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Martin Hope
Flint
Asked: 2012-07-03 06:47:23 +0800 CST
  • 6

I got this packet captured with tcpdump but I'm not sure how to use the --hex-string param to match the packet. Can someone show me how to do it?

11:18:26.614537 IP (tos 0x0, ttl 17, id 19245, offset 0, flags [DF], proto UDP (17), length 37)
    x.x.187.207.1234 > x.x.152.202.6543: [no cksum] UDP, length 9
        0x0000:  f46d 0425 b202 000a b853 22cc 0800 4500  .m.%.....S"...E.
        0x0010:  0025 4b2d 4000 1111 0442 5ebe bbcf 6701  .%[email protected]^...g.
        0x0020:  98ca 697d 6989 0011 0000 ffff ffff 5630  ..i}i.........V0
        0x0030:  3230 3300 0000 0000 0000 0000            203.........
tcpdump iptables packet
Martin Hope
DJDMorrison
Asked: 2012-03-28 13:33:05 +0800 CST
  • 5

I have the following set up in Packet Tracer:

enter image description here

I am trying to configure frame-relay between the RTR-EDGE router, the RTR_ENG router and the RTR_SAL router using a frame-relay switch simulation (the cloud). I have used the following commands:

RTR_EDGE(config)#int s3/0
RTR_EDGE(config-if)#encap frame-relay
RTR_EDGE(config-if)#frame-relay map ip 172.20.1.109 101 broadcast
RTR_EDGE(config-if)#frame-relay map ip 172.20.1.113 102 broadcast
RTR_EDGE(config-if)#ip address 172.20.1.117 255.255.255.252
RTR_EDGE(config-if)#frame-relay lmi-type cisco
RTR_EDGE(config-if)#no shutdown

RTR_ENG(config)#int s0/0
RTR_ENG(config-if)#encap frame-relay
RTR_ENG(config-if)#frame-relay map ip 172.20.1.117 200 broadcast
RTR_EDGE(config-if)#ip address 172.20.1.109 255.255.255.252
RTR_ENG(config-if)#frame-relay lmi-type cisco
RTR_ENG(config-if)#no shutdown

RTR_SAL(config)#int s0/0
RTR_SAL(config-if)#encap frame-relay
RTR_SAL(config-if)#frame-relay map ip 172.20.1.117 200 broadcast
RTR_SAL(config-if)#ip address 172.20.1.113 255.255.255.252
RTR_SAL(config-if)#frame-relay lmi-type cisco
RTR_SAL(config-if)#no shutdown

And the circuit appears in the map of each router:

RTR_EDGE#show frame-relay map
Serial3/0 (up): ip 172.20.1.109 dlci 101, static, broadcast, CISCO, status defined, active
Serial3/0 (up): ip 172.20.1.113 dlci 102, static, broadcast, CISCO, status defined, active

However, neither of the three routers can ping each other? Does anyone have any ideas as to why not? I have looked at a few tutorials on the internet and their commands are the same as mine, however theirs works and mine doesn't..

Any help would be appreciated! Thanks

cisco packet