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firewall filters (continued)<br />

logging traffic, 316–318<br />

long prefixes, 293–295<br />

matching packet contents, 302–308<br />

negating matches, 308–310<br />

overview, 282–284<br />

rate limiting traffic flow, 327–329<br />

reordering terms, 310–311<br />

restricting inbound router access, 98, 99<br />

router security and, 77<br />

Routing Engines and, 320–327<br />

SNMP and, 138–140<br />

source addresses, 101<br />

unallocated prefix blocks, 295–296<br />

firewall permission bit, 90<br />

firewall-control permission bit, 90<br />

first-fragment match term, 306<br />

flash drive<br />

ad0 as, 44<br />

as alternate boot media, 48<br />

backing up J-series routers, 46, 47<br />

JUNOS installation location, 13<br />

as storage area, 43<br />

Flexible PIC Concentrators (see FPCs)<br />

flood-and-prune model, 578<br />

floppy permission bit, 89<br />

flow control<br />

chaining polices and, 298<br />

load-balancing traffic, 270–272<br />

purpose, 197, 219<br />

forwarding<br />

defined, 248<br />

MPLS, 482<br />

RPF, 266–269<br />

static routes and, 562<br />

verifying, 518<br />

VPN-IPv4 addresses and, 554<br />

forwarding equivalence classes (see FECs)<br />

forwarding information base (FIB), 247<br />

forwarding plane, 248<br />

forwarding tables<br />

active routes, 250<br />

active routes and, 515<br />

aggregate routes and, 270<br />

blackholing routes, 265<br />

displaying routes in, 259–263<br />

installing routes from, 546–548<br />

IS-IS and, 361<br />

labels in, 516<br />

load-balancing traffic flows, 271, 474,<br />

475<br />

MPLS, 483<br />

RIP and, 337<br />

Routing Engines, 247<br />

VRF tables and, 555<br />

FPCs (Flexible PIC Concentrators)<br />

interfaces and, 191, 192<br />

protecting, 236<br />

router configuration and, 55, 59<br />

fragment-flags match term, 305<br />

fragment-offset match term, 305<br />

frame checksum size (FCS), 226, 234<br />

Frame Relay<br />

configuring neighbors, 385<br />

configuring on T1 interface, 231–232<br />

label-switched paths and, 480<br />

frame-relay encapsulation, 231<br />

FreeBSD operating system<br />

checking NTP status, 189<br />

JUNOS software and, 2, 55<br />

message logging, 174<br />

monitoring interfaces, 200<br />

ntpd utility, 182<br />

time zone function, 183<br />

FRUs (field-replaceable units), 59, 142–144<br />

FTP<br />

enabling on routers, 50<br />

encyrption and, 50<br />

installing software from servers, 49<br />

router security and, 73, 76, 77<br />

ftp facility, 163, 174<br />

FTP facility code, 163<br />

full-duplex mode, 192, 197, 219<br />

fwdd (forwarding) process, 318<br />

fxp0 interface<br />

enabling access, 212–215<br />

logging messages and, 173<br />

MPLS and, 504, 505<br />

overview, 13<br />

redundant Routing Engines and, 66<br />

Routing Engines and, 241<br />

synchronizing time and, 184<br />

fxp1 interface, 248<br />

G<br />

gateways, 221–222<br />

(see also EGPs; IGPs)<br />

Get request (SNMP), 130, 131<br />

GetBulk request (SNMP), 129, 130, 132<br />

GetNext request (SNMP), 130, 132, 135<br />

Gigabit Ethernet interface<br />

activating, 217–219<br />

link aggregation, 223<br />

632 | Index<br />

This is the Title of the Book, eMatter Edition<br />

Copyright © 2008 O’Reilly & Associates, Inc. All rights reserved.

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