	10% to 85% non-condensing