Setting the Speed of Ethernet Interfaces.................................................................................................................. 447
Syslog Warning Upon Connecting SFP28 Optics with QSA....................................................................................448
Adjusting the Keepalive Timer......................................................................................................................................448
View Advanced Interface Information.........................................................................................................................449
Conguring the Interface Sampling Size.............................................................................................................. 449
Conguring the Trac Sampling Size Globally.......................................................................................................... 450
Dynamic Counters......................................................................................................................................................... 452
Clearing Interface Counters....................................................................................................................................452
Enhanced Validation of Interface Ranges...................................................................................................................453
Compressing Conguration Files................................................................................................................................. 453
21 IPv4 Routing............................................................................................................................................ 456
IP Addresses...................................................................................................................................................................457
Implementation Information....................................................................................................................................457
Conguration Tasks for IP Addresses..........................................................................................................................457
Assigning IP Addresses to an Interface.......................................................................................................................457
Conguring Static Routes............................................................................................................................................ 458
Adding description for IPv4 and IPv6 static routes.............................................................................................459
Congure Static Routes for the Management Interface..........................................................................................460
IPv4 Path MTU Discovery Overview.......................................................................................................................... 460
Packet handling during MTU mismatch.................................................................................................................461
Using the Congured Source IP Address in ICMP Messages...................................................................................461
Conguring the ICMP Source Interface................................................................................................................461
Conguring the Duration to Establish a TCP Connection........................................................................................ 462
Enabling Directed Broadcast........................................................................................................................................ 462
Resolution of Host Names............................................................................................................................................462
Enabling Dynamic Resolution of Host Names............................................................................................................463
Specifying the Local System Domain and a List of Domains................................................................................... 463
Conguring DNS with Traceroute................................................................................................................................464
ARP................................................................................................................................................................................. 464
Conguration Tasks for ARP........................................................................................................................................ 465
Conguring Static ARP Entries....................................................................................................................................465
Enabling Proxy ARP.......................................................................................................................................................465
Clearing ARP Cache......................................................................................................................................................466
ARP Learning via Gratuitous ARP............................................................................................................................... 466
Enabling ARP Learning via Gratuitous ARP................................................................................................................466
ARP Learning via ARP Request................................................................................................................................... 466
Conguring ARP Retries............................................................................................................................................... 467
ICMP............................................................................................................................................................................... 468
Conguration Tasks for ICMP...................................................................................................................................... 468
Enabling ICMP Unreachable Messages...................................................................................................................... 468
ICMP Redirects..............................................................................................................................................................468
UDP Helper.....................................................................................................................................................................469
Congure UDP Helper............................................................................................................................................ 469
Important Points to Remember..............................................................................................................................470
Enabling UDP Helper..................................................................................................................................................... 470
Contents
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