Setup Guide

Table Of Contents
Setting the Speed of Ethernet Interfaces......................................................................................................................378
Syslog Warning Upon Connecting SFP28 Optics with QSA....................................................................................... 379
FEC Configuration.............................................................................................................................................................379
View Advanced Interface Information............................................................................................................................380
Configuring the Interface Sampling Size...................................................................................................................381
Configuring the Traffic Sampling Size Globally............................................................................................................. 382
Dynamic Counters.............................................................................................................................................................383
Clearing Interface Counters.......................................................................................................................................384
Enhanced Validation of Interface Ranges...................................................................................................................... 384
Compressing Configuration Files.....................................................................................................................................385
OUI on 25G and 50G Interfaces......................................................................................................................................387
Configuring OUI on 25G and 50G Interfaces...........................................................................................................387
21 IPv4 Routing...........................................................................................................................388
IP Addresses...................................................................................................................................................................... 389
Configuration Tasks for IP Addresses............................................................................................................................ 389
Assigning IP Addresses to an Interface..........................................................................................................................389
Configuring Static Routes................................................................................................................................................390
Configure Static Routes for the Management Interface..............................................................................................391
IPv4 Path MTU Discovery Overview...............................................................................................................................391
Using the Configured Source IP Address in ICMP Messages.....................................................................................392
Configuring the Duration to Establish a TCP Connection............................................................................................392
Enabling Directed Broadcast........................................................................................................................................... 393
Resolution of Host Names............................................................................................................................................... 393
Enabling Dynamic Resolution of Host Names................................................................................................................393
Specifying the Local System Domain and a List of Domains.......................................................................................394
Configuring DNS with Traceroute.................................................................................................................................. 394
ARP.....................................................................................................................................................................................395
Configuration Tasks for ARP...........................................................................................................................................395
Configuring Static ARP Entries....................................................................................................................................... 395
Enabling Proxy ARP.......................................................................................................................................................... 395
Clearing ARP Cache..........................................................................................................................................................396
ARP Learning via Gratuitous ARP...................................................................................................................................396
Enabling ARP Learning via Gratuitous ARP...................................................................................................................396
ARP Learning via ARP Request.......................................................................................................................................396
Configuring ARP Retries...................................................................................................................................................397
ICMP...................................................................................................................................................................................398
Configuration Tasks for ICMP.........................................................................................................................................398
Enabling ICMP Unreachable Messages..........................................................................................................................398
ICMP Redirects................................................................................................................................................................. 398
UDP Helper........................................................................................................................................................................ 399
Enabling UDP Helper........................................................................................................................................................ 400
Configuring a Broadcast Address................................................................................................................................... 400
Configurations Using UDP Helper...................................................................................................................................400
UDP Helper with Broadcast-All Addresses.....................................................................................................................401
UDP Helper with Subnet Broadcast Addresses.............................................................................................................401
UDP Helper with Configured Broadcast Addresses..................................................................................................... 402
UDP Helper with No Configured Broadcast Addresses...............................................................................................402
Troubleshooting UDP Helper...........................................................................................................................................402
Contents
13