Hello,Can some help me figure out once and for all what this requirement means: Configure so that ONLY R5 places a call R5 is the remote router and R1 the hub router. This is what I thought I understood regarding the above requirement. Only configure the dialer map statement on the remote side NOT the hub side. I have verified this with Solie's examples on ISDN. This is correct but it just does not work!! Why??A dialer map statement is also needed on the hub side for it to respond to pings from the remote side. The moment I remove the dialer map statement on the hub side, pings start dropping. Can some one help me once and for all? The reason why I ask is: If this same requirement is asked in the Lab, points will be deducted if I use the dialer map statement in the hub side but then my goal would be to get points for working configs and this is the only way to get it to work!! Here goes: using dialer watch as a backup method.Hub side config:R1-TS#interface BRI0/0 ip address 133.10.30.1 255.255.255.0 no ip mroute-cache dialer map ip 133.10.30.5 broadcast 5553000 dialer-group 1 isdn spid1 0555100001 5551000 isdn spid2 0555200001 5552000 Remote side config:R5-RTD#ri b0/0 interface BRI0/0 description to R1-Hub rtr ip address 133.10.30.5 255.255.255.0 dialer map ip 133.10.1.0 broadcast 5551000 dialer map ip 133.10.10.0 broadcast 5551000 dialer map ip 133.10.30.1 broadcast 5551000 dialer watch-group 1 dialer-group 1 isdn switch-type basic-ni isdn spid1 0555300001 5553000 isdn spid2 0555400001 5554000 access-list 101 deny ospf any any access-list 101 permit ip any any dialer watch-list 1 ip 133.10.1.0 255.255.255.224 dialer watch-list 1 ip 133.10.10.0 255.255.255.0 dialer-list 1 protocol ip list 101 R1 is connected to R4 via Frame and R4 is connected to R5 via EthernetShut the F0/0 intf. on R5, Routes watched disappear, Dialer watch works it magic and now routes are learned via isdn:on R5:O 133.10.10.0/24 [110/1626] via 133.10.30.1, 00:00:04, BRI0/0 C 133.10.5.0/24 is directly connected, Loopback0 O E2 133.10.4.0/28 [110/20] via 133.10.30.1, 00:00:04, BRI0/0 O E2 133.10.1.0/27 [110/20] via 133.10.30.1, 00:00:04, BRI0/0 C 133.10.30.0/24 is directly connected, BRI0/0 Initial pings work:R5-RTD#ping ip Target IP address: 133.10.1.1 Repeat count [5]: 500 Datagram size [100]: Timeout in seconds [2]: Extended commands [n]: Sweep range of sizes [n]: Type escape sequence to abort. Sending 500, 100-byte ICMP Echos to 133.10.1.1, timeout is 2 seconds: !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!! In the meantime, removed the dialer map statement on the hub side: Pings drop:R1-TS(config)#int b0/0 R1-TS(config-if)#no dialer map ip 133.10.30.5 broad 5553000 On R5:R5-RTD#ping 133.10.1.1Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 133.10.1.1, timeout is 2 seconds: .... Success rate is 0 percent (0/5) Add the dialer map statement back on R1: Pings start working again:R5-RTD#ping 133.10.1.1Type escape sequence to abort. Sending 5, 100-byte ICMP Echos to 133.10.1.1, timeout is 2 seconds: .!!!! Success rate is 80 percent (4/5), round-trip min/avg/max = 32/32/32 ms Bring back the F0/0 intf. up again on R5: Routes now learned via Ethernet;R5-RTD#r 133.10.0.0/16 is variably subnetted, 6 subnets, 4 masks O 133.10.10.0/24 [110/74] via 133.10.40.4, 00:00:11, FastEthernet0/0 C 133.10.5.0/24 is directly connected, Loopback0 O E2 133.10.4.0/28 [110/20] via 133.10.40.4, 00:00:11, FastEthernet0/0 O E2 133.10.1.0/27 [110/20] via 133.10.40.4, 00:00:11, FastEthernet0/0 Any ISDN experts?? I have tried it numerous times!! Same result. Was just expecting a different result? Now is this what the definition of insanity really means ;-> Thank you.Sincerely,Nuts ;-)
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