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... Untagged Traffic 11-19 Configuring Trunk Ports for Load Sharing 11-19 Load Sharing Using STP Port Priorities 11-20 Load Sharing Using STP Path Cost 11-21 Configuring VMPS 11-23 Understanding VMPS 11-23 Dynamic-Access Port VLAN Membership 11-24 Default VMPS Client Configuration 11-24 VMPS Configuration...-6 Secondary and Primary VLAN Configuration 12-7 Private-VLAN Port Configuration 12-8 Limitations with Other Features 12-9 Configuring and Associating VLANs in a Private VLAN 12-10 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide xi
... Untagged Traffic 11-19 Configuring Trunk Ports for Load Sharing 11-19 Load Sharing Using STP Port Priorities 11-20 Load Sharing Using STP Path Cost 11-21 Configuring VMPS 11-23 Understanding VMPS 11-23 Dynamic-Access Port VLAN Membership 11-24 Default VMPS Client Configuration 11-24 VMPS Configuration...-6 Secondary and Primary VLAN Configuration 12-7 Private-VLAN Port Configuration 12-8 Limitations with Other Features 12-9 Configuring and Associating VLANs in a Private VLAN 12-10 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide xi
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...-13 Disabling Spanning Tree 14-14 Configuring the Root Switch 14-14 Configuring a Secondary Root Switch 14-16 Configuring Port Priority 14-16 Configuring Path Cost 14-18 Configuring the Switch Priority of a VLAN 14-19 Configuring Spanning-Tree Timers 14-20 Configuring the Hello Time 14-20 Configuring the Forwarding... Unit Format and Processing 15-9 Processing Superior BPDU Information 15-10 Processing Inferior BPDU Information 15-10 Topology Changes 15-10 Contents 78-17058-01 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide xiii
...-13 Disabling Spanning Tree 14-14 Configuring the Root Switch 14-14 Configuring a Secondary Root Switch 14-16 Configuring Port Priority 14-16 Configuring Path Cost 14-18 Configuring the Switch Priority of a VLAN 14-19 Configuring Spanning-Tree Timers 14-20 Configuring the Hello Time 14-20 Configuring the Forwarding... Unit Format and Processing 15-9 Processing Superior BPDU Information 15-10 Processing Inferior BPDU Information 15-10 Topology Changes 15-10 Contents 78-17058-01 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide xiii
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... Configuration and Enabling MSTP 15-13 Configuring the Root Switch 15-14 Configuring a Secondary Root Switch 15-16 Configuring Port Priority 15-17 Configuring Path Cost 15-18 Configuring the Switch Priority 15-19 Configuring the Hello Time 15-19 Configuring the Forwarding-Delay Time 15-20 Configuring the Maximum-Aging... Guard 16-6 Enabling BPDU Filtering 16-7 Enabling EtherChannel Guard 16-8 Enabling Root Guard 16-9 Enabling Loop Guard 16-9 Displaying the Spanning-Tree Status 16-10 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide xiv 78-17058-01
... Configuration and Enabling MSTP 15-13 Configuring the Root Switch 15-14 Configuring a Secondary Root Switch 15-16 Configuring Port Priority 15-17 Configuring Path Cost 15-18 Configuring the Switch Priority 15-19 Configuring the Hello Time 15-19 Configuring the Forwarding-Delay Time 15-20 Configuring the Maximum-Aging... Guard 16-6 Enabling BPDU Filtering 16-7 Enabling EtherChannel Guard 16-8 Enabling Root Guard 16-9 Enabling Loop Guard 16-9 Displaying the Spanning-Tree Status 16-10 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide xiv 78-17058-01
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... Configuration Example 32-64 Displaying Multi-VRF CE Status 32-68 Configuring Protocol-Independent Features 32-69 Configuring Cisco Express Forwarding 32-69 Configuring the Number of Equal-Cost Routing Paths 32-70 Configuring Static Unicast Routes 32-71 Specifying Default Routes and Networks 32-72 Using... Route Maps to Redistribute Routing Information 32-73 Configuring Policy-Based Routing 32-76 PBR Configuration Guidelines 32-77 Enabling PBR 32-78 Cisco ME 3400 Ethernet ...
... Configuration Example 32-64 Displaying Multi-VRF CE Status 32-68 Configuring Protocol-Independent Features 32-69 Configuring Cisco Express Forwarding 32-69 Configuring the Number of Equal-Cost Routing Paths 32-70 Configuring Static Unicast Routes 32-71 Specifying Default Routes and Networks 32-72 Using... Route Maps to Redistribute Routing Information 32-73 Configuring Policy-Based Routing 32-76 PBR Configuration Guidelines 32-77 Enabling PBR 32-78 Cisco ME 3400 Ethernet ...
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... IP access or metro access image) • HSRP for Layer 3 router redundancy (requires metro IP access image) • Equal-cost routing for balancing load across multiple switches Availability Features • UniDirectional Link Detection (UDLD) and aggressive UDLD for detecting and disabling unidirectional...and rapid per-VLAN Spanning-Tree plus (PVST+) for link-level and switch-level redundancy (requires metro IP access image) Cisco ME 3400 Ethernet Access Switch Software Configuration Guide 1-4 78-17058-01 Bridge protocol data unit (BPDU) guard for preventing switches outside ...
... IP access or metro access image) • HSRP for Layer 3 router redundancy (requires metro IP access image) • Equal-cost routing for balancing load across multiple switches Availability Features • UniDirectional Link Detection (UDLD) and aggressive UDLD for detecting and disabling unidirectional...and rapid per-VLAN Spanning-Tree plus (PVST+) for link-level and switch-level redundancy (requires metro IP access image) Cisco ME 3400 Ethernet Access Switch Software Configuration Guide 1-4 78-17058-01 Bridge protocol data unit (BPDU) guard for preventing switches outside ...
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... maximum permitted average rate for using router advertisement and router solicitation messages to discover the addresses of network path information • Equal-cost routing for load balancing and redundancy • Internet Control Message Protocol (ICMP) and ICMP Router Discovery Protocol (IRDP) for a ...for traffic flows • Static IP routing for manually building a routing table of routers on directly attached subnets 78-17058-01 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide 1-7 Chapter 1 Overview Features • Weighted tail drop (WTD) as BPDU, CDP, ...
... maximum permitted average rate for using router advertisement and router solicitation messages to discover the addresses of network path information • Equal-cost routing for load balancing and redundancy • Internet Control Message Protocol (ICMP) and ICMP Router Discovery Protocol (IRDP) for a ...for traffic flows • Static IP routing for manually building a routing table of routers on directly attached subnets 78-17058-01 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide 1-7 Chapter 1 Overview Features • Weighted tail drop (WTD) as BPDU, CDP, ...
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... native vlan interface configuration command. For more information about IEEE 802.1Q configuration issues, see Chapter 14, "Configuring STP." 78-17058-01 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide 11-19 Beginning in privileged EXEC mode, follow these steps to which the traffic belongs. For vlan-id... load-sharing link can be assigned any VLAN ID. For load sharing using STP port priorities or STP path costs. By default, UNIs are disabled and NNIs are enabled. For information about STP, see the "IEEE 802.1Q Configuration Considerations" section ...
... native vlan interface configuration command. For more information about IEEE 802.1Q configuration issues, see Chapter 14, "Configuring STP." 78-17058-01 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide 11-19 Beginning in privileged EXEC mode, follow these steps to which the traffic belongs. For vlan-id... load-sharing link can be assigned any VLAN ID. For load sharing using STP port priorities or STP path costs. By default, UNIs are disabled and NNIs are enabled. For information about STP, see the "IEEE 802.1Q Configuration Considerations" section ...
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.... Follow the same steps on Switch B to share VLAN traffic by Path Cost Switch A Trunk port 1 VLANs 2 - 4 (path cost 30) VLANs 8 - 10 (path cost 19) Trunk port 2 VLANs 8 - 10 (path cost 30) VLANs 2 - 4 (path cost 19) 90573 Switch B 78-17058-01 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide 11-21 Load Sharing Using STP Path...
.... Follow the same steps on Switch B to share VLAN traffic by Path Cost Switch A Trunk port 1 VLANs 2 - 4 (path cost 30) VLANs 8 - 10 (path cost 19) Trunk port 2 VLANs 8 - 10 (path cost 30) VLANs 2 - 4 (path cost 19) 90573 Switch B 78-17058-01 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide 11-21 Load Sharing Using STP Path...
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... 4 and 8 through 10 are configured on Switch A. Verify that the interfaces configured in Steps 2 and 7 are set the spanning-tree path cost to 30 for VLANs 2 through 4. If not, create these steps to be configured as Trunk port 1, and enter interface configuration mode. In the... cost of 30 for VLANs 8 through 11 on the other configured trunk interface on Switch A. Configure the interface as an NNI. Return to global configuration mode. Return to privileged EXEC mode. Enter interface configuration mode for Trunk port 2. Repeat Steps 9 through 10. 11-22 Cisco ME 3400 ...
... 4 and 8 through 10 are configured on Switch A. Verify that the interfaces configured in Steps 2 and 7 are set the spanning-tree path cost to 30 for VLANs 2 through 4. If not, create these steps to be configured as Trunk port 1, and enter interface configuration mode. In the... cost of 30 for VLANs 8 through 11 on the other configured trunk interface on Switch A. Configure the interface as an NNI. Return to global configuration mode. Return to privileged EXEC mode. Enter interface configuration mode for Trunk port 2. Repeat Steps 9 through 10. 11-22 Cisco ME 3400 ...
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...spanning-tree algorithm to the root bridge in the spanning tree • Backup-A blocked port in a loopback configuration Note On the Cisco ME 3400 switch, only NNIs participate in an unstable network. Switches send and receive spanning-tree frames, called the designated switch. BPDUs contain ... the network, end stations might also learn end-station MAC addresses on a Cisco ME switch. These conditions result in STP. The path cost value represents the media speed. 14-2 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide 78-17058-01 STP Overview STP is located...
...spanning-tree algorithm to the root bridge in the spanning tree • Backup-A blocked port in a loopback configuration Note On the Cisco ME 3400 switch, only NNIs participate in an unstable network. Switches send and receive spanning-tree frames, called the designated switch. BPDUs contain ... the network, end stations might also learn end-station MAC addresses on a Cisco ME switch. These conditions result in STP. The path cost value represents the media speed. 14-2 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide 78-17058-01 STP Overview STP is located...
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... max-age protocol timers When a switch receives a configuration BPDU that port. For each switch based on the path cost. 78-17058-01 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide 14-3 Chapter 14 Configuring STP Understanding Spanning-Tree Features Note The switch sends keepalive messages...interface (or with an updated message to that currently stored for each VLAN, the switch with the lowest MAC address in the Cisco ME switch). When the switches in a network are configured with the default priority (32768), the switch with the highest switch priority...
... max-age protocol timers When a switch receives a configuration BPDU that port. For each switch based on the path cost. 78-17058-01 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide 14-3 Chapter 14 Configuring STP Understanding Spanning-Tree Features Note The switch sends keepalive messages...interface (or with an updated message to that currently stored for each VLAN, the switch with the lowest MAC address in the Cisco ME switch). When the switches in a network are configured with the default priority (32768), the switch with the highest switch priority...
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...STP • A designated switch for the switch, and a larger range of the bits previously used the old topology. 14-4 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide 78-17058-01 For the Cisco ME switch, this only applies to make the bridge ID unique for forwarded frames that the switch will be... which controls the selection of the bridge ID. When a port (NNI) transitions directly from that each VLAN. The designated switch incurs the lowest path cost when forwarding packets from nonparticipation in the spanning-tree topology to the LAN is selected.
...STP • A designated switch for the switch, and a larger range of the bits previously used the old topology. 14-4 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide 78-17058-01 For the Cisco ME switch, this only applies to make the bridge ID unique for forwarded frames that the switch will be... which controls the selection of the bridge ID. When a port (NNI) transitions directly from that each VLAN. The designated switch incurs the lowest path cost when forwarding packets from nonparticipation in the spanning-tree topology to the LAN is selected.
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... VLAN port cost (configurable on a per-VLAN basis) Spanning-tree timers Default Setting Enabled on page 14-10. For more information, see the "Supported Spanning-Tree Instances" section on NNIs in VLAN 1. Maximum-aging time: 20 seconds. 78-17058-01 Cisco ME 3400 Ethernet Access ...(optional) • Configuring a Secondary Root Switch, page 14-16 (optional) • Configuring Port Priority, page 14-16 (optional) • Configuring Path Cost, page 14-18 (optional) • Configuring the Switch Priority of a VLAN, page 14-19 (optional) • Configuring Spanning-Tree Timers, page 14-20...
... VLAN port cost (configurable on a per-VLAN basis) Spanning-tree timers Default Setting Enabled on page 14-10. For more information, see the "Supported Spanning-Tree Instances" section on NNIs in VLAN 1. Maximum-aging time: 20 seconds. 78-17058-01 Cisco ME 3400 Ethernet Access ...(optional) • Configuring a Secondary Root Switch, page 14-16 (optional) • Configuring Port Priority, page 14-16 (optional) • Configuring Path Cost, page 14-18 (optional) • Configuring the Switch Priority of a VLAN, page 14-19 (optional) • Configuring Spanning-Tree Timers, page 14-20...
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... to place into the forwarding state. If a loop occurs, spanning tree uses the path cost when selecting an interface to confirm the configuration. 14-18 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide 78-17058-01 Otherwise, you want selected last. Configuring Spanning...-Tree Features Chapter 14 Configuring STP Configuring Path Cost The spanning-tree path cost default value is derived from the ...
... to place into the forwarding state. If a loop occurs, spanning tree uses the path cost when selecting an interface to confirm the configuration. 14-18 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide 78-17058-01 Otherwise, you want selected last. Configuring Spanning...-Tree Features Chapter 14 Configuring STP Configuring Path Cost The spanning-tree path cost default value is derived from the ...
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...mode. To return to the default setting, use the no spanning-tree vlan vlan-id priority global configuration command. 78-17058-01 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide 14-19 Configuring the Switch Priority of a VLAN You can specify a single VLAN identified by VLAN..., a range of VLANs separated by a hyphen, or a series of a VLAN. Note Exercise care when using spanning-tree path costs, see the "Configuring Trunk Ports for Load Sharing" section on how to the default setting, use the no spanning-tree [vlan vlan-id] cost interface configuration command.
...mode. To return to the default setting, use the no spanning-tree vlan vlan-id priority global configuration command. 78-17058-01 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide 14-19 Configuring the Switch Priority of a VLAN You can specify a single VLAN identified by VLAN..., a range of VLANs separated by a hyphen, or a series of a VLAN. Note Exercise care when using spanning-tree path costs, see the "Configuring Trunk Ports for Load Sharing" section on how to the default setting, use the no spanning-tree [vlan vlan-id] cost interface configuration command.
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...The IST connects all the MSTP switches in all of the region to zero. The switch also initializes all regions. 78-17058-01 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide 15-3 The MST region appears as a result of the spanning-tree algorithm running between switches that ...a network with its own topology parameters, such as the IST master. If the switch receives superior MST root information (lower bridge ID, lower path cost, and so forth) than currently stored for region 1 (A) is local to the IST. The IST master for the port, it sends BPDUs claiming...
...The IST connects all the MSTP switches in all of the region to zero. The switch also initializes all regions. 78-17058-01 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide 15-3 The MST region appears as a result of the spanning-tree algorithm running between switches that ...a network with its own topology parameters, such as the IST master. If the switch receives superior MST root information (lower bridge ID, lower path cost, and so forth) than currently stored for region 1 (A) is local to the IST. The IST master for the port, it sends BPDUs claiming...
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...spanning-tree information into the BPDUs to compute the spanning-tree topology. Because of this, the spanning-tree parameters related to the 15-4 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide 78-17058-01 Instead, they use the message-age and maximum-age information in that of 0 and...BPDU transmission (for each region. Parameters related to -live (TTL) mechanism. Hop Count The IST and MST instances do not use the path cost to the root and a hop-count mechanism similar to the IP time-to the spanning-tree topology (for the same region. By using ...
...spanning-tree information into the BPDUs to compute the spanning-tree topology. Because of this, the spanning-tree parameters related to the 15-4 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide 78-17058-01 Instead, they use the message-age and maximum-age information in that of 0 and...BPDU transmission (for each region. Parameters related to -live (TTL) mechanism. Hop Count The IST and MST instances do not use the path cost to the root and a hop-count mechanism similar to the IP time-to the spanning-tree topology (for the same region. By using ...
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...and the Active Topology, page 15-6 • Rapid Convergence, page 15-7 • Synchronization of IEEE 802.1D and RSTP port states. 15-6 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide 78-17058-01 The RSTP builds upon the IEEE 802.1D STP to blocking in 802.1D). A port with...switch of the spanning tree can exist only when two ports are connected together in STP. • Root port-Provides the best path (lowest cost) when the switch forwards packets to the root switch. • Designated port-Connects to the designated switch, which the designated switch is attached...
...and the Active Topology, page 15-6 • Rapid Convergence, page 15-7 • Synchronization of IEEE 802.1D and RSTP port states. 15-6 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide 78-17058-01 The RSTP builds upon the IEEE 802.1D STP to blocking in 802.1D). A port with...switch of the spanning tree can exist only when two ports are connected together in STP. • Root port-Provides the best path (lowest cost) when the switch forwards packets to the root switch. • Designated port-Connects to the designated switch, which the designated switch is attached...
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... flag to support IEEE 802.1D switches. Processing Superior BPDU Information If a port receives superior root information (lower bridge ID, lower path cost, and so forth) than currently stored for the port) with the proposal flag set, the switch sends an agreement message after all the... However, for the port. Understanding RSTP Chapter 15 Configuring MSTP The RSTP does not have the TCA bit set. 15-10 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide 78-17058-01 The learning and forwarding flags are synchronized. Processing Inferior BPDU Information If a ...
... flag to support IEEE 802.1D switches. Processing Superior BPDU Information If a port receives superior root information (lower bridge ID, lower path cost, and so forth) than currently stored for the port) with the proposal flag set, the switch sends an agreement message after all the... However, for the port. Understanding RSTP Chapter 15 Configuring MSTP The RSTP does not have the TCA bit set. 15-10 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide 78-17058-01 The learning and forwarding flags are synchronized. Processing Inferior BPDU Information If a ...
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... Rapid Transitions, page 15-22 (optional) • Restarting the Protocol Migration Process, page 15-22 (optional) 78-17058-01 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide 15-11 However, if the RSTP switch is received). If the switch receives an IEEE 802.... (optional) • Configuring a Secondary Root Switch, page 15-16 (optional) • Configuring Port Priority, page 15-17 (optional) • Configuring Path Cost, page 15-18 (optional) • Configuring the Switch Priority, page 15-19 (optional) • Configuring the Hello Time, page 15-19 (optional) ...
... Rapid Transitions, page 15-22 (optional) • Restarting the Protocol Migration Process, page 15-22 (optional) 78-17058-01 Cisco ME 3400 Ethernet Access Switch Software Configuration Guide 15-11 However, if the RSTP switch is received). If the switch receives an IEEE 802.... (optional) • Configuring a Secondary Root Switch, page 15-16 (optional) • Configuring Port Priority, page 15-17 (optional) • Configuring Path Cost, page 15-18 (optional) • Configuring the Switch Priority, page 15-19 (optional) • Configuring the Hello Time, page 15-19 (optional) ...