Frederico Madeira wrote: > > Pricilla, > > That is my problem. In A side i have a huawei 1602 router and > in B side > cisco 2600. > Huawei don4t have extended ping (i4ve search in pdf and web and > don4t > found). > Hava any other hint elsewhere extended ping ?
That's strange, but it doesn't matter. You can still do some troubleshooting. Here are some questions to investigate. Why in your testing could Host B send a packet to Host A, but Host B couldn't send a packet to the serial interface on Router A? When Host B sends the traceroute to Host A, it's either sending a UDP or ICMP packet, depending on its operating system. That seems to work. All layers are working. It can send the upper-layer packet and it has a route to Host A. It appears that Host B can't send an ICMP TTL Exceeded message to the serial interface on Router A, however. That's the crux of the problem. (Traceroute depends on the routers and target host sending an ICMP TTL Exceeded message). What other testing have you done with Host B trying to reach the serial interface on Router A? Can Host B ping or traceroute to that address? At what layer does this problem reside? Does Host B really try to send the message? (Use Ethereal to see if it does.) If not, does it have a firewall that's blocking it? Probably not, since it can send a TTL Exceeded to Host A. So it's probably a network-layer problem. Does it have a route to the destiantation IP address (router A's serial interface?) What does "route print" tell you? What does "ipconfig/all" tell you? (assuming Windows) If UNIX, try route -n, netstat -rn, ifconfig. Of is the router somehow blocking the TTL Exceeded? That doesn't seem likely since it works in the other cases. I would focus on Host B. I think he's confused.... It could be a bug in the router, but something seems odd at Host B, as a first guess. Priscilla > > Tanks. > > > Frederico Madeira > Coordenador de Suporte > N. Landim Comircio Ltda > PABX: 81. 3497.3029 > e-mail: [EMAIL PROTECTED] > > ----- Original Message ----- > From: "Priscilla Oppenheimer" > To: > Sent: Sunday, June 22, 2003 9:57 PM > Subject: Re: Ping Problems [7:70980] > > > > Frederico Madeira wrote: > > > > > > Dave > > > > > > A: GW= 10.61.2.1 / HOST: 10.61.2.2 > > > B: GW= 10.60.60.9 / HOST: 10.60.60.8 > > > A --> B > > > > > > Traceroute from host in A to host B: > > > > > > [EMAIL PROTECTED] tef]$ traceroute 10.60.60.8 > > > traceroute to 10.60.60.8 (10.60.60.8), 30 hops max, 40 byte > > > packets > > > 1 10.61.2.1 (10.61.2.1) 1.773 ms 1.642 ms 1.823 ms > > > 2 172.1.0.1 (172.1.0.1) 29.812 ms 48.233 ms 37.402 ms > > > 3 10.60.60.8 (10.60.60.8) 36.571 ms 47.847 ms 38.178 ms > > > > > > Traceroute from router on A to host B > > > > The source address on this packet from Router A was > 172.1.2.1, guessing > from > > what else you have told us. > > > > > L002>trace 10.60.60.8 > > > traceroute to 10.60.60.8(10.60.60.8) 30 hops max,40 bytes > > > packet > > > 1 172.1.0.1 60 ms 49 ms 38 ms > > > 2 * * > > > > Host B doesn't know how to send the necessary packet back to > 172.1.2.1. > > Check Host B's routing table and configuration. > > > > That's what MADMAN was getting at. Also, he suggested you try > a ping or > > traceroute from Router A using Router A's IP address on its > Ethernet side. > > It will probably work then. > > > > By default the router uses the IP address for the closest > exit interface. > > You can change the source address that the router uses by > using extended > > ping or extended traceroute. Type ping or trace and enter. > That will take > > you into the extended mode where you can set the source > address. > > > > Keep us posted. I'm curious to know what you find. Thanks, > > > > Priscilla > > > > > > > > B --> A > > > > > > Traceroute from host in B to host A: > > > [EMAIL PROTECTED] /]# traceroute 10.61.2.2 > > > traceroute to 10.61.2.2 (10.61.2.2), 30 hops max, 38 byte > > > packets > > > 1 10.60.60.9 (10.60.60.9) 1.322 ms 0.945 ms 0.952 ms > > > 2 172.1.2.1 (172.1.2.1) 34.040 ms 30.605 ms 30.743 ms > > > 3 10.61.2.2 (10.61.2.2) 34.314 ms 32.899 ms 33.078 ms > > > > > > Traceroute from router on B to host A > > > FarmPobres>trace 10.61.2.2 > > > > > > Type escape sequence to abort. > > > Tracing the route to 10.61.2.2 > > > > > > 1 172.1.2.1 28 msec 24 msec 28 msec > > > 2 10.61.2.2 28 msec 24 msec 24 msec > > > > > > Frederico Madeira > > > Coordenador de Suporte > > > N. Landim Comircio Ltda > > > PABX: 81. 3497.3029 > > > e-mail: [EMAIL PROTECTED] > > > > > > > > > > > > ----- Original Message ----- > > > From: "MADMAN" > > > To: "Frederico Madeira" > > > Cc: ; > > > Sent: Friday, June 20, 2003 3:11 PM > > > Subject: Re: Ping Problems [7:70980] > > > > > > > > > > > > If you can ping host to host from router A's LAN to > router > > > B's LAN > > > the routers are working. > > > > > > Humor me, can you ping the remote LAN on router B from > > > router A > > > sourcing A's LAN?? If so I stand by my earlier post... > > > > > > Dave > > > > > > Frederico Madeira wrote: > > > > Dave, > > > > > > > > My problem isn4t in host. The problem occour in router. > When > > > i try to ping > > > > in any host to another lan. > > > > > > > > Frederico Madeira > > > > Coordenador de Suporte > > > > N. Landim Comircio Ltda > > > > PABX: 81. 3497.3029 > > > > e-mail: [EMAIL PROTECTED] > > > > ----- Original Message ----- > > > > From: "MADMAN" > > > > To: "Frederico Madeira" > > > > Cc: > > > > Sent: Friday, June 20, 2003 2:31 PM > > > > Subject: Re: Ping Problems [7:70980] > > > > > > > > > > > > > > > >> > > > >>Frederico Madeira wrote: > > > >> > > > >>>Hellow, > > > >>> > > > >>>i have a problem in conectivity of my two fr networks. > > > >>> > > > >>>If i ping from any host on LAN1 to any host on LAN2 he > works > > > fine, but > > > >> > > > > if i > > > > > > > >>>ping from router1 to any host on LAN2, dont4t work. > > > >>>I understand becouse in two cases the packet trought for > > > same router in > > > >>>NETWORK1. But via LAN he works, via console not. > > > >>> > > > >>>any advice ??? > > > >>> > > > >>>Frederico Madeira > > > >>>Coordenador de Suporte > > > >>>N. Landim Comircio Ltda > > > >>>PABX: 81. 3497.3029 > > > >>>e-mail: [EMAIL PROTECTED] > > > >> > > > >> And if you ping from the router sourcing the LAN it > > > probably works > > > >>also. If so the hosts on the LAN don't have a route to > your > > > WAN. Make > > > >>the default gateway on your hosts the repective router > > > ethernet > > > >>interface and you should be set. > > > >> > > > >> Dave > > > >> > > > >> > > > >> > > > >>-- > > > >>David Madland > > > >>CCIE# 2016 > > > >>Sr. Network Engineer > > > >>Qwest Communications > > > >>612-664-3367 > > > >> > > > >>"Government can do something for the people only in > > > proportion as it > > > >>can do something to the people." -- Thomas Jefferson > > > >> > > > >> > > > >> > > > > > > > > > > > > > > > > > > > > > > > > > > > > > -- > > > David Madland > > > CCIE# 2016 > > > Sr. Network Engineer > > > Qwest Communications > > > 612-664-3367 > > > > > > "Government can do something for the people only in > proportion > > > as it > > > can do something to the people." -- Thomas Jefferson > > Message Posted at: http://www.groupstudy.com/form/read.php?f=7&i=71166&t=70980 -------------------------------------------------- FAQ, list archives, and subscription info: http://www.groupstudy.com/list/cisco.html Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
