Administrator Guide

Monitoring and Maintaining Interfaces....................................................................................................................... 369
Maintenance Using TDR......................................................................................................................................... 370
Splitting QSFP Ports to SFP+ Ports........................................................................................................................... 370
Merging SFP+ Ports to QSFP 40G Ports..............................................................................................................371
Congure the MTU Size on an Interface...............................................................................................................371
Conguring wavelength for 10–Gigabit SFP+ optics................................................................................................ 372
Converting a QSFP or QSFP+ Port to an SFP or SFP+ Port.................................................................................. 372
Important Points to Remember..............................................................................................................................373
Example Scenarios...................................................................................................................................................373
Layer 2 Flow Control Using Ethernet Pause Frames.................................................................................................373
Enabling Pause Frames............................................................................................................................................374
Congure MTU Size on an Interface........................................................................................................................... 374
Port-Pipes.......................................................................................................................................................................375
Auto-Negotiation on Ethernet Interfaces................................................................................................................... 375
Setting the Speed and Duplex Mode of Ethernet Interfaces.............................................................................376
View Advanced Interface Information......................................................................................................................... 378
Conguring the Interface Sampling Size...............................................................................................................378
Conguring the Trac Sampling Size Globally.....................................................................................................379
Dynamic Counters.................................................................................................................................................... 381
Enhanced Control of Remote Fault Indication Processing....................................................................................... 382
25 Internet Protocol Security (IPSec).......................................................................................................... 383
Conguring IPSec .........................................................................................................................................................383
26 IPv4 Routing............................................................................................................................................385
IP Addresses...................................................................................................................................................................385
Implementation Information....................................................................................................................................386
Conguration Tasks for IP Addresses....................................................................................................................386
IPv4 Path MTU Discovery Overview.......................................................................................................................... 388
Using the Congured Source IP Address in ICMP Messages..................................................................................389
Conguring the ICMP Source Interface............................................................................................................... 389
Conguring the Duration to Establish a TCP Connection........................................................................................ 389
Enabling Directed Broadcast........................................................................................................................................ 390
Resolution of Host Names............................................................................................................................................390
Enabling Dynamic Resolution of Host Names......................................................................................................390
Specifying the Local System Domain and a List of Domains.............................................................................. 391
Conguring DNS with Traceroute.......................................................................................................................... 391
ARP..................................................................................................................................................................................392
Conguration Tasks for ARP.................................................................................................................................. 392
ARP Learning via Gratuitous ARP................................................................................................................................394
ARP Learning via ARP Request................................................................................................................................... 394
Conguring ARP Retries...............................................................................................................................................395
ICMP............................................................................................................................................................................... 396
Conguration Tasks for ICMP................................................................................................................................396
UDP Helper.....................................................................................................................................................................396
Congure UDP Helper............................................................................................................................................ 396
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