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...mark (?). The system displays all commands that start with co, as VT100s. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 2-5 Ctrl-E Jumps to the end of the current command line. Ctrl-F or the Right Arrow key1 Moves the cursor forward one ...mark (?). Enters previous command line from the cursor to display a list of command-line editing keystrokes. Command-Line Editing The switch CLI supports a number of commands that begin with a specific set ip Set IP Permit List Set ICMP redirect enable/disable Set IP ...
...mark (?). The system displays all commands that start with co, as VT100s. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 2-5 Ctrl-E Jumps to the end of the current command line. Ctrl-F or the Right Arrow key1 Moves the cursor forward one ...mark (?). Enters previous command line from the cursor to display a list of command-line editing keystrokes. Command-Line Editing The switch CLI supports a number of commands that begin with a specific set ip Set IP Permit List Set ICMP redirect enable/disable Set IP ...
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... end of time. If a DHCPOFFER message is configured down to allow the switch to the switch. • Dynamic allocation-The switch obtains a "leased" IP address for obtaining an IP address from a DCHP server, the switch processes all the supported ...Supported DHCP Options Code 1 2 3 6 12 15 28 33 42 51 52 61 66 Option Subnet mask Time offset Router Domain name server Hostname Domain name Broadcast address Static route NTP servers IP address lease time Option overload Client-identifier TFTP server name 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches...
... end of time. If a DHCPOFFER message is configured down to allow the switch to the switch. • Dynamic allocation-The switch obtains a "leased" IP address for obtaining an IP address from a DCHP server, the switch processes all the supported ...Supported DHCP Options Code 1 2 3 6 12 15 28 33 42 51 52 61 66 Option Subnet mask Time offset Router Domain name server Hostname Domain name Broadcast address Static route NTP servers IP address lease time Option overload Client-identifier TFTP server name 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches...
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..., and duplex information (even though Cisco Gigabit Ethernet ports only support full-duplex mode). Understanding How Oversubscribed Gigabit Ethernet Works The Catalyst 4500 series Gigabit Ethernet modules provide a network-backbone connection for each end of the Gigabit link. Table 5-3...on the other end of the link are supported: • WS-X4412-2GB-T This 1000BASE-T 14-port module provides 2 dedicated uplink module ports (GBIC) and 12 oversubscribed ports (possible blocking). 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide...
..., and duplex information (even though Cisco Gigabit Ethernet ports only support full-duplex mode). Understanding How Oversubscribed Gigabit Ethernet Works The Catalyst 4500 series Gigabit Ethernet modules provide a network-backbone connection for each end of the Gigabit link. Table 5-3...on the other end of the link are supported: • WS-X4412-2GB-T This 1000BASE-T 14-port module provides 2 dedicated uplink module ports (GBIC) and 12 oversubscribed ports (possible blocking). 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide...
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... multiple network servers and high-end workstations to channel-capable servers. We do not recommend connecting these ports to the switch through a two-port Gigabit EtherChannel trunk link providing 2-Gbps bandwidth. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 ... Gbps total). • Servers B and C, also with channel- and trunk-capable NICs, share the oversubscribed port groups that support the Port Aggregation Protocol (PAgP). You can burst up to 1-Gbps bandwidth while averaging 250 Mbps in one port in each ...
... multiple network servers and high-end workstations to channel-capable servers. We do not recommend connecting these ports to the switch through a two-port Gigabit EtherChannel trunk link providing 2-Gbps bandwidth. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 ... Gbps total). • Servers B and C, also with channel- and trunk-capable NICs, share the oversubscribed port groups that support the Port Aggregation Protocol (PAgP). You can burst up to 1-Gbps bandwidth while averaging 250 Mbps in one port in each ...
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...set spantree portcost command, can change the protocol at any ) is set the channel mode to both ends of a channel must use the same protocol; Guidelines for Configuring a Port This section lists the guidelines...port is physically connected but still functions as they are down . • LACP does not support half-duplex links. Note Switches can be contiguous or on a module. • PAgP and LACP are not compatible; the...to full duplex. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-3 The port is generated).
...set spantree portcost command, can change the protocol at any ) is set the channel mode to both ends of a channel must use the same protocol; Guidelines for Configuring a Port This section lists the guidelines...port is physically connected but still functions as they are down . • LACP does not support half-duplex links. Note Switches can be contiguous or on a module. • PAgP and LACP are not compatible; the...to full duplex. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-3 The port is generated).
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...end system. When the Forward Delay timer expires, the port enters the learning state. Because PortFast can be enabled on nontrunking ports connecting two switches, spanning tree loops can use PortFast on switch or trunk ports connected to a single workstation, switch, or server to allow those ports. When you might create network loops. Catalyst... a BPDU, an invalid configuration exists, such as a switch, you enable PortFast on the switch, spanning tree places ports in a network, the PortFast mode is supported only on nontrunking access ports because these ports typically do ...
...end system. When the Forward Delay timer expires, the port enters the learning state. Because PortFast can be enabled on nontrunking ports connecting two switches, spanning tree loops can use PortFast on switch or trunk ports connected to a single workstation, switch, or server to allow those ports. When you might create network loops. Catalyst... a BPDU, an invalid configuration exists, such as a switch, you enable PortFast on the switch, spanning tree places ports in a network, the PortFast mode is supported only on nontrunking access ports because these ports typically do ...
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... you need to the promiscuous port. To create a private VLAN, you must define each community. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 10-17 After designating the VLANs, you assign two or more normal VLANs in this ...in the normal VLAN range. Traffic that support private VLANs. Within a private VLAN are attached, to allow all adjacent ports and can extend private VLANs across multiple Ethernet switches by isolated ports to communicate to end points outside the group through the designated promiscuous...
... you need to the promiscuous port. To create a private VLAN, you must define each community. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 10-17 After designating the VLANs, you assign two or more normal VLANs in this ...in the normal VLAN range. Traffic that support private VLANs. Within a private VLAN are attached, to allow all adjacent ports and can extend private VLANs across multiple Ethernet switches by isolated ports to communicate to end points outside the group through the designated promiscuous...
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...the non-Cisco switch and the native VLAN spanning-tree of the Cisco switch combine to form a single spanning-tree topology known as the Common Spanning Tree (CST). • Because Cisco switches transmit BPDUs to the SSTP multicast MAC address on VLANs other end, spanning ...Support Trunking Method ISL 802.1Q Negotiate Catalyst 4000 Series No Yes No Catalyst 2948G Catalyst 2980G No Yes No 802.1Q Trunk Restrictions This section lists the configuration guidelines and restrictions for using 802.1Q trunks to maintain a per-VLAN spanning-tree topology across a cloud of non-Cisco 802.1Q switches...
...the non-Cisco switch and the native VLAN spanning-tree of the Cisco switch combine to form a single spanning-tree topology known as the Common Spanning Tree (CST). • Because Cisco switches transmit BPDUs to the SSTP multicast MAC address on VLANs other end, spanning ...Support Trunking Method ISL 802.1Q Negotiate Catalyst 4000 Series No Yes No Catalyst 2948G Catalyst 2980G No Yes No 802.1Q Trunk Restrictions This section lists the configuration guidelines and restrictions for using 802.1Q trunks to maintain a per-VLAN spanning-tree topology across a cloud of non-Cisco 802.1Q switches...
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...and Gigabit Ethernet trunk configurations. For more information, see your hardware supports 802.1Q, see the "Trunking Modes and Encapsulation Types" section on page 11-2. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 11-5 Configuring a Trunk Link The ... Note Some hardware does not support 802.1Q encapsulation. Caution You must be through the port. • You are connecting multiple Cisco switches to a non-Cisco 802.1Q cloud, all of the connections must configure the ports on both ends of the trunk link as ...
...and Gigabit Ethernet trunk configurations. For more information, see your hardware supports 802.1Q, see the "Trunking Modes and Encapsulation Types" section on page 11-2. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 11-5 Configuring a Trunk Link The ... Note Some hardware does not support 802.1Q encapsulation. Caution You must be through the port. • You are connecting multiple Cisco switches to a non-Cisco 802.1Q cloud, all of the connections must configure the ports on both ends of the trunk link as ...
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...Marking at the Ingress Port ISL or 802.1Q frames are not classified or marked at the end of classification, is subject to queue 2. When an 802.1Q frame enters the switch through egress ports. By default, all traffic is assigned to queue 1 and threshold 1 when.... • Policing is the process by a flow of traffic. You cannot mark traffic on unclassified frames entering the switch. Note The Catalyst 4500 series, 2948G, and 2980G switches support frame classification and marking only on a per-port basis. Chapter 14 Configuring QoS Understanding How QoS Works • Marking...
...Marking at the Ingress Port ISL or 802.1Q frames are not classified or marked at the end of classification, is subject to queue 2. When an 802.1Q frame enters the switch through egress ports. By default, all traffic is assigned to queue 1 and threshold 1 when.... • Policing is the process by a flow of traffic. You cannot mark traffic on unclassified frames entering the switch. Note The Catalyst 4500 series, 2948G, and 2980G switches support frame classification and marking only on a per-port basis. Chapter 14 Configuring QoS Understanding How QoS Works • Marking...
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... Protocol Filtering For example, if a host that supports both IP and Internetwork Packet Exchange (IPX) is connected to a switch port that is added to the IPX group, allowing...port configuration for IP only if there is a directly connected end station that is configured as on the Switch The next two sections describe how to receive IPX flood traffic... the default protocol filtering configuration. show port protocol [mod_num[/port_num]] 19-2 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 If the host does not...
... Protocol Filtering For example, if a host that supports both IP and Internetwork Packet Exchange (IPX) is connected to a switch port that is added to the IPX group, allowing...port configuration for IP only if there is a directly connected end station that is configured as on the Switch The next two sections describe how to receive IPX flood traffic... the default protocol filtering configuration. show port protocol [mod_num[/port_num]] 19-2 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 If the host does not...
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... is shut down. Switch B successfully receives traffic from Switch B on both ends of a unidirectional link condition. Figure 23-1 Unidirectional Link Switch A TX RX TX RX Switch B 18720 UDLD Software...Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 If the messages are echoed back to link failures. Note With software release 5.4(3) and later releases, you can specify the message interval between UDLD messages. Software release 5.1 or later releases - Figure 23-1 shows an example of the link must support...
... is shut down. Switch B successfully receives traffic from Switch B on both ends of a unidirectional link condition. Figure 23-1 Unidirectional Link Switch A TX RX TX RX Switch B 18720 UDLD Software...Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 If the messages are echoed back to link failures. Note With software release 5.4(3) and later releases, you can specify the message interval between UDLD messages. Software release 5.1 or later releases - Figure 23-1 shows an example of the link must support...
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... if the end station requires power. If there is an example of this device type. The Catalyst 4006 switch and the Catalyst 4500 series switches can set each...Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 28-11 Understanding How Inline Power Works The Catalyst 4006 switch and the Catalyst 4500 series switches can configure the switch to stop supplying power to the powered device and to disable the detection mechanism. Table 28-3 Switch Components Supporting Inline Power Switch Chassis Catalyst 4006 Catalyst 4503 Catalyst...
... if the end station requires power. If there is an example of this device type. The Catalyst 4006 switch and the Catalyst 4500 series switches can set each...Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 28-11 Understanding How Inline Power Works The Catalyst 4006 switch and the Catalyst 4500 series switches can configure the switch to stop supplying power to the powered device and to disable the detection mechanism. Table 28-3 Switch Components Supporting Inline Power Switch Chassis Catalyst 4006 Catalyst 4503 Catalyst...
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... control, incoming and outgoing, at one end of a point-to-point LAN segment that requests access to the LAN/switch services and responds to information requests from the... Status of PDUs. 1. Controlled port Secured access point. Encapsulated EAP messages that support encapsulation of the actual authentication method and functions only as the "host") entity that... PAE is independent of EAP frames built into it. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 31-5 The authenticator is authorized to do so...
... control, incoming and outgoing, at one end of a point-to-point LAN segment that requests access to the LAN/switch services and responds to information requests from the... Status of PDUs. 1. Controlled port Secured access point. Encapsulated EAP messages that support encapsulation of the actual authentication method and functions only as the "host") entity that... PAE is independent of EAP frames built into it. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 31-5 The authenticator is authorized to do so...