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Page 2 - Overview of Interface Configuration; Media Access Control Address; Interface Port Identifier

4-2 Layer 3 Switching Software Feature and Configuration Guide 78-6235-04, Cisco IOS Release 12.0(10)W5(18) Chapter 4 Configuring Interfaces Overview of Interface Configuration Overview of Interface Configuration A router’s main function is to relay packets from one data link to another. To do that,...

Page 3 - General Instructions for Configuring Interfaces

4-3 Layer 3 Switching Software Feature and Configuration Guide 78-6235-04, Cisco IOS Release 12.0(10)W5(18) Chapter 4 Configuring Interfaces General Instructions for Configuring Interfaces Figure 4-1 Interface Port Identifier Format The interface port identifiers on the Ethernet modules remain the s...

Page 4 - About Layer 3 Switching Interfaces

4-4 Layer 3 Switching Software Feature and Configuration Guide 78-6235-04, Cisco IOS Release 12.0(10)W5(18) Chapter 4 Configuring Interfaces About Layer 3 Switching Interfaces Step 3 Follow each interface command with the interface configuration commands required for yourparticular interface. The co...

Page 5 - Initially Configuring Gigabit Ethernet Interfaces; About the Enhanced Gigabit Ethernet Interfaces (Catalyst 8540)

4-5 Layer 3 Switching Software Feature and Configuration Guide 78-6235-04, Cisco IOS Release 12.0(10)W5(18) Chapter 4 Configuring Interfaces About Layer 3 Switching Interfaces Initially Configuring Gigabit Ethernet Interfaces To configure an IP address and autonegotiation on a Gigabit Ethernet inter...

Page 6 - Initially Configuring Fast Ethernet Interfaces; Verifying the Ethernet Interface Configuration

4-6 Layer 3 Switching Software Feature and Configuration Guide 78-6235-04, Cisco IOS Release 12.0(10)W5(18) Chapter 4 Configuring Interfaces About Layer 3 Switching Interfaces Initially Configuring Fast Ethernet Interfaces Use the following procedure to assign an IP address to the Fast Ethernet 10Ba...

Page 8 - About Virtual LANs; Configuring ISL VLAN Encapsulation

4-8 Layer 3 Switching Software Feature and Configuration Guide 78-6235-04, Cisco IOS Release 12.0(10)W5(18) Chapter 4 Configuring Interfaces About Virtual LANs About Virtual LANs Virtual LANs enable network managers to group users logically rather than by physical location. Avirtual LAN (VLAN) is an...

Page 10 - Configuring 802.1Q VLAN Encapsulation

4-10 Layer 3 Switching Software Feature and Configuration Guide 78-6235-04, Cisco IOS Release 12.0(10)W5(18) Chapter 4 Configuring Interfaces Configuring 802.1Q VLAN Encapsulation Example The following example shows how to configure the interfaces for VLAN bridging with ISLencapsulation shown in Fig...

Page 12 - Monitoring VLAN Operation

4-12 Layer 3 Switching Software Feature and Configuration Guide 78-6235-04, Cisco IOS Release 12.0(10)W5(18) Chapter 4 Configuring Interfaces Monitoring VLAN Operation Example The following example shows how to configure the bridging between native and non-native 802.1QVLANs shown in Figure 4-3: Rou...

Page 13 - About the POS OC-12c Uplink Interface

4-13 Layer 3 Switching Software Feature and Configuration Guide 78-6235-04, Cisco IOS Release 12.0(10)W5(18) Chapter 4 Configuring Interfaces About the POS OC-12c Uplink Interface Because SONET/SDH (Synchronous Digital Hierarchy) is by definition a point-to-point circuit, PPP iswell suited for use o...

Page 15 - Default Configuration

4-15 Layer 3 Switching Software Feature and Configuration Guide 78-6235-04, Cisco IOS Release 12.0(10)W5(18) Chapter 4 Configuring Interfaces Configuring the POS OC-12c Uplink Interface (Catalyst 8540) Default Configuration Table 4-1 shows the default configuration of an enabled POS OC-12c uplink in...

Page 16 - Automatic Reverting of Clock Source

4-16 Layer 3 Switching Software Feature and Configuration Guide 78-6235-04, Cisco IOS Release 12.0(10)W5(18) Chapter 4 Configuring Interfaces Configuring the POS OC-12c Uplink Interface (Catalyst 8540) To initially configure the POS OC-12c uplink interface, perform the following steps, beginning ing...

Page 17 - Additional Configurations; Customizing the Configuration; Setting the MTU Size

4-17 Layer 3 Switching Software Feature and Configuration Guide 78-6235-04, Cisco IOS Release 12.0(10)W5(18) Chapter 4 Configuring Interfaces Configuring the POS OC-12c Uplink Interface (Catalyst 8540) Additional Configurations To configure additional properties to match those of the interface at th...

Page 18 - Configuring Framing

4-18 Layer 3 Switching Software Feature and Configuration Guide 78-6235-04, Cisco IOS Release 12.0(10)W5(18) Chapter 4 Configuring Interfaces Configuring the POS OC-12c Uplink Interface (Catalyst 8540) Configuring Framing The default framing mode for the POS OC-12c uplink interface is SONET STS-12c....

Page 19 - Configuring POS SPE Scrambling

4-19 Layer 3 Switching Software Feature and Configuration Guide 78-6235-04, Cisco IOS Release 12.0(10)W5(18) Chapter 4 Configuring Interfaces Configuring the POS OC-12c Uplink Interface (Catalyst 8540) The value of the c2 byte is determined as follows: • If the value of the c2 byte has not been expl...

Page 20 - Configuring SONET Alarms

4-20 Layer 3 Switching Software Feature and Configuration Guide 78-6235-04, Cisco IOS Release 12.0(10)W5(18) Chapter 4 Configuring Interfaces Configuring the POS OC-12c Uplink Interface (Catalyst 8540) Configuring SONET Alarms The OC-12c POS uplink interface supports SONET alarm monitoring. To confi...

Page 21 - Configuring SONET Delay Triggers

4-21 Layer 3 Switching Software Feature and Configuration Guide 78-6235-04, Cisco IOS Release 12.0(10)W5(18) Chapter 4 Configuring Interfaces Configuring the POS OC-12c Uplink Interface (Catalyst 8540) Configuring SONET Delay Triggers A trigger is an alarm, which when asserted causes the line protoc...

Page 22 - Verifying the POS Configuration

4-22 Layer 3 Switching Software Feature and Configuration Guide 78-6235-04, Cisco IOS Release 12.0(10)W5(18) Chapter 4 Configuring Interfaces Configuring the POS OC-12c Uplink Interface (Catalyst 8540) To configure a delay in triggering the line protocol of the interface from going down, perform the...

Page 27 - About the ATM Uplink Interface

4-27 Layer 3 Switching Software Feature and Configuration Guide 78-6235-04, Cisco IOS Release 12.0(10)W5(18) Chapter 4 Configuring Interfaces About ATM Uplinks (Catalyst 8540) SR1 72036 SR2 18806 SR3 0 SR4 0 SR5 0 MT1 15143 MT2 0 MT3 0 MT4 0 MT5 6 MT6 0 MT7 0 MT8 0 MT9 0 ST1 0 ST2 0 MRXS 262160 MTXS...

Page 28 - Configuring the ATM Uplink Interface (Catalyst 8540); Configuration Overview

4-28 Layer 3 Switching Software Feature and Configuration Guide 78-6235-04, Cisco IOS Release 12.0(10)W5(18) Chapter 4 Configuring Interfaces Configuring the ATM Uplink Interface (Catalyst 8540) Note The ATM uplink interface module does not work in a Catalyst 8540 MSR when the ATMrouter module is pr...

Page 29 - Initially Configuring the ATM Uplink Interface

4-29 Layer 3 Switching Software Feature and Configuration Guide 78-6235-04, Cisco IOS Release 12.0(10)W5(18) Chapter 4 Configuring Interfaces Configuring the ATM Uplink Interface (Catalyst 8540) In addition, the ATM uplink interface uses the non-configurable values shown in Table 4-5. Initially Conf...

Page 30 - Configuring the Clock Source

4-30 Layer 3 Switching Software Feature and Configuration Guide 78-6235-04, Cisco IOS Release 12.0(10)W5(18) Chapter 4 Configuring Interfaces Configuring the ATM Uplink Interface (Catalyst 8540) Example The following configuration is an example of the tasks in the preceding table: Router(config)# in...

Page 31 - Configuring SONET Framing

4-31 Layer 3 Switching Software Feature and Configuration Guide 78-6235-04, Cisco IOS Release 12.0(10)W5(18) Chapter 4 Configuring Interfaces Configuring the ATM Uplink Interface (Catalyst 8540) Note The ATM uplink supports IP unicast and IP multicast fragmentation. For IP unicastfragmentation, the ...

Page 34 - Configuring CDP; Configuring Virtual Circuits; Creating a PVC

4-34 Layer 3 Switching Software Feature and Configuration Guide 78-6235-04, Cisco IOS Release 12.0(10)W5(18) Chapter 4 Configuring Interfaces Configuring the ATM Uplink Interface (Catalyst 8540) Configuring CDP The ATM uplink interface is configured by default with Cisco Discovery Protocol (CDP) dis...

Page 35 - Mapping a Protocol Address to a PVC

4-35 Layer 3 Switching Software Feature and Configuration Guide 78-6235-04, Cisco IOS Release 12.0(10)W5(18) Chapter 4 Configuring Interfaces Configuring the ATM Uplink Interface (Catalyst 8540) To create a PVC, perform the following steps, beginning in global configuration mode: The atm pvc command...

Page 36 - Verifying the ATM Configuration

4-36 Layer 3 Switching Software Feature and Configuration Guide 78-6235-04, Cisco IOS Release 12.0(10)W5(18) Chapter 4 Configuring Interfaces Configuring the ATM Uplink Interface (Catalyst 8540) SVC Example In the following example, two switch routers with Layer 3 enabled ATM interfaces are connecte...

Page 38 - About Port Snooping

4-38 Layer 3 Switching Software Feature and Configuration Guide 78-6235-04, Cisco IOS Release 12.0(10)W5(18) Chapter 4 Configuring Interfaces About Port Snooping Interface Configuration Mode: ATM clock line; STS-3c k1/k2 = 0/0 c2 = 0x13 Active Defects:None Alarm reporting enabled for:SF SLOS SLOF B1...

Page 39 - Restrictions on Port Snooping; About the Snooping Destination Port; Configuring Snooping

4-39 Layer 3 Switching Software Feature and Configuration Guide 78-6235-04, Cisco IOS Release 12.0(10)W5(18) Chapter 4 Configuring Interfaces Configuring Snooping Restrictions on Port Snooping The following restrictions apply to port snooping: • The combined physical bandwidth of the source ports mu...

Page 41 - Monitoring Snooping

4-41 Layer 3 Switching Software Feature and Configuration Guide 78-6235-04, Cisco IOS Release 12.0(10)W5(18) Chapter 4 Configuring Interfaces Monitoring Snooping Monitoring Snooping To monitor the current snooping mode configuration and status, use the following commands: Now that you have configure...