Cisco SRW2024P User Guide - Page 50
Spanning Tree
UPC - 745883571000
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Chapter 5 Advanced Configuration Use the Policy Settings button to open the Policy Name screen. Advanced Mode > Policy Name Advanced Mode > New Aggregate Policer Advanced Mode > Policy Name Policy Name Defines a new Policy name. Add to List The Add to List button lets you add the policy to the Policy Name table. Advanced Mode > New Class Map Advanced Mode > New Class Map Class Map Name Defines a new Class Map name. Preferred ACL Indicates if packets are first matched to an IP-based ACL or a MAC based ACL. The possible field values are: •• IP Based ACLs Matches packets to IP-based ACLs first, then matches packets to MAC based ACLs. •• MAC Based ACLs Matches packets to MAC-based ACLs first, then matches packets to IP-based ACLs. IP ACL Matches packets to IP-based ACLs first, then matches packets to MAC-based ACLs. Match Criteria used to match IP addresses and/or MAC addresses with an ACL's address. The possible field values are: •• And Both the MAC-based and the IP-based ACL must match a packet. •• Or Either the MAC-based or the IP-based ACL must match a packet. MAC ACL Matches packets to MAC-based ACLs first, then matches packets to IP-based ACLs. WebView Switches Advanced Mode > New Aggregate Policer Aggregate Policer Name Enter a name in this field. Ingress Committed Information Rate (CIR) Defines the CIR in bits per second. This field is only relevant when the Police value is Single. Ingress Committed Burst Size (CBS) Defines the CBS in bytes per second. This field is only relevant when the Police value is Single. Exceed Action Action assigned to incoming packets exceeding the CIR. This field is only relevant when the Police value is Single. Possible values are: •• Drop Drops packets exceeding the defined CIR value. •• Remark DSCP (Out of Profile DSCP) Remarks packet's DSCP values exceeding the defined CIR value. •• None Forwards packets exceeding the defined CIR value. Spanning Tree Spanning Tree Protocol (STP) provides tree topography for any arrangement of bridges. STP also provides one path between end stations on a network, eliminating loops. Loops occur when alternate routes exist between hosts. Loops in an extended network can cause bridges to forward traffic indefinitely, resulting in increased traffic and reducing network efficiency. The device supports the following Spanning Tree versions: •• Classic STP Provides a single path between end stations, avoiding and eliminating loops. •• Rapid STP Detects and uses network topologies that provide faster convergence of the spanning tree, without creating forwarding loops. •• Multiple STP Provides full connectivity for packets allocated to any VLAN. Multiple STP is based on the RSTP. In addition, Multiple STP transmits packets assigned to different VLANs through different MST regions. MST regions act as a single bridge. 43