link between pc318 and pc258 is not pingable

[Cheng Cui]

Hello,

The ping failed between the two nodes (pc318 and pc258) from my experiment 1PathRoutingPC3000, although their IP addresses seems to be valid. Please advise.

@s1:~ % ifconfig em4
em4: flags=1008843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,LOWER_UP> metric 0 mtu 1500
options=4e504bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,LRO,VLAN_HWFILTER,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6,HWSTATS,MEXTPG>
ether 00:04:23:b7:12:88
inet 10.1.2.2 netmask 0xffffff00 broadcast 10.1.2.255
media: Ethernet 1000baseT <full-duplex>
status: active
nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>

@rt:~ % ifconfig em4
em4: flags=1008843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST,LOWER_UP> metric 0 mtu 1500
options=4e504bb<RXCSUM,TXCSUM,VLAN_MTU,VLAN_HWTAGGING,JUMBO_MTU,VLAN_HWCSUM,LRO,VLAN_HWFILTER,VLAN_HWTSO,RXCSUM_IPV6,TXCSUM_IPV6,HWSTATS,MEXTPG>
ether 00:04:23:b7:1a:b2
inet 10.1.2.3 netmask 0xffffff00 broadcast 10.1.2.255
media: Ethernet 1000baseT <full-duplex>
status: active
nd6 options=29<PERFORMNUD,IFDISABLED,AUTO_LINKLOCAL>

@s1:~ % ping 10.1.2.3
PING 10.1.2.3 (10.1.2.3): 56 data bytes
ping: sendto: Host is down
ping: sendto: Host is down
ping: sendto: Host is down
^C
--- 10.1.2.3 ping statistics ---
8 packets transmitted, 0 packets received, 100.0% packet loss

@rt:~ % ping 10.1.2.2
PING 10.1.2.2 (10.1.2.2): 56 data bytes
ping: sendto: Host is down
ping: sendto: Host is down
ping: sendto: Host is down
^C
--- 10.1.2.2 ping statistics ---
8 packets transmitted, 0 packets received, 100.0% packet loss

[Leigh Stoller]

> The ping failed between the two nodes (pc318 and pc258) from my experiment 1PathRoutingPC3000, although their IP addresses seems to be valid. Please advise.

Hi. The pc3000 machines are *very* old, so the best thing to do is terminate
your experiment and restart. I have scheduled these two nodes to go out of
service.

[Cheng Cui]

Right, after re-new my experiment with different nodes. The problem is solved.

Hope I won't hit these bad nodes again. thanks