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...Gigabit Ethernet Switching 5-1 Understanding How Gigabit Ethernet Works 5-1 Understanding How Gigabit Ethernet Flow Control Works 5-1 Understanding How Port Negotiation Works 5-3 Understanding How Oversubscribed Gigabit Ethernet Works 5-4 Default Gigabit Ethernet Configuration 5-6 Configuring Gigabit Ethernet Ports 5-7 Assigning Gigabit Ethernet Port Names 5-7 Configuring Gigabit Ethernet Port Priority Levels 5-8 Configuring Flow Control on Gigabit...Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX 78-15908-01 v
...Gigabit Ethernet Switching 5-1 Understanding How Gigabit Ethernet Works 5-1 Understanding How Gigabit Ethernet Flow Control Works 5-1 Understanding How Port Negotiation Works 5-3 Understanding How Oversubscribed Gigabit Ethernet Works 5-4 Default Gigabit Ethernet Configuration 5-6 Configuring Gigabit Ethernet Ports 5-7 Assigning Gigabit Ethernet Port Names 5-7 Configuring Gigabit Ethernet Port Priority Levels 5-8 Configuring Flow Control on Gigabit...Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX 78-15908-01 v
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Contents EtherChannel Configuration Examples 6-12 Configuration Example of a Four-Port Fast EtherChannel 6-12 Configuration Example of a Two-Port Gigabit EtherChannel 6-14 Understanding LACP 6-16 LACP Modes 6-16 LACP Parameters 6-17 Configuring EtherChannel Using LACP 6-18 Specifying the EtherChannel Protocol 6-18 ... How MST Works 7-14 Rapid Spanning Tree Protocol 7-16 MST-to-SST Interoperability 7-17 Common Spanning Tree 7-18 MST Instances 7-18 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX vi 78-15908-01
Contents EtherChannel Configuration Examples 6-12 Configuration Example of a Four-Port Fast EtherChannel 6-12 Configuration Example of a Two-Port Gigabit EtherChannel 6-14 Understanding LACP 6-16 LACP Modes 6-16 LACP Parameters 6-17 Configuring EtherChannel Using LACP 6-18 Specifying the EtherChannel Protocol 6-18 ... How MST Works 7-14 Rapid Spanning Tree Protocol 7-16 MST-to-SST Interoperability 7-17 Common Spanning Tree 7-18 MST Instances 7-18 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX vi 78-15908-01
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... on a Trunk 11-6 Disabling a Trunk Port 11-7 Disabling VLAN 1 on a Trunk Link 11-8 Example VLAN Trunk Configurations 11-9 802.1Q Trunk over a Gigabit EtherChannel Link Example 11-9 Load-Sharing VLAN Traffic over Parallel Trunks Example 11-13 802.1Q Nonegotiate Trunk Configuration Example 11-19 12 C H A P T E... Configuring VMPS 12-4 Creating the VMPS Database 12-4 Configuring the VMPS Server 12-7 Configuring VMPS Clients 12-7 Monitoring VMPS 12-9 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX x 78-15908-01
... on a Trunk 11-6 Disabling a Trunk Port 11-7 Disabling VLAN 1 on a Trunk Link 11-8 Example VLAN Trunk Configurations 11-9 802.1Q Trunk over a Gigabit EtherChannel Link Example 11-9 Load-Sharing VLAN Traffic over Parallel Trunks Example 11-13 802.1Q Nonegotiate Trunk Configuration Example 11-19 12 C H A P T E... Configuring VMPS 12-4 Creating the VMPS Database 12-4 Configuring the VMPS Server 12-7 Configuring VMPS Clients 12-7 Monitoring VMPS 12-9 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX x 78-15908-01
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..., and Loop Guard Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX 78-15908-01 xxv Using the Command-Line Interface Describes how to configure the spanning tree PortFast, BPDU Guard, BPDU PortFast, UplinkFast, and BackboneFast features. Configuring Fast EtherChannel Describes how to configure Gigabit Ethernet switching on the switch. Organization This publication...
..., and Loop Guard Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX 78-15908-01 xxv Using the Command-Line Interface Describes how to configure the spanning tree PortFast, BPDU Guard, BPDU PortFast, UplinkFast, and BackboneFast features. Configuring Fast EtherChannel Describes how to configure Gigabit Ethernet switching on the switch. Organization This publication...
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...Gigabit Ethernet ports. Configuring VLAN Trunks on Fast Ethernet and Gigabit Ethernet Ports Describes how to configure Cisco Discovery Protocol (CDP) on the switch. Configuring Dynamic VLAN Membership with VMPS Describes how to generate switch TopN reports on the switch. Using Switch...Describes how to configure IP permit list on the switch. Configuring the IP Permit List Describes how to configure quality of service (QoS). xxvi Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX 78-15908-01 ...
...Gigabit Ethernet ports. Configuring VLAN Trunks on Fast Ethernet and Gigabit Ethernet Ports Describes how to configure Cisco Discovery Protocol (CDP) on the switch. Configuring Dynamic VLAN Membership with VMPS Describes how to generate switch TopN reports on the switch. Using Switch...Describes how to configure IP permit list on the switch. Configuring the IP Permit List Describes how to configure quality of service (QoS). xxvi Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX 78-15908-01 ...
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... Catalyst 2948G switch. Table 1-2 Catalyst 2948G Switch Product Number WS-C2948G Chassis Description Catalyst 2948G • Fixed-configuration switch • 12-Gbps backplane • Optional redundant power supplies • Two 1000BASE-X (GBIC) Gigabit Ethernet ports • 48 10/100BASE-TX Fast Ethernet ports Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX 1-2 78-15908-01 Catalyst 2948G Switch Chapter 1 Product Overview Table 1-1 Catalyst 4000 and 4500 Series Switch...
... Catalyst 2948G switch. Table 1-2 Catalyst 2948G Switch Product Number WS-C2948G Chassis Description Catalyst 2948G • Fixed-configuration switch • 12-Gbps backplane • Optional redundant power supplies • Two 1000BASE-X (GBIC) Gigabit Ethernet ports • 48 10/100BASE-TX Fast Ethernet ports Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX 1-2 78-15908-01 Catalyst 2948G Switch Chapter 1 Product Overview Table 1-1 Catalyst 4000 and 4500 Series Switch...
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... 1-3 Catalyst 2948G Switch Product Number WS-C2948G-GE-TX Chassis Description Catalyst 2948G-GE-TX • Fixed-configuration switch • Optional redundant power supplies • Four 1000BASE-X (SFP) Gigabit Ethernet ports • 48 10/100/1000 BASE-TX Gigabit Ethernet ports Catalyst 2980G Switch Note For installation information and a complete description of the Catalyst 2948G-GE-TX switch hardware, refer to the Catalyst 2948G, 2948G-GE-TX, and 2980G Installation Guide. Table 1-3 describes the Catalyst 2948G-GE-TX switch. Table 1-4 Catalyst 2980G Switch Product...
... 1-3 Catalyst 2948G Switch Product Number WS-C2948G-GE-TX Chassis Description Catalyst 2948G-GE-TX • Fixed-configuration switch • Optional redundant power supplies • Four 1000BASE-X (SFP) Gigabit Ethernet ports • 48 10/100/1000 BASE-TX Gigabit Ethernet ports Catalyst 2980G Switch Note For installation information and a complete description of the Catalyst 2948G-GE-TX switch hardware, refer to the Catalyst 2948G, 2948G-GE-TX, and 2980G Installation Guide. Table 1-3 describes the Catalyst 2948G-GE-TX switch. Table 1-4 Catalyst 2980G Switch Product...
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... at the same time. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX 4-2 78-15908-01 Switching Frames Between Segments Each Ethernet port on the switch can either receive or transmit. To switch frames between ports efficiently, the switch maintains an address table. To reduce degradation, the Catalyst enterprise LAN switches treat each Ethernet port on...
... at the same time. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX 4-2 78-15908-01 Switching Frames Between Segments Each Ethernet port on the switch can either receive or transmit. To switch frames between ports efficiently, the switch maintains an address table. To reduce degradation, the Catalyst enterprise LAN switches treat each Ethernet port on...
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...Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX 78-15908-01 4-3 Setting Ethernet and Fast Ethernet Port Names You can assign names to the ports on configuring Fast EtherChannel, see Chapter 6, "Configuring Fast EtherChannel and Gigabit ... mode) Configuring Ethernet and Fast Ethernet Ports These sections describe how to configure Ethernet and Fast Ethernet switching ports on the Catalyst enterprise LAN switches: • Setting Ethernet and Fast Ethernet Port Names, page 4-3 • Setting Ethernet and Fast...
...Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX 78-15908-01 4-3 Setting Ethernet and Fast Ethernet Port Names You can assign names to the ports on configuring Fast EtherChannel, see Chapter 6, "Configuring Fast EtherChannel and Gigabit ... mode) Configuring Ethernet and Fast Ethernet Ports These sections describe how to configure Ethernet and Fast Ethernet switching ports on the Catalyst enterprise LAN switches: • Setting Ethernet and Fast Ethernet Port Names, page 4-3 • Setting Ethernet and Fast...
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...this task in notification can set the port debounce timer on a per-port basis for Ethernet, Fast Ethernet, and Gigabit Ethernet ports. Table 4-2 lists the time delay that the port is configured correctly. Use with caution. Configuring Ethernet and...perform this delay in privileged mode: Task Step 1 Enable the debounce timer for a port. Console> (enable) Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX 4-6 78-15908-01 This situation might affect the convergence/reconvergence of data traffic ...
...this task in notification can set the port debounce timer on a per-port basis for Ethernet, Fast Ethernet, and Gigabit Ethernet ports. Table 4-2 lists the time delay that the port is configured correctly. Use with caution. Configuring Ethernet and...perform this delay in privileged mode: Task Step 1 Enable the debounce timer for a port. Console> (enable) Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX 4-6 78-15908-01 This situation might affect the convergence/reconvergence of data traffic ...
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... Gigabit Ethernet switching on the Catalyst enterprise LAN switches. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX 78-15908-01 5-1 The configuration procedures in this chapter apply to other devices. If a buffer on the supervisor engine. Table 5-1 identifies the Catalyst Gigabit Ethernet switches, modules, and ports that Gigabit Ethernet ports use to the Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches...
... Gigabit Ethernet switching on the Catalyst enterprise LAN switches. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX 78-15908-01 5-1 The configuration procedures in this chapter apply to other devices. If a buffer on the supervisor engine. Table 5-1 identifies the Catalyst Gigabit Ethernet switches, modules, and ports that Gigabit Ethernet ports use to the Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches...
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... Gigabit Ethernet Switching Table 5-1 Send Capability by Switch Type, Module, and Ports Switch Type Catalyst 4000 Catalyst 4500 Catalyst 4000 Catalyst 4500 Catalyst 4000 Catalyst 4500 Catalyst 4000 Catalyst 4500 Catalyst 4000 Catalyst 4500 Catalyst 4000 Catalyst 4500 Catalyst 4000 Catalyst 4500 Catalyst 4000 Catalyst 4500 Catalyst 2948G Catalyst 2948G-GE-TX Catalyst 2980G Module All modules except WS-X4418-GB and WS-X4412-2GB-T WS-X4418-GB WS-X4418-GB WS-X4412-2GB-T WS-X4412-2GB-T WS-X4424-GB-RJ45 WS-X4448-GB-RJ45 WS...
... Gigabit Ethernet Switching Table 5-1 Send Capability by Switch Type, Module, and Ports Switch Type Catalyst 4000 Catalyst 4500 Catalyst 4000 Catalyst 4500 Catalyst 4000 Catalyst 4500 Catalyst 4000 Catalyst 4500 Catalyst 4000 Catalyst 4500 Catalyst 4000 Catalyst 4500 Catalyst 4000 Catalyst 4500 Catalyst 4000 Catalyst 4500 Catalyst 2948G Catalyst 2948G-GE-TX Catalyst 2980G Module All modules except WS-X4418-GB and WS-X4412-2GB-T WS-X4418-GB WS-X4418-GB WS-X4412-2GB-T WS-X4412-2GB-T WS-X4424-GB-RJ45 WS-X4448-GB-RJ45 WS...
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... remote fault information, and duplex information (even though Cisco Gigabit Ethernet ports only support full-duplex mode). Table 5-3 shows the four possible port negotiation configurations for a Gigabit Ethernet link and the resulting link status for each ...Up Note On 1000BASE-T Gigabit Ethernet ports, you cannot configure speed or duplex mode. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX 78-15908-01 5-3 Chapter 5 Configuring Gigabit Ethernet Switching Understanding How Gigabit Ethernet Works Table 5-2 ...
... remote fault information, and duplex information (even though Cisco Gigabit Ethernet ports only support full-duplex mode). Table 5-3 shows the four possible port negotiation configurations for a Gigabit Ethernet link and the resulting link status for each ...Up Note On 1000BASE-T Gigabit Ethernet ports, you cannot configure speed or duplex mode. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX 78-15908-01 5-3 Chapter 5 Configuring Gigabit Ethernet Switching Understanding How Gigabit Ethernet Works Table 5-2 ...
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... oversubscribed ports (possible blocking). • WS-X4448-LX This Gigabit Ethernet optical line terminator module provides 48 oversubscribed ports (possible blocking). Table 5-4 lists the uplink module port IDs for module WS-4418-2GB. Each group of four ports shares 1 Gbps of four ports each. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX...
... oversubscribed ports (possible blocking). • WS-X4448-LX This Gigabit Ethernet optical line terminator module provides 48 oversubscribed ports (possible blocking). Table 5-4 lists the uplink module port IDs for module WS-4418-2GB. Each group of four ports shares 1 Gbps of four ports each. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX...
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... only device that are grouped for module WS-X4448-GB-RJ45. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX 78-15908-01 5-5 Two ports are in one oversubscribed port group. Chapter 5 Configuring Gigabit Ethernet Switching Understanding How Gigabit Ethernet Works Table 5-7 Oversubscribed Port Groupings for Module WS-X4424-GB-RJ45 1, 2, 3, 4 5, 6, 7, 8 9, 10, 11, 12 13...
... only device that are grouped for module WS-X4448-GB-RJ45. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX 78-15908-01 5-5 Two ports are in one oversubscribed port group. Chapter 5 Configuring Gigabit Ethernet Switching Understanding How Gigabit Ethernet Works Table 5-7 Oversubscribed Port Groupings for Module WS-X4424-GB-RJ45 1, 2, 3, 4 5, 6, 7, 8 9, 10, 11, 12 13...
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...; Oversubscribed Gigabit Ethernet ports (ports 3-18 on WS-X4418-GB): Flow control set to desired for receive (Rx) and on for transmit (Tx) • All others: Flow control set to off for receive (Rx) and desired for transmit (Tx) Port negotiation Enabled Spanning Tree Protocol Enabled for VLAN 1 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration...
...; Oversubscribed Gigabit Ethernet ports (ports 3-18 on WS-X4418-GB): Flow control set to desired for receive (Rx) and on for transmit (Tx) • All others: Flow control set to off for receive (Rx) and desired for transmit (Tx) Port negotiation Enabled Spanning Tree Protocol Enabled for VLAN 1 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration...
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To assign a name to a port, perform this task in privileged mode: Step 1 Step 2 Task Assign a name to configure Gigabit Ethernet switching ports on the Catalyst enterprise LAN switches. Verify that the port names are configured correctly: Console> (enable) set port name 2/1 Backbone Connection Port 2/1 name set. Console... notconnect 1 normal full 1000 1000BASESX Last-Time-Cleared Tue Dec 22 1998, 13:42:04 Console> (enable) Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX 78-15908-01 5-7
To assign a name to a port, perform this task in privileged mode: Step 1 Step 2 Task Assign a name to configure Gigabit Ethernet switching ports on the Catalyst enterprise LAN switches. Verify that the port names are configured correctly: Console> (enable) set port name 2/1 Backbone Connection Port 2/1 name set. Console... notconnect 1 normal full 1000 1000BASESX Last-Time-Cleared Tue Dec 22 1998, 13:42:04 Console> (enable) Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX 78-15908-01 5-7
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... Console> (enable) Configuring Flow Control on Gigabit Ethernet Ports To configure flow control on a Gigabit Ethernet port, perform this task in privileged mode: Step 1 Step 2 Task Command Configure the priority level for each port. mod_num/port_num {off | on RxPause TxPause Unsupported opcodes 0 0 0 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX 5-8 78...
... Console> (enable) Configuring Flow Control on Gigabit Ethernet Ports To configure flow control on a Gigabit Ethernet port, perform this task in privileged mode: Step 1 Step 2 Task Command Configure the priority level for each port. mod_num/port_num {off | on RxPause TxPause Unsupported opcodes 0 0 0 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX 5-8 78...
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... in privileged mode: Step 1 Step 2 Task Disable Gigabit Ethernet port negotiation. To enable port negotiation on a 1000BASE-X Gigabit Ethernet port, perform this release. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX 78-15908-01 5-9 Chapter 5 Configuring Gigabit Ethernet Switching Configuring Gigabit Ethernet Ports Enabling Port Negotiation on Gigabit Ethernet Ports Note You cannot enable port...
... in privileged mode: Step 1 Step 2 Task Disable Gigabit Ethernet port negotiation. To enable port negotiation on a 1000BASE-X Gigabit Ethernet port, perform this release. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX 78-15908-01 5-9 Chapter 5 Configuring Gigabit Ethernet Switching Configuring Gigabit Ethernet Ports Enabling Port Negotiation on Gigabit Ethernet Ports Note You cannot enable port...
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...(173.16.1.201) 6 ms 3 ms 3 ms 4 somehost.company.com (10.1.2.3) 3 ms * 2 ms Console> (enable) 5-10 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX 78-15908-01 Trace the hop-by -hop path of packets from the... how to ping a remote host and how to test. Configuring Gigabit Ethernet Ports Chapter 5 Configuring Gigabit Ethernet Switching Checking Gigabit Ethernet Port Connectivity Note For more detailed information on the switch. show interface default gateway that you ping [-s] host [packet_size]...
...(173.16.1.201) 6 ms 3 ms 3 ms 4 somehost.company.com (10.1.2.3) 3 ms * 2 ms Console> (enable) 5-10 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2948G-GE-TX, and Catalyst 2980G Switches Software Configuration Guide-Release 8.2GLX 78-15908-01 Trace the hop-by -hop path of packets from the... how to ping a remote host and how to test. Configuring Gigabit Ethernet Ports Chapter 5 Configuring Gigabit Ethernet Switching Checking Gigabit Ethernet Port Connectivity Note For more detailed information on the switch. show interface default gateway that you ping [-s] host [packet_size]...