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I am trying trying to track down a problem with
jumbo frames/NFS/rpc.lockd but in stating the tracking I noticed "bad tcp
checksum" showing in the tcpdump "-s0 -e -vvv -i em0"(see below), the checksum
does not seem to be effecting anything
but it is standing out like a read flag. is
it a problem?????? BTW I working on a good tcpdump for the problem with
NFS/rpc.lockd
MJM
18:19:27.252631 0:3:ba:6:55:50 0:3:47:71:e9:11 ip
1514: maya-nfs.1270376597 > nf
s1-nfs.nfs: 1448 proc-1514986542 (DF) (ttl 64, id 53573, len 1500) 18:19:27.252677 0:3:47:71:e9:11 0:3:ba:6:55:50 ip 66: nfs1-nfs.nfsd > maya-nfs.1 019: . [bad tcp cksum 3682!] 125009:125009(0) ack 22888833 win 1036 <nop,nop,tim estamp 1417206 671470> (DF) (ttl 64, id 33620, len 52) 18:19:27.252694 0:3:47:71:e9:11 0:3:ba:6:55:50 ip 66: nfs1-nfs.nfsd > maya-nfs.1 019: . [bad tcp cksum e676!] 125009:125009(0) ack 22891729 win 1036 <nop,nop,tim estamp 1417206 671470> (DF) (ttl 64, id 33621, len 52) 18:19:27.252704 0:3:47:71:e9:11 0:3:ba:6:55:50 ip 66: nfs1-nfs.nfsd > maya-nfs.1 019: . [bad tcp cksum 3e71!] 125009:125009(0) ack 22893177 win 1036 <nop,nop,tim estamp 1417206 671470> (DF) (ttl 64, id 33622, len 52) 18:19:27.252746 0:3:ba:6:55:50 0:3:47:71:e9:11 ip 1514: maya-nfs.635606901 > nfs 1-nfs.nfs: 1448 proc-4267978179 (DF) (ttl 64, id 53574, len 1500) 18:19:27.252755 0:3:ba:6:55:50 0:3:47:71:e9:11 ip 1514: maya-nfs.780347664 > nfs 1-nfs.nfs: 1448 proc-1427070815 (DF) (ttl 64, id 53575, len 1500) 18:19:27.252768 0:3:ba:6:55:50 0:3:47:71:e9:11 ip 1514: maya-nfs.4175493587 > nf s1-nfs.nfs: 1448 proc-2454832600 (DF) (ttl 64, id 53576, len 1500) 18:19:27.252797 0:3:47:71:e9:11 0:3:ba:6:55:50 ip 66: nfs1-nfs.nfsd > maya-nfs.1 019: . [bad tcp cksum ee65!] 125009:125009(0) ack 22896073 win 1036 <nop,nop,tim estamp 1417206 671470> (DF) (ttl 64, id 33623, len 52) 18:19:27.252806 0:3:47:71:e9:11 0:3:ba:6:55:50 ip 66: nfs1-nfs.nfsd > maya-nfs.1 019: . [bad tcp cksum 4660!] 125009:125009(0) ack 22897521 win 1036 <nop,nop,tim estamp 1417206 671470> (DF) (ttl 64, id 33624, len 52) |
