Concept Guide

Dening Interface Range Macros................................................................................................................................ 426
Dene the Interface Range.................................................................................................................................... 426
Choosing an Interface-Range Macro.................................................................................................................... 426
Monitoring and Maintaining Interfaces........................................................................................................................427
Split 40G Ports on a 16X40G QSFP+ Module............................................................................................................428
Splitting 100G Ports...................................................................................................................................................... 429
Link Dampening..............................................................................................................................................................429
Important Points to Remember............................................................................................................................. 430
Conguration Example of Link Dampening...........................................................................................................430
Enabling Link Dampening........................................................................................................................................432
Link Bundle Monitoring................................................................................................................................................. 433
Using Ethernet Pause Frames for Flow Control........................................................................................................ 434
Enabling Pause Frames........................................................................................................................................... 434
Congure the MTU Size on an Interface....................................................................................................................435
Port-Pipes.......................................................................................................................................................................436
CR4 Auto-Negotiation...................................................................................................................................................436
FEC Conguration......................................................................................................................................................... 436
Setting the Speed of Ethernet Interfaces.................................................................................................................. 438
Syslog Warning Upon Connecting SFP28 Optics with QSA....................................................................................439
Adjusting the Keepalive Timer......................................................................................................................................439
View Advanced Interface Information.........................................................................................................................440
Conguring the Interface Sampling Size.............................................................................................................. 440
Conguring the Trac Sampling Size Globally........................................................................................................... 441
Dynamic Counters......................................................................................................................................................... 443
Clearing Interface Counters....................................................................................................................................443
Enhanced Validation of Interface Ranges...................................................................................................................444
Compressing Conguration Files................................................................................................................................. 444
21 IPv4 Routing.............................................................................................................................................447
IP Addresses...................................................................................................................................................................448
Implementation Information....................................................................................................................................448
Conguration Tasks for IP Addresses..........................................................................................................................448
Assigning IP Addresses to an Interface.......................................................................................................................448
Conguring Static Routes.............................................................................................................................................449
Congure Static Routes for the Management Interface..........................................................................................450
IPv4 Path MTU Discovery Overview........................................................................................................................... 451
Packet handling during MTU mismatch.................................................................................................................451
Using the Congured Source IP Address in ICMP Messages...................................................................................451
Conguring the ICMP Source Interface................................................................................................................ 451
Conguring the Duration to Establish a TCP Connection........................................................................................ 452
Enabling Directed Broadcast........................................................................................................................................ 452
Resolution of Host Names............................................................................................................................................453
Enabling Dynamic Resolution of Host Names............................................................................................................453
Specifying the Local System Domain and a List of Domains................................................................................... 453
Conguring DNS with Traceroute................................................................................................................................454
ARP................................................................................................................................................................................. 455
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