R

RADIUS (Remote Access Dial-In User Service), 212 attributes, 214 configuring, 215-217 features, 215

security protocol support, 214 versus TACACAS+, 224-225 RAM, 151

RARP (Reverse Address Resolution Protocol), 46 RCPT command (SMTP), 128 read command (SNMP), 123 recovering lost or unknown passwords,

174-179 redundancy, HSRP, 47 configuring, 50-51 enabling, 49 remote access, VPDNs, 229-231 configuring, 231-235

remote router access, 179 rename command (DOS), 284 reporting security breaches, Internet newsgroups, 368 rerouting packets, 369

resolving IP addresses to MAC addresses, ARP, 4546

rm command (UNIX), 284 rmdir command (UNIX), 287 ROM (read-only memory), 153 ROM boot mode (IOS), 157 root bridge elections, 30 root bridges, 31 route command, 296 routers hardware configuration registers, 154-156 CPU, 152 interfaces, 156 NVRAM, 151 RAM, 151 ROM, 153 System Flash, 151 remote access, 179 routing protocols, 53-55 BGP, 76

attributes, 77-78 configuring, 79 messages, 76 default administrative distances, 56-57 EIGRP, 62-63

example configuration, 64-66 OSPF, 66-68

example configuration, 71-75 multiple area configuration, 69-70 single area configuration, 66, 69 virtual links, 71 RIP, 57-59

configuring, 59-61

routing tables, viewing, 55-56 RSET command (SMTP), 128 RTO (Retransmission Timeout), 63

0 0

Post a comment