Hi,
'man rge' states, among the rest,
.....
The values returned by the driver in the DL_INFO_ACK primitive in
response to the DL_INFO_REQ are as follows:
o Maximum SDU (with jumbo frame) is 7000.
o Minimum SDU is 0.
.....
The hardware apparently supports it; I am using Jumbo frames on three NetBSD
machines with the same network adapter; it only warns that the max is 7500, not
9000 as expected:
$ ifconfig re0
re0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 7500
capabilities=3f80<TSO4,IP4CSUM_Rx,IP4CSUM_Tx,TCP4CSUM_Rx,TCP4CSUM_Tx,UDP4CSUM_Rx,UDP4CSUM_Tx>
enabled=0
address: 00:14:c1:4c:3a:f4
media: Ethernet autoselect (1000baseT full-duplex)
status: active
inet 10.1.32.9 netmask 0xff000000 broadcast 10.255.255.255
inet6 fe80::214:c1ff:fe4c:3af4%re0 prefixlen 64 scopeid 0x1
On OpenSolaris I get:
# dladm show-linkprop -p mtu rge0
LINK PROPERTY PERM VALUE DEFAULT POSSIBLE
rge0 mtu r- 1500 1500 1500
Is there any particular reason Jumbo frames are not supported on this adapter?
Chavdar Ivanov
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