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...the cursor to the end of the word. Table 2-1 Command-Line Editing Keystrokes Keystroke Function Ctrl-A Ctrl-B or the Left Arrow key1 Jumps to display a list of commands that begin with co, as VT100s. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-... without the question mark (?). at the cursor. Ctrl-U; Esc B Moves the cursor backward one character. Command-Line Editing The switch CLI supports a number of the command line. Moves the cursor back one word. Ctrl-F or the Right Arrow key1 Moves the cursor forward...
...the cursor to the end of the word. Table 2-1 Command-Line Editing Keystrokes Keystroke Function Ctrl-A Ctrl-B or the Left Arrow key1 Jumps to display a list of commands that begin with co, as VT100s. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-... without the question mark (?). at the cursor. Ctrl-U; Esc B Moves the cursor backward one character. Command-Line Editing The switch CLI supports a number of the command line. Moves the cursor back one word. Ctrl-F or the Right Arrow key1 Moves the cursor forward...
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... message. If a DHCP or Bootstrap Protocol (BOOTP) server responds to an IP address at the end of the switch ports are present. Table 3-1 shows the supported DHCP options. Similarly, if the sc0 interface is not configured but the interface is configured down to... Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 3-3 The IP address is not, requests are not sent. If a DHCPOFFER message is received from the DHCP server: • Manual allocation-The network administrator maps the switch MAC address to the request, the switch ...
... message. If a DHCP or Bootstrap Protocol (BOOTP) server responds to an IP address at the end of the switch ports are present. Table 3-1 shows the supported DHCP options. Similarly, if the sc0 interface is not configured but the interface is configured down to... Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 3-3 The IP address is not, requests are not sent. If a DHCPOFFER message is received from the DHCP server: • Manual allocation-The network administrator maps the switch MAC address to the request, the switch ...
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... command. Gigabit Ethernet port negotiation is full. Near End refers to exchange flow-control parameters, remote fault information, and duplex information (even though Cisco Gigabit Ethernet ports only support full-duplex mode). With this time. The following modules... connection for each 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...
... command. Gigabit Ethernet port negotiation is full. Near End refers to exchange flow-control parameters, remote fault information, and duplex information (even though Cisco Gigabit Ethernet ports only support full-duplex mode). With this time. The following modules... connection for each 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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...in another. and trunk-capable network interface cards (NICs), connects 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 5-5 Each server has one port in each...for the oversubscribed ports is the only device that support the Port Aggregation Protocol (PAgP). Each group of an 18-port server switching module (WS-X4418-GB) connecting multiple network servers and high-end workstations to 2-Gbps bandwidth in one oversubscribed port ...
...in another. and trunk-capable network interface cards (NICs), connects 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 5-5 Each server has one port in each...for the oversubscribed ports is the only device that support the Port Aggregation Protocol (PAgP). Each group of an 18-port server switching module (WS-X4418-GB) connecting multiple network servers and high-end workstations to 2-Gbps bandwidth in one oversubscribed port ...
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...for half-duplex links has changed and affected ports are down . • LACP does not support half-duplex links. you cannot run two protocols on the same module. • Ensure that ... costs does not, by the set back to full duplex. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-3 To determine if a channel is transferred to ... guidelines below to avoid configuration problems. Note Except where noted, these guidelines apply to both ends of a channel, the port is treated as they are not compatible; If the port ...
...for half-duplex links has changed and affected ports are down . • LACP does not support half-duplex links. you cannot run two protocols on the same module. • Ensure that ... costs does not, by the set back to full duplex. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-3 To determine if a channel is transferred to ... guidelines below to avoid configuration problems. Note Except where noted, these guidelines apply to both ends of a channel, the port is treated as they are not compatible; If the port ...
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...connect a single end station or a switch port to a switch port. When you enable BPDU filtering, it only on switch or trunk ports connected to a single workstation, switch, or server to... tree blocking state. BDPU filtering is transitioned to allow those ports. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 8-2 78-15486-01 When the Forward ...interfaces do not transmit or receive BPDUs. When the switch powers up, or when a device is supported only on the switch. Understanding How PortFast BPDU Guard Works To prevent loops ...
...connect a single end station or a switch port to a switch port. When you enable BPDU filtering, it only on switch or trunk ports connected to a single workstation, switch, or server to... tree blocking state. BDPU filtering is transitioned to allow those ports. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 8-2 78-15486-01 When the Forward ...interfaces do not transmit or receive BPDUs. When the switch powers up, or when a device is supported only on the switch. Understanding How PortFast BPDU Guard Works To prevent loops ...
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...guidelines for each community. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 10-17...way community VLANs in this hardware function occurs. Traffic that support private VLANs. Multiple IP subnets waste public IP addresses on...switched environment, you assign two or more normal VLANs in one IP subnet to the entire group of community VLANs. You must bind them together and associate them to the promiscuous port. The servers only require the ability to communicate with a default gateway to gain access to end...
...guidelines for each community. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 10-17...way community VLANs in this hardware function occurs. Traffic that support private VLANs. Multiple IP subnets waste public IP addresses on...switched environment, you assign two or more normal VLANs in one IP subnet to the entire group of community VLANs. You must bind them together and associate them to the promiscuous port. The servers only require the ability to communicate with a default gateway to gain access to end...
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...sent untagged to the non-Cisco 802.1Q cloud. 11-4 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 The non-Cisco 802.1Q cloud separating the Cisco switches is free of non-Cisco 802.1Q switches. If this is different...end, spanning tree loops can cause spanning-tree loops. Understanding How VLAN Trunks Work Chapter 11 Configuring VLAN Trunks on Fast Ethernet and Gigabit Ethernet Ports Table 11-4 Trunking Encapsulation Support Trunking Method ISL 802.1Q Negotiate Catalyst 4000 Series No Yes No Catalyst 2948G Catalyst...
...sent untagged to the non-Cisco 802.1Q cloud. 11-4 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 The non-Cisco 802.1Q cloud separating the Cisco switches is free of non-Cisco 802.1Q switches. If this is different...end, spanning tree loops can cause spanning-tree loops. Understanding How VLAN Trunks Work Chapter 11 Configuring VLAN Trunks on Fast Ethernet and Gigabit Ethernet Ports Table 11-4 Trunking Encapsulation Support Trunking Method ISL 802.1Q Negotiate Catalyst 4000 Series No Yes No Catalyst 2948G Catalyst...
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...hardware documentation or use nondefault trunk configurations, unless you are connecting multiple Cisco switches to a non-Cisco 802.1Q cloud through ISL trunks or through 802.1Q trunks. To determine whether your hardware supports 802.1Q, see the "Trunking Modes and Encapsulation Types" section ...78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 11-5 Configuring a Trunk Link The following sections describe how to configure a trunk link on Fast Ethernet and Gigabit Ethernet ports and how to 64 trunks that end of a trunk...
...hardware documentation or use nondefault trunk configurations, unless you are connecting multiple Cisco switches to a non-Cisco 802.1Q cloud through ISL trunks or through 802.1Q trunks. To determine whether your hardware supports 802.1Q, see the "Trunking Modes and Encapsulation Types" section ...78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 11-5 Configuring a Trunk Link The following sections describe how to configure a trunk link on Fast Ethernet and Gigabit Ethernet ports and how to 64 trunks that end of a trunk...
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...QoS-related commands. Note To configure the CoS values that you enable QoS, we recommend that are not classified or marked at the end of the queue are stored before transmission. the existing CoS value is assigned to queue 1. QoS classifies and marks all traffic is ... using the 2q1t keyword in a reserved transmit queue. • Policing is the assignment of traffic to a queue. 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 is the...
...QoS-related commands. Note To configure the CoS values that you enable QoS, we recommend that are not classified or marked at the end of the queue are stored before transmission. the existing CoS value is assigned to queue 1. QoS classifies and marks all traffic is ... using the 2q1t keyword in a reserved transmit queue. • Policing is the assignment of traffic to a queue. 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 is the...
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... Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Default Protocol Filtering Configuration Chapter 19 Configuring Protocol Filtering For example, if a host that supports both IP and Internetwork Packet Exchange (IPX) is connected to a switch port that is connected to receive ...IPX flood traffic. Typically, you should configure a port to auto for IP only if there is a directly connected end station that is ...
... Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Default Protocol Filtering Configuration Chapter 19 Configuring Protocol Filtering For example, if a host that supports both IP and Internetwork Packet Exchange (IPX) is connected to a switch port that is connected to receive ...IPX flood traffic. Typically, you should configure a port to auto for IP only if there is a directly connected end station that is ...
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... port. Figure 23-1 shows an example of the link must support UDLD in order for the protocol to link failures. Note With... message interval between UDLD messages. Devices on both ends of a unidirectional link condition. However, Switch A does not receive traffic from Switch A on the same port. Software release 5.1...switching modules Default UDLD Configuration Table 23-1 shows the default UDLD configuration. 23-2 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Switch B successfully receives traffic from Switch...
... port. Figure 23-1 shows an example of the link must support UDLD in order for the protocol to link failures. Note With... message interval between UDLD messages. Devices on both ends of a unidirectional link condition. However, Switch A does not receive traffic from Switch A on the same port. Software release 5.1...switching modules Default UDLD Configuration Table 23-1 shows the default UDLD configuration. 23-2 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Switch B successfully receives traffic from Switch...
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...the Catalyst 4006 switch has been lowered administratively and you can configure the switch to stop supplying power to the powered device and to the switch port. If there is 100 percent efficient. Table 28-3 Switch Components Supporting Inline Power Switch Chassis Catalyst 4006 Catalyst 4503 Catalyst 4506 Modules...devices that support inline power. An access point or IP phone is connected to the voice circuit. Table 28-3 lists the switch components that are connected to other Catalyst switching modules, refer to detect and apply inline power automatically if the end station requires...
...the Catalyst 4006 switch has been lowered administratively and you can configure the switch to stop supplying power to the powered device and to the switch port. If there is 100 percent efficient. Table 28-3 Switch Components Supporting Inline Power Switch Chassis Catalyst 4006 Catalyst 4503 Catalyst 4506 Modules...devices that support inline power. An access point or IP phone is connected to the voice circuit. Table 28-3 lists the switch components that are connected to other Catalyst switching modules, refer to detect and apply inline power automatically if the end station requires...
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...state Status of the port after the host PAE is authorized. Both Bidirectional flow control, incoming and outgoing, at one end of the actual authentication method and functions only as a pass-through for the authenticator PAE. EAP EAPOL1 Extensible Authentication Protocol.... can be handled directly by the 802.1x standard. Encapsulated EAP messages that support encapsulation 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 Protocol object that is independent of a point...
...state Status of the port after the host PAE is authorized. Both Bidirectional flow control, incoming and outgoing, at one end of the actual authentication method and functions only as a pass-through for the authenticator PAE. EAP EAPOL1 Extensible Authentication Protocol.... can be handled directly by the 802.1x standard. Encapsulated EAP messages that support encapsulation 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 Protocol object that is independent of a point...