7.6.1.0 - Force10 Networks

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Clear Dampening Counters Clear dampening counters and accumulated penalties using the command clear dampening, as shown in Figure 131. Figure 131 Clearing Dampening Counters Force10# clear dampening interface Gi 0/1 Force10# show interfaces dampening GigabitEthernet0/0 InterfaceState Flaps Penalty Half-LifeReuse SuppressMax-Sup Gi 0/1 Up 0 0 20 500 1500 300 Link Dampening Support for XML View the output of the following show commands in XML by adding | display xml to the end of the command: • show interfaces dampening • show interfaces dampening summary • show interfaces interface x/y The E-Series supports a link Maximum Transmission Unit (MTU) of 9252 bytes and maximum IP MTU of 9234 bytes. The link MTU is the frame size of a packet, and the IP MTU size is used for IP fragmentation. If the system determines that the IP packet must be fragmented as it leaves the interface, FTOS divides the packet into fragments no bigger than the size set in the ip mtu command. In FTOS: MTU = Entire Ethernet packet (Ethernet header + FCS + payload) Since different networking vendors define MTU differently, check their documentation when planing MTU sizes across a network. Table 21 lists the range for each transmission media. Table 21 MTU Range Transmission Media MTU Range (in bytes) Ethernet 594-9252 = link MTU 576-9234 = IP MTU Configuring MTU Size on an Interface 206 Interfaces
You must compensate for Layer-2 header when configuring IP MTU. If the packet includes a Layer-2 header, the difference between the link MTU and IP MTU must be enough bytes to include for the Layer-2 header. For example, for VLAN packets, if the IP MTU is 1400, the Link MTU must be no less than 1422: 1400 IP MTU + 22 VLAN Tag = 1422 bytes Link MTU Table 22 lists the various Layer 2 overheads found in FTOS and the number of bytes. Table 22 Difference between Link MTU and IP MTU Layer-2 Overhead Difference between Link MTU and IP MTU Ethernet (untagged) 18 bytes VLAN Tag 22 bytes Untagged Packet with VLAN-Stack Header 22 bytes Tagged Packet with VLAN-Stack Header 26 bytes Link MTU and IP MTU considerations for port channels and VLANs are as follows. Port Channels: • All members must have the same link MTU value and the same IP MTU value. • The port channel link MTU and IP MTU must be less than or equal to the link MTU and IP MTU values configured on the channel members. Example: if the members have a link MTU of 2100 and an IP MTU 2000, the port channel’s MTU values cannot be higher than 2100 for link MTU or 2000 bytes for IP MTU. VLANs: • All members of a VLAN must have same IP MTU value. • Members can have different Link MTU values. Tagged members must have a link MTU 4 bytes higher than untagged members to account for the packet tag. • The VLAN link MTU and IP MTU must be less than or equal to the link MTU and IP MTU values configured on the VLAN members. Example: The VLAN contains tagged members with Link MTU of 1522 and IP MTU of 1500 and untagged members with Link MTU of 1518 and IP MTU of 1500. The VLAN’s Link MTU cannot be higher than 1518 bytes and its IP MTU cannot be higher than 1500 bytes. FTOS Configuration Guide, version 7.6.1.0 207
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FTOS Configuration Guide for ® the
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Table 1 lists the new features in F
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Table 2 FTOS Features Newly Support
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Table 4 Newly Supported Hardware in
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Contents New Features . . . . . . .
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configure FTP server parameters . .
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SCP and SSH . . . . . . . . . . . .
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Configuration Task List for Port Ch
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enable ICMP redirects . . . . . . .
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Marking DSCP in Outgoing Packet . .
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Adding and Removing Interfaces . .
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General Routing Protocols . . . . .
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Preface About this Guide Objectives
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Chapter 1 Configuration Fundamental
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Figure 2 CLI Modes in FTOS CONFIGUR
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Table 6 FTOS Command Modes CLI Comm
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Figure 5 Undoing a command with the
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Table 7 Short-Cut Keys and their Ac
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If either of these messages appears
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Chapter 2 Getting Started When you
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Configuring a Host Name The host na
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To configure a username and passwor
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Important Points to Remember • Yo
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Viewing Files File information and
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To change the default storage locat
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1. Select a cache boot-image. See p
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View your cache boot configuration
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Chapter 3 Management This chapter e
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specify logging to a Syslog server
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In the lines above, local7 is the l
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configure a UNIX logging facility l
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To have FTOS include a timestamp wi
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configure the system to send SNMP n
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set SNMP information To set the con
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Table 10 MIB Objects for Copying Co
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Table 11 Copying Configuration File
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Figure 33 shows the command syntax
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To view the configured NTP time ser
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To view whether NTP is configured o
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configure FTP client parameters To
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To configure and assign an IP ACL t
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Figure 40 shows the steps used to c
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Figure 41 • Set a manual lock usi
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Chapter 4 Configuration Replace and
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Archiving a Configuration File Figu
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Figure 45 Force10#configure replace
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Configuring Auto-archive Figure 49
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Figure 51 Viewing the Difference be
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Chapter 5 RMON This describes the R
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setting rmon alarm To set an alarm
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The following example shows the rmo
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Chapter 6 Security Security in FTOS
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monitor accounting FTOS does not su
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AAA Authentication Login To configu
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To use local authentication for ena
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To configure a user name and passwo
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Step Command Syntax Command Mode Pu
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To view the password configured for
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Privilege Level Through the RADIUS
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If you want to change an optional p
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To select TACACS as the login authe
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TACACS+ Remote Authentication and A
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FTOS can assign different access cl
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To enable the SSH server for versio
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SSH with IPv6 FTOS supports both in
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Step Task 4 Attempt an inbound Teln
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Host-based Authentication Authentic
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Trace List You can log packet activ
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Command Syntax Command Mode Purpose
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Protection Against TCP Tiny and Ove
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Chapter 7 Layer 2 This chapter desc
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Port-Based VLANs Port-based VLANs a
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A VLAN is active only if the VLAN c
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MAC Addressing and MAC Access Lists
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Configuration Task List for MAC ACL
Page 155 and 156: To view a specific configured MAC A
Page 157 and 158: Figure 83 illustrates how the seq c
Page 159 and 160: To view which MAC ACL is applied to
Page 161 and 162: • Verify MAC learning-limit setti
Page 163 and 164: This example shows four ways to spe
Page 165 and 166: Recovering from MAC address learnin
Page 167 and 168: When NIC teaming is employed, consi
Page 169 and 170: As shown in Figure 98, the server M
Page 171 and 172: Chapter 8 GVRP Protocol Overview Ty
Page 173 and 174: Enable GVRP on a Layer 2 Interface
Page 175 and 176: Chapter 9 Interfaces This chapter d
Page 177 and 178: When an interface is in either mode
Page 179 and 180: To enter the INTERFACE mode, use th
Page 181 and 182: To clear the counters, use the foll
Page 183 and 184: • Once the virtual IP address is
Page 185 and 186: Dynamic—Port channels that are dy
Page 187 and 188: To distribute IP traffic over a por
Page 189 and 190: • shutdown/no shutdown • mtu (i
Page 191 and 192: change the criteria used to distrib
Page 193 and 194: configure the minimum oper up links
Page 195 and 196: A consideration for including VLANs
Page 197 and 198: duplicate entries Duplicate single
Page 199 and 200: Step Command Syntax Command Mode Us
Page 201 and 202: Force10#show interfaces tengigabite
Page 203 and 204: Though the rate is configurable wit
Page 205: • improves network stability by p
Page 209 and 210: Chapter 10 LACP The Link Aggregatio
Page 211 and 212: LACP Configuration FTOS enables the
Page 213 and 214: creating a LAG To create a LAG, def
Page 215 and 216: Debugging LACP Command Syntax Comma
Page 217 and 218: View the status of a failover group
Page 219 and 220: Chapter 11 VLAN Stacking This chapt
Page 221 and 222: Configuration Task List for VLAN-St
Page 223 and 224: Use the show vlan command in the EX
Page 225 and 226: E1200-1 Configuration E1200-1#sh ru
Page 227 and 228: vlan-stack compatible member Gigabi
Page 229 and 230: Chapter 12 IP Addressing Force10 sy
Page 231 and 232: Step Command Syntax Command Mode Pu
Page 233 and 234: • When interface goes down, FTOS
Page 235 and 236: • enable dynamic resolution of ho
Page 237 and 238: ARP Force10#traceroute www.force10n
Page 239 and 240: Command Syntax Command Mode Purpose
Page 241 and 242: 2. Configure a broadcast address on
Page 243 and 244: UDP Helper with Broadcast-all Addre
Page 245 and 246: Packet 2 is sent from a host on VLA
Page 247 and 248: Chapter 13 IP Access Control Lists,
Page 249 and 250: • configure a standard IP ACL on
Page 251 and 252: To view all configured IP ACLs, use
Page 253 and 254: Figure 171 illustrates how the seq
Page 255 and 256: Note: If an interface is configured
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To create an ingress ACLs, use the
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Configuring ACLs to Loopback E-Seri
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• A prefix list without any permi
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Figure 178 illustrates a prefix lis
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To view the configuration, use the
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Figure 183 shows the resequencing o
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Figure 184 Resequencing Remarks For
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To view the configuration, use the
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Also, if there are different instan
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configure a route map for route red
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Chapter 14 Quality of Service Force
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Aggregated Shaping Aggregated shapi
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Force10#config t Force10(conf)#inte
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Command Syntax Command Mode Usage r
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Command Syntax Command Mode Usage s
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• In case a QoS service policy th
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create a class-map To create Layer
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match ip precedence You can also us
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To configure a class-map to use a L
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Figure 207 shows how to define a Qo
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To remove an existing output QoS po
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To delete the command, use the no r
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To remove a previously set IP DSCP
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Show Commands To view input QoS pol
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Specify trust DSCP To define a dyna
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apply input policy maps to interfac
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To remove the output policy map fro
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Table 30 Pre-defined WRED Profile T
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To view the QoS statistics for WRED
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Figure 234 Packet Drop Rate for WRE
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• When multicast bandwidth is ass
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Test the policy-map size against th
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Chapter 15 VRRP Virtual Router Redu
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VRRP Benefits With VRRP configured
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To create a virtual router, use the
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Figure 240 shows the same VRRP grou
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To view the password, use the show
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To track an interface, use the foll
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Chapter 16 Spanning Tree Protocol P
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R1(conf)# int range gi 1/1 - 4 R1(c
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oot R1 R2 1/1 1/2 3/1 3/2 R3 1/3 1/
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To change these parameters: Task Co
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Preventing Network Disruptions with
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SNMP Traps for Root Elections and T
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Chapter 17 PVST+ PVST+ (Per-VLAN Sp
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Configuring Bridge Priority In STP,
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To change the max-age value in seco
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To change the port priority of an i
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Figure 265, shows the brief output
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Chapter 18 RSTP Rapid Spanning Tree
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To configure the interfaces for Lay
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R1#show spanning-tree rstp Root Ide
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To change these parameters, use the
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Task Command Syntax Command Mode As
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Chapter 19 MSTP IEEE 802.1s MSTP (M
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To allow for a larger number of por
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Force10#show spanning-tree msti 1 M
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The parameters forward-delay, hello
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Table 39 Multiple Spanning Tree Por
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Chapter 20 OSPF Open Shortest Path
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To confirm that this behavior is im
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FTOS supports one OSPF routing proc
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OSPF, by default, sends hello packe
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To suppress the interface’s parti
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Command Syntax Command Mode Usage i
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Command Syntax Command Mode Usage g
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edistribute routes You can add rout
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Chapter 21 802.1x Protocol Overview
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4. The authentication server replie
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To enable 802.1x: Step Task Command
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To configure the quiet period after
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Re-authenticating a Port Periodic R
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Figure 302 shows configuration info
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Guest and Authentication-fail VLANs
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Figure 305 Configuring an Authentic
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Chapter 22 Upgrade Procedures This
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Step Task Command Command Mode 3 Up
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Figure 308 Viewing the Boot Code Ve
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Figure 311 Determining if the Runni
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Upgrading All FPGAs You have the op
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Perform an upgrade only when the sy
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Figure 316 Upgrading E-Series SFM F
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Appendix A SNMP Traps SNMP SNMP is
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Table 40 SNMP Traps and OIDs OID St
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Figure 318 SNMP Traps and Error Mes
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Appendix B RFCs and MIBs This appen
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• RFC 2575—View-based Access Co
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• Definitions of Managed Objects
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If you have forgotten or lost your
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Appendix C Managing VLANs using SNM
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Query q-bride MIB object, dot1qVlan
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To assign ports 1-23 (line card 0)
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Changing Administrative Status with
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Numerics 10/100/1000 Base-T Etherne
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channel 188 configuring secondary I
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default 73, 76 definition 73 enabli
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RFC 2519 432 RFC 2558 434, 435 RFC
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Customer traffic 219 definition 219
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