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[ Pobierz całość w formacie PDF ]
.Turbo flooding may not be appropriate on routers that are already under highCPU load or that must also perform other CPU-intensive activities.http://www.cisco.com/cpress/cc/td/cpress/ccie/ndcs798/nd2019.htm (7 of 12) [9/16/2000 5:17:12 PM] UDP Broadcast FloodingThe following commands configure UDP flooding on Router A.Because this configuration does notspecify a lower path cost than the default and because the configuration of Router B specifies a lowercost than the default with regard to UDP flooding, Router A acts as a backup to Router B.Because thisconfiguration specifies an IRDP preference of 100 and because Router B specifies a IRDP preference of90 (ip irdp preference 90), Router A forwards unicast traffic from the trader networks, and Router B isthe backup for unicast traffic forwarding.!Router A:ip forward-protocol spanning-treeip forward-protocol udp 111ip forward-protocol udp 3001ip forward-protocol udp 3002ip forward-protocol udp 3003ip forward-protocol udp 3004ip forward-protocol udp 3005ip forward-protocol udp 3006ip forward-protocol udp 5020ip forward-protocol udp 5021ip forward-protocol udp 5030ip forward-protocol udp 5002ip forward-protocol udp 1027ip forward-protocol udp 657!interface ethernet 0ip address 200.200.200.61 255.255.255.0ip broadcast-address 200.200.200.255no mop enabled!interface ethernet 1ip address 164.53.7.61 255.255.255.192ip broadcast-address 164.53.7.63ip irdpip irdp maxadvertinterval 60ip irdp minadvertinterval 45ip irdp holdtime 60ip irdp preference 100bridge-group 1bridge-group 1 input-type-list 201no mop enabled!interface ethernet 2ip address 164.53.8.61 255.255.255.192ip broadcast-address 164.53.8.63ip irdpip irdp maxadvertinterval 60ip irdp minadvertinterval 45http://www.cisco.com/cpress/cc/td/cpress/ccie/ndcs798/nd2019.htm (8 of 12) [9/16/2000 5:17:12 PM] UDP Broadcast Floodingip irdp holdtime 60ip irdp preference 100bridge-group 1bridge-group 1 input-type-list 201no mop enabled!interface ethernet 3ip address 164.53.9.61 255.255.255.192ip broadcast-address 164.53.9.63ip irdpip irdp maxadvertinterval 60ip irdp minadvertinterval 45ip irdp holdtime 60ip irdp preference 100bridge-group 1bridge-group 1 input-type-list 201no mop enabled!interface ethernet 4ip address 164.53.10.61 255.255.255.192ip broadcast-address 164.53.10.63ip irdpip irdp maxadvertinterval 60ip irdp minadvertinterval 45ip irdp holdtime 60ip irdp preference 100bridge-group 1bridge-group 1 input-type-list 201no mop enabled!router igrp 1network 164.53.0!ip name-server 255.255.255.255snmp-server community public RWsnmp-server host 164.53.7.15 publicbridge 1 protocol decbridge 1 priority 255access-list 201 deny 0xFFFF 0x0000The following commands configure UDP flooding on Router B.Because this configuration specifies alower path cost than the default (bridge-group 1 path-cost 50) and because the configuration of RouterA accepts the default, Router B forwards UDP packets.Because this configuration specifies an IRDPpreference of 90 (ip irdp preference 90) and because Router A specifies a IRDP preference of 100,Router B acts as the backup for Router A for forwarding unicast traffic from the trader networks.!Router Bhttp://www.cisco.com/cpress/cc/td/cpress/ccie/ndcs798/nd2019.htm (9 of 12) [9/16/2000 5:17:12 PM] UDP Broadcast Floodingip forward-protocol spanning-treeip forward-protocol udp 111ip forward-protocol udp 3001ip forward-protocol udp 3002ip forward-protocol udp 3003ip forward-protocol udp 3004ip forward-protocol udp 3005ip forward-protocol udp 3006ip forward-protocol udp 5020ip forward-protocol udp 5021ip forward-protocol udp 5030ip forward-protocol udp 5002ip forward-protocol udp 1027ip forward-protocol udp 657!interface ethernet 0ip address 200.200.200.62 255.255.255.0ip broadcast-address 200.200.200.255no mop enabled!interface ethernet 1ip address 164.53.7.62 255.255.255.192ip broadcast-address 164.53.7.63ip irdpip irdp maxadvertinterval 60ip irdp minadvertinterval 45ip irdp holdtime 60ip irdp preference 90bridge-group 1bridge-group 1 path-cost 50bridge-group 1 input-type-list 201no mop enabled!interface ethernet 2ip address 164.53.8.62 255.255.255.192ip broadcast-address 164.53.8.63ip irdpip irdp maxadvertinterval 60ip irdp minadvertinterval 45ip irdp holdtime 60ip irdp preference 90bridge-group 1bridge-group 1 path-cost 50bridge-group 1 input-type-list 201no mop enabled!http://www.cisco.com/cpress/cc/td/cpress/ccie/ndcs798/nd2019.htm (10 of 12) [9/16/2000 5:17:13 PM] UDP Broadcast Floodinginterface ethernet 3ip address 164.53.9.62 255.255.255.192ip broadcast-address 164.53.9.63ip irdpip irdp maxadvertinterval 60ip irdp minadvertinterval 45ip irdp holdtime 60ip irdp preference 90bridge-group 1bridge-group 1 path-cost 50bridge-group 1 input-type-list 201no mop enabled!interface ethernet 4ip address 164.53.10.62 255.255.255.192ip broadcast-address 164.53.10.63ip irdpip irdp maxadvertinterval 60ip irdp minadvertinterval 45ip irdp holdtime 60ip irdp preference 90bridge-group 1bridge-group 1 path-cost 50bridge-group 1 input-type-list 201no mop enabled!router igrp 1network 164.53.0!ip name-server 255.255.255.255snmp-server community public RWsnmp-server host 164.53.7.15 publicbridge 1 protocol decbridge 1 priority 255access-list 201 deny 0xFFFF 0x0000Note In releases prior to Cisco IOS Software Release 10.2, the spanning tree algorithm prevented theforwarding of local broadcast addresses, but allowed the forwarding of local secondary addresses.Forthat reason, when running a release prior to Cisco IOS Software Release 10.2, a secondary address mustbe specified for each Ethernet interface that will forward local broadcast address packets [ Pobierz całość w formacie PDF ]
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.Turbo flooding may not be appropriate on routers that are already under highCPU load or that must also perform other CPU-intensive activities.http://www.cisco.com/cpress/cc/td/cpress/ccie/ndcs798/nd2019.htm (7 of 12) [9/16/2000 5:17:12 PM] UDP Broadcast FloodingThe following commands configure UDP flooding on Router A.Because this configuration does notspecify a lower path cost than the default and because the configuration of Router B specifies a lowercost than the default with regard to UDP flooding, Router A acts as a backup to Router B.Because thisconfiguration specifies an IRDP preference of 100 and because Router B specifies a IRDP preference of90 (ip irdp preference 90), Router A forwards unicast traffic from the trader networks, and Router B isthe backup for unicast traffic forwarding.!Router A:ip forward-protocol spanning-treeip forward-protocol udp 111ip forward-protocol udp 3001ip forward-protocol udp 3002ip forward-protocol udp 3003ip forward-protocol udp 3004ip forward-protocol udp 3005ip forward-protocol udp 3006ip forward-protocol udp 5020ip forward-protocol udp 5021ip forward-protocol udp 5030ip forward-protocol udp 5002ip forward-protocol udp 1027ip forward-protocol udp 657!interface ethernet 0ip address 200.200.200.61 255.255.255.0ip broadcast-address 200.200.200.255no mop enabled!interface ethernet 1ip address 164.53.7.61 255.255.255.192ip broadcast-address 164.53.7.63ip irdpip irdp maxadvertinterval 60ip irdp minadvertinterval 45ip irdp holdtime 60ip irdp preference 100bridge-group 1bridge-group 1 input-type-list 201no mop enabled!interface ethernet 2ip address 164.53.8.61 255.255.255.192ip broadcast-address 164.53.8.63ip irdpip irdp maxadvertinterval 60ip irdp minadvertinterval 45http://www.cisco.com/cpress/cc/td/cpress/ccie/ndcs798/nd2019.htm (8 of 12) [9/16/2000 5:17:12 PM] UDP Broadcast Floodingip irdp holdtime 60ip irdp preference 100bridge-group 1bridge-group 1 input-type-list 201no mop enabled!interface ethernet 3ip address 164.53.9.61 255.255.255.192ip broadcast-address 164.53.9.63ip irdpip irdp maxadvertinterval 60ip irdp minadvertinterval 45ip irdp holdtime 60ip irdp preference 100bridge-group 1bridge-group 1 input-type-list 201no mop enabled!interface ethernet 4ip address 164.53.10.61 255.255.255.192ip broadcast-address 164.53.10.63ip irdpip irdp maxadvertinterval 60ip irdp minadvertinterval 45ip irdp holdtime 60ip irdp preference 100bridge-group 1bridge-group 1 input-type-list 201no mop enabled!router igrp 1network 164.53.0!ip name-server 255.255.255.255snmp-server community public RWsnmp-server host 164.53.7.15 publicbridge 1 protocol decbridge 1 priority 255access-list 201 deny 0xFFFF 0x0000The following commands configure UDP flooding on Router B.Because this configuration specifies alower path cost than the default (bridge-group 1 path-cost 50) and because the configuration of RouterA accepts the default, Router B forwards UDP packets.Because this configuration specifies an IRDPpreference of 90 (ip irdp preference 90) and because Router A specifies a IRDP preference of 100,Router B acts as the backup for Router A for forwarding unicast traffic from the trader networks.!Router Bhttp://www.cisco.com/cpress/cc/td/cpress/ccie/ndcs798/nd2019.htm (9 of 12) [9/16/2000 5:17:12 PM] UDP Broadcast Floodingip forward-protocol spanning-treeip forward-protocol udp 111ip forward-protocol udp 3001ip forward-protocol udp 3002ip forward-protocol udp 3003ip forward-protocol udp 3004ip forward-protocol udp 3005ip forward-protocol udp 3006ip forward-protocol udp 5020ip forward-protocol udp 5021ip forward-protocol udp 5030ip forward-protocol udp 5002ip forward-protocol udp 1027ip forward-protocol udp 657!interface ethernet 0ip address 200.200.200.62 255.255.255.0ip broadcast-address 200.200.200.255no mop enabled!interface ethernet 1ip address 164.53.7.62 255.255.255.192ip broadcast-address 164.53.7.63ip irdpip irdp maxadvertinterval 60ip irdp minadvertinterval 45ip irdp holdtime 60ip irdp preference 90bridge-group 1bridge-group 1 path-cost 50bridge-group 1 input-type-list 201no mop enabled!interface ethernet 2ip address 164.53.8.62 255.255.255.192ip broadcast-address 164.53.8.63ip irdpip irdp maxadvertinterval 60ip irdp minadvertinterval 45ip irdp holdtime 60ip irdp preference 90bridge-group 1bridge-group 1 path-cost 50bridge-group 1 input-type-list 201no mop enabled!http://www.cisco.com/cpress/cc/td/cpress/ccie/ndcs798/nd2019.htm (10 of 12) [9/16/2000 5:17:13 PM] UDP Broadcast Floodinginterface ethernet 3ip address 164.53.9.62 255.255.255.192ip broadcast-address 164.53.9.63ip irdpip irdp maxadvertinterval 60ip irdp minadvertinterval 45ip irdp holdtime 60ip irdp preference 90bridge-group 1bridge-group 1 path-cost 50bridge-group 1 input-type-list 201no mop enabled!interface ethernet 4ip address 164.53.10.62 255.255.255.192ip broadcast-address 164.53.10.63ip irdpip irdp maxadvertinterval 60ip irdp minadvertinterval 45ip irdp holdtime 60ip irdp preference 90bridge-group 1bridge-group 1 path-cost 50bridge-group 1 input-type-list 201no mop enabled!router igrp 1network 164.53.0!ip name-server 255.255.255.255snmp-server community public RWsnmp-server host 164.53.7.15 publicbridge 1 protocol decbridge 1 priority 255access-list 201 deny 0xFFFF 0x0000Note In releases prior to Cisco IOS Software Release 10.2, the spanning tree algorithm prevented theforwarding of local broadcast addresses, but allowed the forwarding of local secondary addresses.Forthat reason, when running a release prior to Cisco IOS Software Release 10.2, a secondary address mustbe specified for each Ethernet interface that will forward local broadcast address packets [ Pobierz całość w formacie PDF ]