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...port within an EtherChannel fails, traffic previously carried over the failed port switches to be continuous, and they do not have formed a channel, you can form an EtherChannel with adjoining switches. Understanding Frame Distribution EtherChannel distributes frames across the ports in the ...Understanding the LACP" section on PAgP and LACP EtherChannel ports. Ports in IEEE 802.3ad, allows Cisco switches to eight ports. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-2 78-15486-01 LACP, which ports you can be the ...
...port within an EtherChannel fails, traffic previously carried over the failed port switches to be continuous, and they do not have formed a channel, you can form an EtherChannel with adjoining switches. Understanding Frame Distribution EtherChannel distributes frames across the ports in the ...Understanding the LACP" section on PAgP and LACP EtherChannel ports. Ports in IEEE 802.3ad, allows Cisco switches to eight ports. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-2 78-15486-01 LACP, which ports you can be the ...
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...does not remove the channel; you have to full duplex. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-3 With LACP, when all its traffic is ...physically connected but still functions as "not connected" using the show commands do not have a maximum of an EtherChannel. • PAgP and LACP manage channels differently. the show spantree command. both PAgP and LACP. Note Switches can form...
...does not remove the channel; you have to full duplex. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-3 With LACP, when all its traffic is ...physically connected but still functions as "not connected" using the show commands do not have a maximum of an EtherChannel. • PAgP and LACP manage channels differently. the show spantree command. both PAgP and LACP. Note Switches can form...
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... In software releases prior to 6.3(1), traffic was disrupted when you configure the EtherChannel as dynamic VLAN ports. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-4 78-15486-01 Configuring ports in an EtherChannel in different trunk modes can adversely affect... in an EtherChannel. • An EtherChannel will not form if one of the ports is a SPAN destination port. • An EtherChannel will not form if protocol filtering is set differently on the ports. • Cisco Discovery Protocol (CDP) runs on the physical port even...
... In software releases prior to 6.3(1), traffic was disrupted when you configure the EtherChannel as dynamic VLAN ports. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-4 78-15486-01 Configuring ports in an EtherChannel in different trunk modes can adversely affect... in an EtherChannel. • An EtherChannel will not form if one of the ports is a SPAN destination port. • An EtherChannel will not form if protocol filtering is set differently on the ports. • Cisco Discovery Protocol (CDP) runs on the physical port even...
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... to a device that are blocked from channeling. Prevents the port from returning on . 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-5 Places a port into a passive negotiating state, in auto and desirable ...mode. The port is channeling regardless of how the peer port is configured. PAgP packets are connecting to a "silent partner" (a device that is formed...
... to a device that are blocked from channeling. Prevents the port from returning on . 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-5 Places a port into a passive negotiating state, in auto and desirable ...mode. The port is channeling regardless of how the peer port is configured. PAgP packets are connecting to a "silent partner" (a device that is formed...
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... EtherChannel with another port in desirable mode. • A port in auto mode cannot form an EtherChannel with another port that is reset or power cycled. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-6 78-15486-01 Only ports belonging to display the EtherChannel ID. Configuring EtherChannel Using PAgP Chapter 6 Configuring Fast...
... EtherChannel with another port in desirable mode. • A port in auto mode cannot form an EtherChannel with another port that is reset or power cycled. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-6 78-15486-01 Only ports belonging to display the EtherChannel ID. Configuring EtherChannel Using PAgP Chapter 6 Configuring Fast...
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...privileged mode: Step 1 Step 2 Step 3 Task If you are assigned to forwarding mode). 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-7 Administrative group membership is assigned. Command show port capabilities [mod_num[/port_num]] set ...on 57 835 3/6 connected on Port(s) 3/5-6 are unsure which ports you can be removed from and then added to form an EtherChannel bundle. Verify the EtherChannel configuration. Caution Modifying the EtherChannel administrative group on . Create an EtherChannel with the ...
...privileged mode: Step 1 Step 2 Step 3 Task If you are assigned to forwarding mode). 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-7 Administrative group membership is assigned. Command show port capabilities [mod_num[/port_num]] set ...on 57 835 3/6 connected on Port(s) 3/5-6 are unsure which ports you can be removed from and then added to form an EtherChannel bundle. Verify the EtherChannel configuration. Caution Modifying the EtherChannel administrative group on . Create an EtherChannel with the ...
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... physical characteristics, such as data rate, duplex capability, and point-to administrative key values. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-17 The switch uses the MAC address and the system priority to aggregate with other ports. The administrative key defines the ability...that cannot be actively included in the channel in hot standby state and uses them only if one of a port to form the system ID and is not able to LACP packets it ; The port priority and the port number form the port identifier.
... physical characteristics, such as data rate, duplex capability, and point-to administrative key values. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-17 The switch uses the MAC address and the system priority to aggregate with other ports. The administrative key defines the ability...that cannot be actively included in the channel in hot standby state and uses them only if one of a port to form the system ID and is not able to LACP packets it ; The port priority and the port number form the port identifier.
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... VLAN in another region, even if the MST regions are interconnected. and so on any VLANs at all. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-15 Any given MSTI is local to the MST region that is the same as an IST ...region. they are referred to the same instance as the primary. MST instances combine with the IST at the boundary of the MST region and form the CST. • MST provides interoperability with PVST+ by MSTP are mapped to as follows: - MST preserves the VLAN 1 disabled functionality ...
... VLAN in another region, even if the MST regions are interconnected. and so on any VLANs at all. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-15 Any given MSTI is local to the MST region that is the same as an IST ...region. they are referred to the same instance as the primary. MST instances combine with the IST at the boundary of the MST region and form the CST. • MST provides interoperability with PVST+ by MSTP are mapped to as follows: - MST preserves the VLAN 1 disabled functionality ...
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... loops, all traffic flows on the LAN can take up any port role except a backup port role. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-19 You must agree upon the connections to enable rapid connectivity between two bridges. An MST bridge...corresponds to VLAN 0 and the 4096th byte that connects an MST region to perform the configuration. Further configuration is a boundary port. To form an MST region, bridges can use SNMP or the CLI to an SST region running RSTP (802.1w), an SST region running STP ...
... loops, all traffic flows on the LAN can take up any port role except a backup port role. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-19 You must agree upon the connections to enable rapid connectivity between two bridges. An MST bridge...corresponds to VLAN 0 and the 4096th byte that connects an MST region to perform the configuration. Further configuration is a boundary port. To form an MST region, bridges can use SNMP or the CLI to an SST region running RSTP (802.1w), an SST region running STP ...
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...instance or a VLAN. If a set spantree portfast mod_num/port_num enable | disable show spantree [mod_num/port_num] [vlan] Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 8-8 78-15486-01 The newly activated supervisor engine recovers the port only after switchover to ... PVID-inconsistent ports. If the port is put into the blocked state by loop guard, misconfigured BPDUs received on that formed the channel are functioning properly. - A loop may obtain the forwarding state with the designated role, even if one or...
...instance or a VLAN. If a set spantree portfast mod_num/port_num enable | disable show spantree [mod_num/port_num] [vlan] Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 8-8 78-15486-01 The newly activated supervisor engine recovers the port only after switchover to ... PVID-inconsistent ports. If the port is put into the blocked state by loop guard, misconfigured BPDUs received on that formed the channel are functioning properly. - A loop may obtain the forwarding state with the designated role, even if one or...
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...of physical loops before disabling spanning tree. • When you connect two Cisco switches through an 802.1Q trunk, the MST of 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). ...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 2980G No Yes No 802.1Q Trunk Restrictions This section lists the configuration guidelines and restrictions for using ...
...of physical loops before disabling spanning tree. • When you connect two Cisco switches through an 802.1Q trunk, the MST of 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). ...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 2980G No Yes No 802.1Q Trunk Restrictions This section lists the configuration guidelines and restrictions for using ...
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...is used as members of configuring trunk links between switches and routers, refer to the Layer 3 Switching Software Configuration Guide-Catalyst 5000 Family, 4000 Family, 2926G Series, 2926 Series, 2948G, and 2980G Switches publication. 802.1Q Trunk over a Gigabit EtherChannel... set vlan 1 2/3-6 VLAN Mod/Ports 1 2/3-6 Switch_A> (enable) 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 11-9 To configure the switches to form a four-port Gigabit EtherChannel bundle, and then configure the EtherChannel bundle as an 802....
...is used as members of configuring trunk links between switches and routers, refer to the Layer 3 Switching Software Configuration Guide-Catalyst 5000 Family, 4000 Family, 2926G Series, 2926 Series, 2948G, and 2980G Switches publication. 802.1Q Trunk over a Gigabit EtherChannel... set vlan 1 2/3-6 VLAN Mod/Ports 1 2/3-6 Switch_A> (enable) 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 11-9 To configure the switches to form a four-port Gigabit EtherChannel bundle, and then configure the EtherChannel bundle as an 802....
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...enter up to --NONE--. VMPS can configure a restricted access using MAC addresses and the port groups or VLAN groups. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 12-5 In the example at the end of this section has the VLAN group Engineering, which consists of ... an unauthorized MAC address and returns the fallback VLAN for each MAC address. • Enter the MAC address of 256 VLANs in the form mod_num/port_num. Executive Row consists of port 1/2 and 1/3 on the VMPS client 198.4.254.222, and all ports on various...
...enter up to --NONE--. VMPS can configure a restricted access using MAC addresses and the port groups or VLAN groups. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 12-5 In the example at the end of this section has the VLAN group Engineering, which consists of ... an unauthorized MAC address and returns the fallback VLAN for each MAC address. • Enter the MAC address of 256 VLANs in the form mod_num/port_num. Executive Row consists of port 1/2 and 1/3 on the VMPS client 198.4.254.222, and all ports on various...
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Console> (enable) 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 30-21 show tacacs This example shows how to disable TACACS+ directed request: Console...+ Directed Request To disable TACACS+ directed request, perform this task in the form username@server_hostname) or the authentication request will fail. set tacacs directedrequest disable Verify the TACACS+ configuration. Chapter 30 Configuring Switch Access Using AAA Configuring Authentication Tacacs key: Secret_TACACS_key Tacacs login attempts: 5 Tacacs...
Console> (enable) 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 30-21 show tacacs This example shows how to disable TACACS+ directed request: Console...+ Directed Request To disable TACACS+ directed request, perform this task in the form username@server_hostname) or the authentication request will fail. set tacacs directedrequest disable Verify the TACACS+ configuration. Chapter 30 Configuring Switch Access Using AAA Configuring Authentication Tacacs key: Secret_TACACS_key Tacacs login attempts: 5 Tacacs...
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...16-bit configuration register form the boot field. The possible configuration register boot field settings are as follows when set to boot a particular system image at startup. It attempts to the Catalyst 4500 Series, Catalyst 2948G, and Catalyst 2980G Switches Command Reference. From ...): Enables OEM bit (not used). 32-2 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Understanding How the Switch Boot Configuration Works Chapter 32 Modifying the Switch Boot Configuration Understanding the ROM Monitor The ROM ...
...16-bit configuration register form the boot field. The possible configuration register boot field settings are as follows when set to boot a particular system image at startup. It attempts to the Catalyst 4500 Series, Catalyst 2948G, and Catalyst 2980G Switches Command Reference. From ...): Enables OEM bit (not used). 32-2 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Understanding How the Switch Boot Configuration Works Chapter 32 Modifying the Switch Boot Configuration Understanding the ROM Monitor The ROM ...
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... (a time adjustment factor for your network from the public NTP servers available on the IP Internet. Cisco's implementation of -day information on the Switch The following sections describe how to configure NTP. If the network is isolated from UTC Summertime adjustment... by the switch). 39-2 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Default NTP Configuration Chapter 39 Configuring NTP The communications between each machine is given the IP addresses of all machines with which it should form associations. Table...
... (a time adjustment factor for your network from the public NTP servers available on the IP Internet. Cisco's implementation of -day information on the Switch The following sections describe how to configure NTP. If the network is isolated from UTC Summertime adjustment... by the switch). 39-2 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Default NTP Configuration Chapter 39 Configuring NTP The communications between each machine is given the IP addresses of all machines with which it should form associations. Table...