I was working with FR in my home lab, and I ran into an interesting problem. This is the first time I've set up a router to function as a FR switch. Here's the scenario.
I am using a 2524 with two five-in-one serial modules as the FR switch to connect two routers with fixed serial ports, a 2503 and a 2509. The PVC is up and active. I can ping from each router, through the FR switch to the router on the other side, but I cannot internally ping the FR interface of the router I am pinging from. After checking around a bit, I learned that pinging a serial interface of the router originating the ping works differently than pinging an ethernet interface. Apperently, serial interfaces cannot responded internally to an interally generated ping -- the ping actually goes out on the wire and comes back. I don't completely understand this, but it is clear the the ping does travel through the external cable. So can anyone tell me why the internal ping to the FR interface doesn't work. It isn't a big deal, but I would like to understand what is going on. Is there a problem with the way I have configured the 2524 as a FR switch? Here are the configurations. START OF CONFIGURATION FOR CISCO 2524 ACTINT AS A FRAME RELAY SWITCH. 2524 EQUIPPED WITH TWO FIVE-IN-ONE SERIAL MODULES. frameswitch#show run Building configuration... Current configuration: ! version 12.0 service timestamps debug uptime service timestamps log uptime no service password-encryption ! hostname frameswitch ! ! ip subnet-zero frame-relay switching ! ! ! interface Ethernet0 ip address 192.168.1.105 255.255.255.0 no ip directed-broadcast ! interface Serial0 no ip address no ip directed-broadcast encapsulation frame-relay no ip mroute-cache clockrate 56000 frame-relay intf-type dce frame-relay route 301 interface Serial1 901 ! interface Serial1 no ip address no ip directed-broadcast encapsulation frame-relay clockrate 56000 frame-relay intf-type dce frame-relay route 901 interface Serial0 301 ! ip classless ! ! line con 0 transport input none line aux 0 line vty 0 4 login ! end START OF CONFIGURATION OF CISCO 2503 CONNECTED TO CISCO 2509 VIA CISCO 2524 ACTING AS A FRAME RELAY SWITCH 2503A#show run Building configuration... Current configuration: ! version 11.0 service password-encryption service udp-small-servers service tcp-small-servers ! hostname 2503A ! enable secret 5 $1$n6HI$CliSp0vBx8d8fUPVllPON. enable password 7 140713181F13253920 ! ! interface Loopback0 ip address 172.16.18.1 255.255.255.0 ! interface Ethernet0 ip address 192.168.1.106 255.255.255.0 ! interface Serial0 ip address 172.16.17.1 255.255.255.0 encapsulation frame-relay no fair-queue frame-relay map ip 172.16.17.2 301 broadcast ! interface Serial1 no ip address shutdown ! interface BRI0 no ip address shutdown ! ! line con 0 password 7 15190A1E08 login line aux 0 password 7 15190A1E08 login transport input all line vty 0 4 password 7 110218171B login ! end START OF CONFIGURATION OF CISCO 2509 CONNECTED TO CISCO 2503 VIA CISCO 2524 ACTING AS A FRAME RELAY SWITCH 2609A#show run Building configuration... Current configuration : 701 bytes ! version 12.2 no service single-slot-reload-enable service timestamps debug uptime service timestamps log uptime no service password-encryption ! hostname 2609A ! logging rate-limit console 10 except errors ! ip subnet-zero no ip finger ! no ip dhcp-client network-discovery ! ! ! ! interface Ethernet0 ip address 192.168.1.107 255.255.255.0 ! interface Serial0 ip address 172.16.17.2 255.255.255.0 encapsulation frame-relay no ip mroute-cache frame-relay map ip 172.16.17.1 901 broadcast ! router rip network 172.16.0.0 network 192.168.1.0 ! ip kerberos source-interface any ip classless no ip http server ! ! ! line con 0 transport input none line 1 8 line aux 0 line vty 0 4 login ! end Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=36743&t=36743 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
