4. RESULTADOS Y ANÁLISIS
4.2. Resultados MASW
4.2.2. Perfiles estratigráficos MASW
In the ERS 8300, each VLAN has its own forwarding database. This section includes the following topics:
•
• "Viewing the forwarding database" (page 77)
• "Clearing learned MAC addresses from the forwarding database" (page 79)
• "Configuring static forwarding" (page 80)
• "About MAC-layer bridge packet filtering" (page 83) • "Configuring VLAN forwarding database filters" (page 83)
Configuring aging in the VLAN forwarding database
To configure the VLAN forwarding database aging timeout period:
Step Action
1 Select VLAN > VLANs from the Device Manager menu bar. The VLAN dialog box appears with the Basic tab selected. See Figure 20 "VLAN dialog box - Basic tab" (page 58).
2 Select a VLAN in the VLAN dialog box.
3 Click Bridge.
The Bridge, VLAN dialog box appears with the Transparent tab selected. See "Bridge, VLAN dialog box - Transparent tab" (page 76).
The tab displays learned entry discards.
Managing the VLAN forwarding database 77
4 Enter an interval in seconds (10 - 1000000) in the FdbAging field for aging out dynamically learned forwarding information, or keep the default (300 seconds).
5 Click Apply.
6 Click Close.
The changes are applied and the Bridge, VLAN dialog box closes.
—End—
Table 11 "Bridge ,VLAN dialog box - Transparent tab fields" (page
77)describes the Transparent tab fields on the Bridge, VLAN dialog box.
Table 11
Bridge ,VLAN dialog box - Transparent tab fields
Field Description
FdbAging The timeout period in seconds for aging out dynamically learned forwarding information.The IEEE 802.1D-1990 standard recommends a default of 300 seconds. The actual aging time is up to twice the Fdb Aging value you assigned.
Viewing the forwarding database
The Forwarding tab shows the forwarding database for the VLAN, and contains unicast information about bridge forwarding and filtering.This information is used by transparent bridging to determine how to forward a received frame.
To access the Forwarding tab:
Step Action
1 Select VLAN > VLANs from the Device Manager menu bar. The VLAN dialog box appears with the Basic tab selected. See Figure 20 "VLAN dialog box - Basic tab" (page 58).
2 Select a VLAN in the VLAN dialog box.
The Forwarding tab appears. See "Bridge, VLAN dialog box - Forwarding tab" (page 78).
Bridge, VLAN dialog box - Forwarding tab
—End—
Table 12 "Bridge, VLAN dialog box - Forwarding tab fields" (page 78)describes the Bridge, VLAN dialog box, Forwarding tab fields.
Table 12
Bridge, VLAN dialog box - Forwarding tab fields
Field Description
Status Values include:
• self — one of the bridge’s addresses
• learned — a learned entry that is used
• mgmt — a static entry
MacAddress A unicast MAC address that the bridge has forwarding and filtering information for.
VlanId Specifies the virtual LAN identifier.
Port Either a value of zero (0) or the port number of the port, on which a frame having the specified MAC address is seen. A value of 0 indicates a self-assigned MAC address.
QosLevel Indicate the quality of service level of the incoming frames with this destination Mac Address.
• level0 (lowest priority)
• level1 (default) • level2 • level3 • level4 • level5 • level6
Managing the VLAN forwarding database 79
Field Description
• level7 (highest priority)
SmltRemote Specifies if you want to use SMLT.
Clearing learned MAC addresses from the forwarding database
For troubleshooting, you can manually flush the bridge forwarding database of learned MAC addresses. This operation can be done for all MAC addresses using one of the following procedures:
• "Clearing learned MAC addresses by VLAN" (page 79)
• "Clearing learned MAC addresses for all VLANs by port" (page 80)
Clearing learned MAC addresses by VLAN
To clear the forwarding database of learned MAC addresses for a VLAN:
Step Action
1 Select VLAN > VLANs from the Device Manager menu bar. The VLAN dialog box appears with the Basic tab selected. SeeFigure 20 "VLAN dialog box - Basic tab" (page 58).
2 Click the Advanced tab. The Advanced tab appears.
3 Double-click the VLAN Operation Action field for a specific VLAN, and select flushMacFdb from the drop-down menu. See "VLAN dialog box - Advanced tab: flushing the forwarding database" (page 79).
—End—
Clearing learned MAC addresses for all VLANs by port
To clear learned MAC addresses from the forwarding database for all VLANs by port:
Step Action
1 Select a port from the Device Manager Main window. The port is highlighted.
2 Select Edit > Port from the menu bar.
The Port dialog box appears with the Interface tab selected. See "Port dialog box - Interface tab" (page 72).
3 Select the FlushMacFdb option button in the Action field.
4 Click Apply.
5 Click Close.
All learned MAC addresses are cleared from the forwarding database for VLANs associated with this port.
—End—
Configuring static forwarding
To configure forwarding information:
Step Action
1 Select VLAN > VLANs from the Device Manager menu bar. The VLAN dialog box appears with the Basic tab selected. See Figure 20 "VLAN dialog box - Basic tab" (page 58).
2 Select a VLAN in the VLAN dialog box.
3 Click Bridge.
The Bridge, VLAN dialog box appears with the Transparent tab selected. See "Bridge, VLAN dialog box - Transparent tab" (page 76).
Managing the VLAN forwarding database 81
The Static tab appears. See"Bridge, VLAN - Static tab" (page 81).
Bridge, VLAN - Static tab
5 Click Insert.
The Bridge, VLAN, Insert Static dialog box appears. See "Bridge, VLAN, Insert Static dialog box" (page 81).
Bridge, VLAN, Insert Static dialog box
6 Enter a forwarding destination MAC address in the MacAddress field.
7 Click the ellipsis (...) in the Port field. The Bridge Static Port dialog box appears.
8 Click the number for the port that the frame is received on.
9 Click Ok.
The Bridge Static Port dialog box closes and the selected port appears in the Bridge, VLAN, Insert Static dialog box.
10 Select a quality of service level (0 - 8) option button in the QosLevel field, or use the default (level 1).
11 Click Insert.
The Bridge, VLAN, Insert Static dialog box closes and the static information appears in the Static tab of the Bridge, VLAN dialog box.
—End—
Table 13 "Bridge , VLAN - Static tab fields" (page 82)describes the Static tab fields on the Bridge, VLAN dialog box.
Table 13
Bridge , VLAN - Static tab fields
Field Description
MacAddress The destination MAC address in a frame, to which this entry’s forwarding information applies. This object can take the value of a unicast address.
Port The port number of the port that the frame is received on. VlanId Specifies the virtual LAN identifier.
QosLevel Indicate the quality of service level of the incoming frames with this destination Mac Address.
• level0 (lowest priority)
• level1 (default) • level2 • level3 • level4 • level5 • level6
• level7 (highest priority)
Status In the Static tab, displays one of the following states for this entry:
• permanent — in use and remains so after the next bridge reset. This value is the default
• deleteOnReset — in use and remains so until the next bridge reset
• deleteOnTimeout — currently in use and remains so until it is aged
• other — in use but the conditions under which it remains so, are different from other values
Managing the VLAN forwarding database 83
About MAC-layer bridge packet filtering
To perform MAC-layer bridging, the switch must know the destination MAC-layer address of each device on each attached network so it can forward packets to the appropriate destination. MAC-layer addresses are stored in the bridging table, and you can filter packet traffic based on the destination MAC-layer address information.
The MAC filtering supported in the ERS 8300 is the Bridge MIB filtering (RFC 1493). The number of MAC filters is limited to 100. You create a filter entry in much the same way as you create a static MAC entry; by entering a MAC address and the port it resides on. In the MAC filter record, you also specify the ports for which to discard source or destination packets for the MAC address on a port.
Configuring VLAN forwarding database filters
To configure a filter:
Step Action
1 From the Device Manager menu bar, select VLAN > VLANs. The VLAN dialog box appears with the Basic tab selected. See Figure 20 "VLAN dialog box - Basic tab" (page 58).
2 From the VLAN dialog box, select a VLAN.
3 Click Bridge.
The Bridge, VLAN dialog box appears with the Transparent tab selected. See "Bridge, VLAN dialog box - Transparent tab" (page 76).
4 Click the Filter tab.
5 Click Insert.
The Bridge, VLAN, Insert Filter dialog box appears. See "Bridge, VLAN, Insert Filter dialog box" (page 83).
6 Enter the MAC address, in the MacAddress field, used to match the destination address of incoming packets.
7 Click the (...) in the Port field.
The BridgeFilterPort dialog box appears.
8 Select the port number for this MAC address.
9 Click Ok.
The BridgeFilterPort dialog box closes and the port is added to the
Port field on the Bridge, VLAN, Insert Filter dialog box.
10 Select a drop method option button in the DropCommand field:
• none: No packets are dropped.
• srcDrop: Drops packets with this source MAC address. • dstDrop: Drops packets with this destination MAC address. • bothDrop: Drops packets with this source and destination MAC
address.
11 Click Insert.
The Bridge, VLAN, Insert Filter dialog box closes and the filter appears in the Filter tab.
12 Click Close in the Bridge, VLAN dialog box.
13 Click Close in the VLAN dialog box. The filter is configured.
—End—
Table 14 "Bridge, VLAN dialog box - Filter tab fields" (page 84)describes the Bridge, VLAN dialog box, Filter tab fields.
Table 14
Bridge, VLAN dialog box - Filter tab fields
Field Description
MacAddress The MAC address of this entry. This address is used to match the destination address of incoming packets.
VlanId Specifies the virtual LAN identifier.
Managing the VLAN forwarding database 85
Field Description
DropCommand Specify a drop method:
• none: No packets are dropped.
• srcDrop: Drops packets with this source MAC address.
• dstDrop: Drops packets with this destination MAC address.
• bothDrop: Drops packets with this source and destination MAC address.
QosLevel Indicate the quality of service level of the incoming frames with this destination Mac Address.
• level0 (lowest priority)
• level1 (default) • level2 • level3 • level4 • level5 • level6
• level7 (highest priority) Status Displays the status of this entry.
• other(1)
• invalid(2)
• permanent(3), the default
• deleteOnReset(4)
• deleteOnTimeout(5)
Configuring Layer 2 multicast MAC filtering
Configure Layer 2 multicast MAC filtering to direct MAC multicast flooding to a specific set of ports.
The VLAN dialog box appears with the Basic tab displayed. The Basic tab displays all defined VLANs, their configurations, and their current status.
2 From the table, select a VLAN.
3 Click Bridge.
The Bridge dialog box appears with the FDB Aging tab displayed.
4 Click the Multicast tab. The Multicast tab appears.
5 In the Multicast tab, click Insert.
6 In the Address box, type the MAC address for the multicast flooding domain.
7 Click the ellipsis (...) next to the ForwardingPorts box and choose from the list of ports that appear.
8 Click Ok.
9 Click the ellipsis (...) next to the MltIds box and choose from the list of MLT IDs that appear.
10 Click Ok.
11 After you finish entering the required information in the dialog box, click Insert.
—End—
Use the data in the following table to complete the Bridge, VLAN, Insert Multicast tab.
Table 15
Bridge, VLAN, Insert Multicast tab fields
Variable Value
Address The MAC address for the multicast flooding
domain.This field does not accept MAC addresses beginning with 01:00:5e
(01:00:5e:00:00:00 to 01:00:5e:ff:ff:ff inclusive). If you attempt to use this type of address, the following error message is displayed: Error: Invalid MAV address