Topic: DECbrouter90 example of V10.x CLNS using BACKUP X.25 circuits This is an example of how to use the backup delay and backup load features of the DECbrouter90 while running multiple CLNS circuits over an X.25 cloud. **************************** EXAMPLE ******************************************* ------------------------------------------------- |BRUTB#show config | |! | |no ip routing | |clns routing | |! | |! This command enables the CLNS routing | |! protocol. | |! | |interface Ethernet0 | |! | |interface Serial0 | |! | |backup delay 5 10 | |! | |! This command tells the DBR90 to switch to the| |! backup circuit after 5 seconds of interface | |! serial 0 being down. It also tells the DBR90 | |! to start using the serial 0 interface 10 | |! 10 seconds after it regains connectivity. | |! | |backup interface Serial1 | |! | |! This command tells the DBR90 which interface | |! to use as a backup interface in case serial | |! 0 goes down. | |! | |backup load 70 50 | |! | |! This command tells the DBR90 that if the load| |! on interface serial 0 goes above 70% over a | |! 5 minute period, to bring up the backup | |! interface (serial 1) and start load balancing| |! the traffic. It also signifies that if the | |! traffic drops below 50% over a 5 minute | |! period to stop using the backup circuit. | |! Note: As with CLNS, the protocol you are | |! running over these two circuits must be | |! of path splitting. | |! | |encapsulation x25 | |! | |! This sets the encapsulation on this interface| |! to X.25 DTE mode. Reference the DOCs for | |! other appropriate X.25 characteristics. | |! | |clns is-neighbor 49.0003.0800.2ba6.2616.00 1111| |! | |! This establishes a static map to the IS | |! neighbor and it's associated DTE address. | |! | |clns router isis | |! | |! This enables CLNS routing on this circuit. | |! | |x25 address 3333 | |! | |! This command provides a DTE address for this | |! X.25 interface. | |! | |x25 map CLNS 1111 | |! | |! This command appears automatically when the | |! CLNS route command is entered. | |! | |interface Serial1 | |! | |encapsulation x25 | |! | |! This sets the encapsulation on this interface| |! to X.25 DTE mode. Reference the DOCs for | |! other appropriate X.25 characteristics. | |! | |clns is-neighbor 49.0003.0800.2ba6.2616.00 2222| |! | |! This establishes a static map to the IS | |! neighbor and it's associated DTE address. | |! | |clns router isis | |! | |! This enables CLNS routing on this circuit. | |! | |x25 address 4444 | |! | |! This command provides a DTE address for this | |! X.25 interface. | |! | |x25 map CLNS 2222 | |! | |! This command appears automatically when the | |! CLNS route command is entered. | |! | |router isis | |! | |! This command is required for setting | |! characteristics for the IS-IS process. | |! | |net 49.0001.0800.2ba6.3c34.00 | |! | |! This command sets the OSI NET or NSAP for | |! this DBR90. | |! | |is-type level-2-only | |! | |! This command makes this DBR90 a level II | |! IS only. | |! | |clns route 49.0003 Serial0 1111 | |! | |! This command places a static route in the | |! CLNS routing table of the OSI area address | |! 49.0003 reachable by placing a X.25 call out | |! interface serial 0 to remote DTE #1111 | |! | |clns route 49.0003 Serial1 2222 | |! | |! This command places a static route in the | |! CLNS routing table of the OSI area address | |! 49.0003 reachable by placing a X.25 call out | |! interface serial 0 to remote DTE #2222 | |! | ------------------------------------------------- | S0 X25 add=3333 | S1 X25 add=4444 | | |----- (X.25 CLOUD) ----| | | | S0 X25 add=1111 | S1 X25 add=2222 ------------------------------------------------- |BRUTC#show config | |! | |no ip routing | |clns routing | |! | |interface Ethernet0 | |! | |interface Serial0 | |backup delay 5 10 | |backup interface Serial1 | |backup load 70 50 | |encapsulation x25 | |clns is-neighbor 49.0001.0800.2ba6.3c34.00 3333| |clns router isis | |x25 address 1111 | |x25 map CLNS 3333 | |! | |interface Serial1 | |encapsulation x25 | |clns is-neighbor 49.0001.0800.2ba6.3c34.00 4444| |clns router isis | |x25 address 2222 | |x25 map CLNS 4444 | |! | |router isis | |net 49.0003.0800.2ba6.2616.00 | |is-type level-2-only | |! | |clns route 49.0001 Serial0 3333 | |clns route 49.0001 Serial1 4444 | ------------------------------------------------- ************************* Beggining of BRUTB output **************************** BRUTB#show inter s 0 Serial0 is up, line protocol is up BRUTB#show inter s 1 Serial1 is standby mode, line protocol is down BRUTB#show clns route CLNS Prefix Routing Table 49.0001 [110/0] via 0800.2BA6.3C34, IS-IS, Up 49.0003 [10/0] via 1111, Serial0, Static via 2222, Serial1, Static (Down) 49.0001.0800.2ba6.3c34.00, Local NET Entry BRUTB#ping clns 49.0003.0800.2ba6.2616.00 Type escape sequence to abort. Sending 5, 100-byte CLNS Echos with timeout 2 seconds !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 44/47/56 ms %LINK-3-UPDOWN: Interface Serial0, changed state to down %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0, changed state to down %LINK-3-UPDOWN: Interface Serial1, changed state to up %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1, changed state to up BRUTB#show inter s 0 Serial0 is down, line protocol is down BRUTB#show inter s 1 Serial1 is up, line protocol is up BRUTB# show clns route CLNS Prefix Routing Table 49.0001 [110/0] via 0800.2BA6.3C34, IS-IS, Up 49.0003 [10/0] via 1111, Serial0, Static (Down) via 2222, Serial1, Static 49.0001.0800.2ba6.3c34.00, Local NET Entry BRUTB#ping clns 49.0003.0800.2ba6.2616.00 Type escape sequence to abort. Sending 5, 100-byte CLNS Echos with timeout 2 seconds !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 8/11/12 ms BRUTB#show version Cisco Internetwork Operating System Software IOS (tm) 3000 Software (IGS-BPX-L), Version 10.0(10), RELEASE SOFTWARE (fc1) Copyright (c) 1986-1994 by cisco Systems, Inc. Compiled Tue 23-May-95 23:59 by dougs Image text-base: 0x0301FEBC, data-base: 0x00001000 **************************** end of BRUTB output ******************************* ************************* Beggining of BRUTC output **************************** BRUTC#show inter s 0 Serial0 is up, line protocol is up BRUTC#show inter s 1 Serial1 is standby mode, line protocol is down BRUTC#show clns route CLNS Prefix Routing Table 49.0001 [10/0] via 3333, Serial0, Static via 4444, Serial1, Static (Down) 49.0003 [110/0] via 0800.2BA6.2616, IS-IS, Up 49.0003.0800.2ba6.2616.00, Local NET Entry BRUTC#ping clns 49.0001.0800.2ba6.3c34.00 Type escape sequence to abort. Sending 5, 100-byte CLNS Echos with timeout 2 seconds !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 44/44/48 ms %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial0, changed state to down %LINK-3-UPDOWN: Interface Serial0, changed state to down %LINK-3-UPDOWN: Interface Serial1, changed state to up %LINEPROTO-5-UPDOWN: Line protocol on Interface Serial1, changed state to up BRUTC#show inter s 0 Serial0 is down, line protocol is down BRUTC#show inter s 1 Serial1 is up, line protocol is up BRUTC#show clns route CLNS Prefix Routing Table 49.0001 [10/0] via 3333, Serial0, Static (Down) via 4444, Serial1, Static 49.0003 [110/0] via 0800.2BA6.2616, IS-IS, Up 49.0003.0800.2ba6.2616.00, Local NET Entry BRUTC#ping clns 49.0001.0800.2ba6.3c34.00 Type escape sequence to abort. Sending 5, 100-byte CLNS Echos with timeout 2 seconds !!!!! Success rate is 100 percent (5/5), round-trip min/avg/max = 8/10/16 ms BRUTC#show version Cisco Internetwork Operating System Software IOS (tm) 3000 Software (IGS-BPX-L), Version 10.0(10), RELEASE SOFTWARE (fc1) Copyright (c) 1986-1994 by cisco Systems, Inc. Compiled Tue 23-May-95 23:59 by dougs Image text-base: 0x0301FEBC, data-base: 0x00001000 **************************** end of BRUTC output *******************************