Cisco Catalyst 2950 Command Reference

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Catalyst 2950 and Catalyst 2955 Switch Command Reference
OL-10102-01
Chapter 2 Catalyst 2950 and 2955 Cisco IOS Commands
deny (MAC access-list configuration)
deny (MAC access-list configuration)
Use the deny MAC access-list configuration command to prevent Layer 2 traffic from being forwarded
if the conditions are matched. Use the no form of this command to remove a deny condition from the
MAC named access control list (ACL).
{permit | deny} {any | host src-MAC-addr} {any | host dst-MAC-addr} [aarp | amber | appletalk
| dec-spanning | decnet-iv | diagnostic | dsm | etype-6000 | etype-8042 | lat | lavc-sca |
mop-console | mop-dump | msdos | mumps | netbios | vines-echo |vines-ip | xns-idp]
no {permit | deny} {any | host src-MAC-addr} {any | host dst-MAC-addr} [aarp | amber |
appletalk | dec-spanning | decnet-iv | diagnostic | dsm | etype-6000 | etype-8042 | lat |
lavc-sca | mop-console | mop-dump | msdos | mumps | netbios | vines-echo |vines-ip |
xns-idp]
This command is available only if your switch is running the enhanced software image (EI).
Syntax Description any Keyword to deny any source or destination MAC address.
host src-MAC-addr Define a host MAC address. If the source address for a packet matches
the defined address, traffic from that address is denied. MAC
address-based subnets are not allowed.
host dst-MAC-addr Define a destination MAC address. If the destination address for a packet
matches the defined address, traffic to that address is denied. MAC
address-based subnets are not allowed.
aarp Select Ethertype AppleTalk Address Resolution Protocol that maps a
data-link address to a network address.
amber Select EtherType DEC-Amber.
appletalk Select EtherType AppleTalk/EtherTalk.
dec-spanning Select EtherType Digital Equipment Corporation (DEC) spanning tree.
decnet-iv Select EtherType DECnet Phase IV protocol.
diagnostic Select EtherType DEC-Diagnostic.
dsm Select EtherType DEC-DSM.
etype-6000 Select EtherType 0x6000.
etype-8042 Select EtherType 0x8042.
lat Select EtherType DEC-LAT.
lavc-sca Select EtherType DEC-LAVC-SCA.
mop-console Select EtherType DEC-MOP Remote Console.
mop-dump Select EtherType DEC-MOP Dump.
msdos Select EtherType DEC-MSDOS.
mumps Select EtherType DEC-MUMPS.
netbios Select EtherType DEC-Network Basic Input/Output System (NETBIOS).
vines-echo Select EtherType Virtual Integrated Network Service (VINES) Echo from
Banyan Systems.

Cisco Catalyst 2950 Specifications

General

Forwarding Bandwidth	8.8 Gbps
Switching Capacity	13.6 Gbps
Forwarding Rate	6.6 Mpps
Weight	3.6 kg
RAM	16 MB
Flash Memory	8 MB
Operating Humidity	10% to 85% non-condensing
Uplink Ports	2 x 10/100/1000Base-T
Dimensions	4.4 cm x 44.5 cm x 24.2 cm
Remote Management Protocol	SNMP, Telnet, HTTP
Features	Quality of Service (QoS), VLAN support
Compliant Standards	IEEE 802.3, IEEE 802.3u, IEEE 802.1D, IEEE 802.1Q, IEEE 802.1p
Status Indicators	system
Operating Temperature	0 to 45°C
Ports	24 x 10/100 Ethernet ports
MAC Address Table Size	8, 192 entries
Power Supply	Internal 100-240V AC, 50-60Hz