Technical data

Troubleshooting Techniques and Tools
1.2 Isolating Problems
Table 1–3 (Cont.) tcpdump Keywords
Keyword Definition
proto Restricts the match to a particular protocol. The following
protocols are allowed:
•
ether
• ip
• ipv6
• icmpv6
• arp
• tcp
• udp
For example:
ether src foo
arp net 128.3
tcp port 21
If no proto keyword is specified, all protocols consistent with the
type are assumed. For example,
src foo means:
(ip or arp or rarp) src foo
(Note that the latter is not valid syntax.)
net bar means:
(ip or arp) net bar
port 53 means:
(tcp or udp) port 53
1.2.5.2.2 Keywords for Filtering Traces from non-OpenVMS Systems To filter
a trace taken on another platform, the following keywords are available:
• ether
• fddi
• ip
• ipv6
• icmpv6
• arp
• rarp
• decnet
• lat
• moprc
• mopdl
• tcp
• udp
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