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...forwarding at any given time. This switchover takes approximately 1 to forwarding state 11242 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 8-3 This enhancement might not be useful for other types of active VLANs. The port...listening and learning states (as shown in blocking state. Figure 8-1 UplinkFast Example Before Direct Link Failure Switch A (Root) Switch B L1 L2 L3 Blocked port 11241 Switch C If Switch C detects a link failure on the currently active link L2 (a direct link failure), UplinkFast unblocks the...
...forwarding at any given time. This switchover takes approximately 1 to forwarding state 11242 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 8-3 This enhancement might not be useful for other types of active VLANs. The port...listening and learning states (as shown in blocking state. Figure 8-1 UplinkFast Example Before Direct Link Failure Switch A (Root) Switch B L1 L2 L3 Blocked port 11241 Switch C If Switch C detects a link failure on the currently active link L2 (a direct link failure), UplinkFast unblocks the...
Software Guide
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... 15 dummy multicast frames are transmitted per 100 ms. Each dummy multicast frame uses the...port on Switch C that connects directly to Switch B over link L3 is not directly connected) when the switch receives inferior BPDUs from its designated bridge on its root port or blocked ports. Switches receiving these...Switch A, the root switch, connects directly to Switch B over link L2. If the inferior BPDU arrives on a blocked port, the root port and other blocked ports on the switch become alternate paths to the root bridge. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches...
... 15 dummy multicast frames are transmitted per 100 ms. Each dummy multicast frame uses the...port on Switch C that connects directly to Switch B over link L3 is not directly connected) when the switch receives inferior BPDUs from its designated bridge on its root port or blocked ports. Switches receiving these...Switch A, the root switch, connects directly to Switch B over link L2. If the inferior BPDU arrives on a blocked port, the root port and other blocked ports on the switch become alternate paths to the root bridge. Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches...
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...Guard Understanding How BackboneFast Works Figure 8-3 Example of BackboneFast before Indirect Link Failure Switch A (Root) Switch B L1 L2 L3 Blocked port 11241 Switch C If link L1 fails, Switch C detects this failure as an indirect failure, since it is the designated ...to account for the port to Switch A, the root switch. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 8-5 Figure 8-5 shows a shared-medium topology in which indicate that Switch B is the root switch. This switchover takes approximately 30...
...Guard Understanding How BackboneFast Works Figure 8-3 Example of BackboneFast before Indirect Link Failure Switch A (Root) Switch B L1 L2 L3 Blocked port 11241 Switch C If link L1 fails, Switch C detects this failure as an indirect failure, since it is the designated ...to account for the port to Switch A, the root switch. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software Configuration Guide-Release 8.1 8-5 Figure 8-5 shows a shared-medium topology in which indicate that Switch B is the root switch. This switchover takes approximately 30...
Software Guide
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... in the source VLANs become operational source ports for analysis at the destination port. Spanning tree is automatically disabled on the WS-4232-L3 module The SPAN line in the Admin source list are monitored, provided these VLANs are active for the trunk. •... A 10/100 port reflects at a slightly lower rate. Ingress SPAN Ingress SPAN copies network traffic that is received by the source ports for VSPAN sessions. • A VSPAN session is disabled if the Admin source VLANs list is empty. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software ...
... in the source VLANs become operational source ports for analysis at the destination port. Spanning tree is automatically disabled on the WS-4232-L3 module The SPAN line in the Admin source list are monitored, provided these VLANs are active for the trunk. •... A 10/100 port reflects at a slightly lower rate. Ingress SPAN Ingress SPAN copies network traffic that is received by the source ports for VSPAN sessions. • A VSPAN session is disabled if the Admin source VLANs list is empty. 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches Software ...
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... Fast Ethernet switching module WS-4148-FX-MT 18-port server switching 1000BASE-X (GBIC) Gigabit Ethernet WS-4418-GB Catalyst 4006 Backplane Channel Module WS-X4019 48-port 10/100 Fast Ethernet RJ-45 WS-X4148-RJ Catalyst 4003 and 4006 Layer 3 Services Module WS-X4232-L3 12-port 1000BASE...WS-X4448-GB-RJ45 Power Consumed During Operation (W) 110 25 30 50 0 10 10 35 Power Consumed in Reset Mode (W) 110 25 30 50 0 10 10 30 50 35 120 60 90 75 55 35 120 10 80 50 10 10 65 40 120 70 110 70 90 50 120 72 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches...
... Fast Ethernet switching module WS-4148-FX-MT 18-port server switching 1000BASE-X (GBIC) Gigabit Ethernet WS-4418-GB Catalyst 4006 Backplane Channel Module WS-X4019 48-port 10/100 Fast Ethernet RJ-45 WS-X4148-RJ Catalyst 4003 and 4006 Layer 3 Services Module WS-X4232-L3 12-port 1000BASE...WS-X4448-GB-RJ45 Power Consumed During Operation (W) 110 25 30 50 0 10 10 35 Power Consumed in Reset Mode (W) 110 25 30 50 0 10 10 30 50 35 120 60 90 75 55 35 120 10 80 50 10 10 65 40 120 70 110 70 90 50 120 72 78-15486-01 Catalyst 4500 Series, Catalyst 2948G, Catalyst 2980G Switches...