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... Setting the CDP Holdtime 21-4 Displaying CDP Neighbor Information 21-5 Using Switch TopN Reports 22-1 Understanding How Switch TopN Reports Works 22-1 Running Switch TopN Reports Without the Background Option 22-2 Running Switch TopN Reports with the Background Option 22-2 Running and Viewing Switch TopN Reports 22-3 Configuring UDLD 23-1 Understanding How UDLD Works 23... 7.5(1) 24-8 Understanding SNMPv3 24-11 Benefits of SNMPv3 24-11 SNMP Entity 24-11 Configuring SNMPv3 from an NMS 24-14 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 xv
... Setting the CDP Holdtime 21-4 Displaying CDP Neighbor Information 21-5 Using Switch TopN Reports 22-1 Understanding How Switch TopN Reports Works 22-1 Running Switch TopN Reports Without the Background Option 22-2 Running Switch TopN Reports with the Background Option 22-2 Running and Viewing Switch TopN Reports 22-3 Configuring UDLD 23-1 Understanding How UDLD Works 23... 7.5(1) 24-8 Understanding SNMPv3 24-11 Benefits of SNMPv3 24-11 SNMP Entity 24-11 Configuring SNMPv3 from an NMS 24-14 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 xv
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... other IP subnets to the default gateway (typically a router interface in the same network or subnet as the switch IP address). The me1 interface is present only on the Catalyst 4500 series, Catalyst 2948G, and Catalyst 2980G switches. If necessary, bring the interface up Verify the interface configuration. Setting the Management Ethernet (me1) Interface IP Address...
... other IP subnets to the default gateway (typically a router interface in the same network or subnet as the switch IP address). The me1 interface is present only on the Catalyst 4500 series, Catalyst 2948G, and Catalyst 2980G switches. If necessary, bring the interface up Verify the interface configuration. Setting the Management Ethernet (me1) Interface IP Address...
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... route default 10.1.1.1 Route added. Configuring the SLIP (sl0) Interface on the Console Port Chapter 3 Configuring the Switch IP Address and Default Gateway default 10.1.1.10 0x0 G 0 sc0 10.0.0.0 10.1.1.100 0xff000000 U 75 sc0 default default 0xff000000 UH 0 sl0 Console> (enable) This example shows how to configure two default gateways on a Catalyst 4500 series, Catalyst 2948G, or Catalyst 2980G switch, with Telnet...
... route default 10.1.1.1 Route added. Configuring the SLIP (sl0) Interface on the Console Port Chapter 3 Configuring the Switch IP Address and Default Gateway default 10.1.1.10 0x0 G 0 sc0 10.0.0.0 10.1.1.100 0xff000000 U 75 sc0 default default 0xff000000 UH 0 sl0 Console> (enable) This example shows how to configure two default gateways on a Catalyst 4500 series, Catalyst 2948G, or Catalyst 2980G switch, with Telnet...
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...Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 3-9 network. This address is displayed under the MAC-Address(es) heading. (With DHCP, this task: Step 1 Step 2 Task Command Make sure that there is necessary only if using the manual allocation method.) show interface sl0: flags=51 slip 10.1.1.1 dest 10...inet 10.1.1.100 netmask 255.255.255.0 broadcast 10.1.1.255 Console> (enable) slip attach Console Port now running SLIP... interface sl0 10.1.1.1 10.1.1.2 Interface sl0 slip and destination address set. Enter privileged mode on the - Cisco Systems, Inc...
...Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 3-9 network. This address is displayed under the MAC-Address(es) heading. (With DHCP, this task: Step 1 Step 2 Task Command Make sure that there is necessary only if using the manual allocation method.) show interface sl0: flags=51 slip 10.1.1.1 dest 10...inet 10.1.1.100 netmask 255.255.255.0 broadcast 10.1.1.255 Console> (enable) slip attach Console Port now running SLIP... interface sl0 10.1.1.1 10.1.1.2 Interface sl0 slip and destination address set. Enter privileged mode on the - Cisco Systems, Inc...
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... address. Release the lease on a DHCP-assigned IP address. show interface address, subnet mask, and broadcast address are set interface sc0 dhcp release 3-10 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Command set interface sc0 dhcp renew set correctly. Renewing and Releasing a DHCP-Assigned IP Address Chapter 3 Configuring...
... address. Release the lease on a DHCP-assigned IP address. show interface address, subnet mask, and broadcast address are set interface sc0 dhcp release 3-10 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Command set interface sc0 dhcp renew set correctly. Renewing and Releasing a DHCP-Assigned IP Address Chapter 3 Configuring...
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... Ethernet switching on a Gigabit Ethernet port runs out of space, the port transmits a special packet that requests remote ports to delay sending packets for the commands used in this chapter, refer to the Catalyst 4500 Series, Catalyst 2948G, and Catalyst 2980G Switches Command Reference...describe how Gigabit Ethernet works. The configuration procedures in this chapter apply to other devices. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 5-1 This special packet is a feature that can receive and process pause frames...
... Ethernet switching on a Gigabit Ethernet port runs out of space, the port transmits a special packet that requests remote ports to delay sending packets for the commands used in this chapter, refer to the Catalyst 4500 Series, Catalyst 2948G, and Catalyst 2980G Switches Command Reference...describe how Gigabit Ethernet works. The configuration procedures in this chapter apply to other devices. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 5-1 This special packet is a feature that can receive and process pause frames...
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... modules. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-2 78-15486-01 In addition, on the Catalyst 4500 series switches, you can configure any two to eight ports. Depending on your hardware supports EtherChannel, and to confirm which is a Cisco-proprietary protocol... to the source and destination MAC addresses. The configuration is hardware dependent. You can be run only on PAgP and LACP EtherChannel ports. Understanding Frame Distribution EtherChannel distributes frames across the ports in the channel.
... modules. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-2 78-15486-01 In addition, on the Catalyst 4500 series switches, you can configure any two to eight ports. Depending on your hardware supports EtherChannel, and to confirm which is a Cisco-proprietary protocol... to the source and destination MAC addresses. The configuration is hardware dependent. You can be run only on PAgP and LACP EtherChannel ports. Understanding Frame Distribution EtherChannel distributes frames across the ports in the channel.
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... EtherChannel, it is treated as a nonchannel port. If a port is transferred to full duplex. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-3 Instead of eight compatibly configured ports per EtherChannel; A syslog message is physically connected... Configuration Guidelines and Restrictions If improperly configured, some EtherChannel ports are no longer suspended. If you cannot run two protocols on the other problems. Follow the guidelines below to avoid configuration problems. Note Except where noted...
... EtherChannel, it is treated as a nonchannel port. If a port is transferred to full duplex. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-3 Instead of eight compatibly configured ports per EtherChannel; A syslog message is physically connected... Configuration Guidelines and Restrictions If improperly configured, some EtherChannel ports are no longer suspended. If you cannot run two protocols on the other problems. Follow the guidelines below to avoid configuration problems. Note Except where noted...
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... 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 after the port is added to a channel. • VLAN Trunking Protocol (VTP) and Dual Ring... 1-port channel from spanning tree and then added it contains only one of VLANs on all the ports in the EtherChannel. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-4 78-15486-01 If the allowed range of service (QoS) configurations. • An EtherChannel ...
... 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 after the port is added to a channel. • VLAN Trunking Protocol (VTP) and Dual Ring... 1-port channel from spanning tree and then added it contains only one of VLANs on all the ports in the EtherChannel. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-4 78-15486-01 If the allowed range of service (QoS) configurations. • An EtherChannel ...
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... a manually configured channel using the on page 6-19). The following parameters: • System priority Each switch running LACP must have a system priority. The switch uses the MAC address and the system priority to aggregate with other systems. • Port priority Each..." section on mode. The administrative key defines the ability of a port to administrative key values. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-17 You can specify the system priority automatically or through the CLI (see the ...
... a manually configured channel using the on page 6-19). The following parameters: • System priority Each switch running LACP must have a system priority. The switch uses the MAC address and the system priority to aggregate with other systems. • Port priority Each..." section on mode. The administrative key defines the ability of a port to administrative key values. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-17 You can specify the system priority automatically or through the CLI (see the ...
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...how to specify the system priority as 10 for ports 1/1 to 1/4 and 2/6 to 2/8: Console> (enable) set port lacp-channel 1/1-4,2/6-8 port-priority 10 Port(s) 1/1-4,2/6-8 port-priority set to ... numbers represent lower priority. The default priority is 128. it applies only to 10. The system priority value must have unique administrative keys. Command set port lacp-...the show lacp-channel sys-id command to "passive." 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-19 Specifying an Administrative Key Value Note ...
...how to specify the system priority as 10 for ports 1/1 to 1/4 and 2/6 to 2/8: Console> (enable) set port lacp-channel 1/1-4,2/6-8 port-priority 10 Port(s) 1/1-4,2/6-8 port-priority set to ... numbers represent lower priority. The default priority is 128. it applies only to 10. The system priority value must have unique administrative keys. Command set port lacp-...the show lacp-channel sys-id command to "passive." 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 6-19 Specifying an Administrative Key Value Note ...
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...you to it sees. An MISTP instance is built into the rapid STP. MISTP Mode MISTP is required.) 7-12 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 you can only be used on any PVST+ BPDUs that each mode. ...This root switch propagates the information that is only one link will be mapped to avoid causing network loops. PVST+ runs on each...
...you to it sees. An MISTP instance is built into the rapid STP. MISTP Mode MISTP is required.) 7-12 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 you can only be used on any PVST+ BPDUs that each mode. ...This root switch propagates the information that is only one link will be mapped to avoid causing network loops. PVST+ runs on each...
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... running under PVST+ or for example, you can use PVST+. When MAC address reduction is enabled on Catalyst 4500 series switches, it detects the BPDUs of VLAN ports on your MISTP-PVST+ switches that you to use the show module command to the Catalyst 6500 Series Software Configuration Guide. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches...
... running under PVST+ or for example, you can use PVST+. When MAC address reduction is enabled on Catalyst 4500 series switches, it detects the BPDUs of VLAN ports on your MISTP-PVST+ switches that you to use the show module command to the Catalyst 6500 Series Software Configuration Guide. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches...
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...Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 however, it easier to 4094. If the other spanning tree instances. This extension provides for MST is an upcoming IEEE standard: 802.1s for both rapid convergence and load balancing in a VLAN environment. You can exist only on page 28-10... ID priority of other switches in the network are not running MAC reduction, the topology will change after you use the same configuration in the new Catalyst 4500 series switch, then the switch remains the root switch and the spanning tree ...
...Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 however, it easier to 4094. If the other spanning tree instances. This extension provides for MST is an upcoming IEEE standard: 802.1s for both rapid convergence and load balancing in a VLAN environment. You can exist only on page 28-10... ID priority of other switches in the network are not running MAC reduction, the topology will change after you use the same configuration in the new Catalyst 4500 series switch, then the switch remains the root switch and the spanning tree ...
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...(CST) information with the IST at the boundary of the PVST bridges. • Ensure that all . 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-15 Loop guard and root guard are supported in another region, even if the MST regions ...Common and Internal Spanning Tree (CIST). For private VLANs, secondary VLANs are called M-trees. The MST feature has these characteristics: • MST runs a variant of RSTP. - CIST is contained in each MST region. Note the following guidelines when using MST: • Do not disable ...
...(CST) information with the IST at the boundary of the PVST bridges. • Ensure that all . 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-15 Loop guard and root guard are supported in another region, even if the MST regions ...Common and Internal Spanning Tree (CIST). For private VLANs, secondary VLANs are called M-trees. The MST feature has these characteristics: • MST runs a variant of RSTP. - CIST is contained in each MST region. Note the following guidelines when using MST: • Do not disable ...
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...the appropriate pseudobridge ports by either of all the VLANs called CST. In a Catalyst 4500 series switch running PVST+, the VLAN 1 spanning tree corresponds to CST. In a Catalyst -4500 series switch running in the neighboring SST regions because the root identifier and root cost are optional...Spanning Tree 802.1Q specifies a single spanning tree for each time you commit the MST configuration. 7-18 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 MST Instances This release supports up to the configuration. MST ...
...the appropriate pseudobridge ports by either of all the VLANs called CST. In a Catalyst 4500 series switch running PVST+, the VLAN 1 spanning tree corresponds to CST. In a Catalyst -4500 series switch running in the neighboring SST regions because the root identifier and root cost are optional...Spanning Tree 802.1Q specifies a single spanning tree for each time you commit the MST configuration. 7-18 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 MST Instances This release supports up to the configuration. MST ...
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...form an MST region, bridges 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 A LAN's designated bridge has the same MST configuration as between regions.... However, the handshaking is a boundary port. Boundary Ports A port that connects to an SST region running RSTP (802.1w), an SST region running...
...form an MST region, bridges 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 A LAN's designated bridge has the same MST configuration as between regions.... However, the handshaking is a boundary port. Boundary Ports A port that connects to an SST region running RSTP (802.1w), an SST region running...
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...loop guard on the PVST+ switches, the ports might change to a loop-inconsistent state when the MST switches change their configuration. Do not designate switches with PVST+ switches that have VLANs 1-100 set up to span throughout the..., sys ID ext:3) 0 Remaining Hops 20 1/0 Bridge ID MAC ADDR Bridge ID Priority 00-10-7b-bb-2f-00 8195 (bridge priority:8192, sys ID ext:3) Port State Role Cost Prio... bridges propagate the decremented count as a switch running MST. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-21
...loop guard on the PVST+ switches, the ports might change to a loop-inconsistent state when the MST switches change their configuration. Do not designate switches with PVST+ switches that have VLANs 1-100 set up to span throughout the..., sys ID ext:3) 0 Remaining Hops 20 1/0 Bridge ID MAC ADDR Bridge ID Priority 00-10-7b-bb-2f-00 8195 (bridge priority:8192, sys ID ext:3) Port State Role Cost Prio... bridges propagate the decremented count as a switch running MST. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 7-21
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...mode and you configure them. When all of MISTP instance 1) 32 (global) • Gigabit Ethernet: 4 • Fast Ethernet: 10 • FDDI/CDDI: 10 • Ethernet: 100 Short (802.1D) Same as port priority but configurable on a per-VLAN basis in PVST+ Same as port cost but configurable on ... to run -time is mapped to use MISTP so that if you wish to use MISTP mode, you carefully follow the procedures that are using PVST+, you must have other switches in the network that are configured in PVST+ 20 sec 7-30 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software ...
...mode and you configure them. When all of MISTP instance 1) 32 (global) • Gigabit Ethernet: 4 • Fast Ethernet: 10 • FDDI/CDDI: 10 • Ethernet: 100 Short (802.1D) Same as port priority but configurable on a per-VLAN basis in PVST+ Same as port cost but configurable on ... to run -time is mapped to use MISTP so that if you wish to use MISTP mode, you carefully follow the procedures that are using PVST+, you must have other switches in the network that are configured in PVST+ 20 sec 7-30 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software ...
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...enable) Configuring a Secondary Root Switch You can run this task in case the primary root switch fails. 7-40 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Because different VLANs could potentially have different root switches, the bridge VLAN-priority chosen ... it becomes the root for VLANs 1-10: Console> (enable) set spantree root 1-10 dia 4 VLANs 1-10 bridge priority set to 8192. The set to become the root switch if the primary root switch fails. Switch is in the switch becoming a root, modify the bridge ...
...enable) Configuring a Secondary Root Switch You can run this task in case the primary root switch fails. 7-40 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 78-15486-01 Because different VLANs could potentially have different root switches, the bridge VLAN-priority chosen ... it becomes the root for VLANs 1-10: Console> (enable) set spantree root 1-10 dia 4 VLANs 1-10 bridge priority set to 8192. The set to become the root switch if the primary root switch fails. Switch is in the switch becoming a root, modify the bridge ...