SUMMARY: Solaris problems

Hello

With SUN support help this problem was solved with Solaris patch
114600-04 that fixed following bug :

Bug ID: 4730657
Synopsis: Maximum MTU of VLAN interface is limited to 1496 bytes.
Category: ethernet_vlan
Subcategory: software
State: 11-Closed
Description:
The vlan kernel module reduces the value of dl_max_sdu by the size of a
VLAN tag.
The result of this is that a vlan interface will have an maximum MTU of
1496 bytes.
The maximum MTU value should be 1500 bytes.
Work Around:
None.
Fixed by patch:
Integrated in Build: 1.0prefcs
Duplicate of:
Related Change Request(s):
4823410
Date Modified: 03/27/2004 02:45:00 GMT+00:00
Public Summary:
The vlan kernel module reduces the value of dl_max_sdu by the size of a
VLAN tag.
The result of this is that a vlan interface will have an maximum MTU of
1496 bytes.
The maximum MTU value should be 1500 bytes.
e.g.
anon(5.9)$ ifconfig -a
lo0: flags=1000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4> mtu 8232 index 1
        inet 127.0.0.1 netmask ff000000
ce101000: flags=1000842<BROADCAST,RUNNING,MULTICAST,IPv4> mtu 1496 index
3
        inet 0.0.0.0 netmask 0
anon(5.9)$


With best regards
Martynas Buozis


-----Original Message-----
From: sunmanagers-bounces@sunmanagers.org
[mailto:sunmanagers-bounces@sunmanagers.org] On Behalf Of Buozis,
Martynas
Sent: Friday, December 31, 2004 4:45 AM
To: sunmanagers@sunmanagers.org
Subject: FW: Solaris problems

Hello

Please help me. I have serious problems and not sure were is actual
problem. I have NAT'ed connection that is handled by SUN GigaSwift card
with tagged VLAN  - NIC ce700000. When I open connection to host
everything works well for a while and after some packets ICMP errors
starts to come out :

nickel.internal.ffab.tide.ti.com -> ins6         XWIN C port=43680
        ins6 -> nickel.internal.ffab.tide.ti.com ICMP Destination
unreachable (Needed to fragment: next hop MTU = 1496)
nickel.internal.ffab.tide.ti.com -> ins6         XWIN C port=43680
        ins6 -> nickel.internal.ffab.tide.ti.com ICMP Destination
unreachable (Needed to fragment: next hop MTU = 1496)
nickel.internal.ffab.tide.ti.com -> ins6         XWIN C port=43680
        ins6 -> nickel.internal.ffab.tide.ti.com ICMP Destination
unreachable (Needed to fragment: next hop MTU = 1496)

1496 MTU is for ce70000 card. Is this problem IPFilter related or it is
Solaris problem ?

Please help me and respond ASAP. Thank you for your help.

With best regards
Martynas
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