Jumbo frames in a 3750G stack

DeathmageDeathmage Banned Posts: 2,496
Hey guys,

So this evening I'm rolling over my iSCSI and vMotion vlan's from my HP 2848 legacy switch to one of the 3750G's in the stack. I basically want to move my entire VMware lab to this stack.

I was curious if there is any special method of doing Jumbo Frames on the 3750G that I should be aware of?

I want to make use of CDP in my VMware 5.5 cluster and since I'm weeks away from the CCENT exam I want to get some near-to-real world Cisco netoworking live-lab work with a VMware cluster on Cisco switching. Working with the Dell N2048's at work allot recently the CLi is very similar to Cisco so I'm quite solid on the commands, just not sure about Jumbo Frames in a legacy Cisco world.

See I know the command is "system mtu jumbo 9000" in the Dell N2000 switches, and do beleive it's the same on the 3750G's but doesn't that assign Jumbo @ 9000 MTU to all ports? - is it possible to set it to just a set of ports. IE just a iSCSI vlan, so the management vlan that is just a normal 1500 MTU can connect. I would just presume it would cause issues.



Right now this is now the HP is setup:

ProCurve J4904A Switch 2848
Software revision I.10.73

Copyright (C) 1991-2009 Hewlett-Packard Co. All Rights Reserved.

RESTRICTED RIGHTS LEGEND

Use, duplication, or disclosure by the Government is subject to restrictions
as set forth in subdivision (b) (3) (ii) of the Rights in Technical Data and
Computer Software clause at 52.227-7013.

HEWLETT-PACKARD COMPANY, 3000 Hanover St., Palo Alto, CA 94303

We'd like to keep you up to date about:
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Please register your products now at: www.ProCurve.com


Press any key to continue


Username:


vMotion-iSCSI Switch>
vMotion-iSCSI Switch> enable
Username: trevor
Password:
vMotion-iSCSI Switch#
vMotion-iSCSI Switch#
vMotion-iSCSI Switch#
vMotion-iSCSI Switch# show config

Startup configuration:

; J4904A Configuration Editor; Created on release #I.10.73

hostname " vMotion-iSCSI Switch"
snmp-server contact "Trevor-Smith"
ip routing
snmp-server community "public" Unrestricted
vlan 1
name "DATA-LAN - local Port 36 is UPLINK to HP 2910al 48 PoE+ on remote Port 36"
untagged 1-9,36,48
ip address 192.168.115.8 255.255.255.192
no untagged 10-35,37-47
exit
vlan 10
name "vMotion"
untagged 10-15
ip address 172.16.25.3 255.255.255.224
exit
vlan 20
name "iSCSI"
untagged 16-21
ip address 172.16.27.3 255.255.255.224
jumbo
exit
vlan 800
name "unused ports"
untagged 22-35,37-47
no ip address
exit
ip route 0.0.0.0 0.0.0.0 192.168.115.1
management-vlan 1
password manager

vMotion-iSCSI Switch#
vMotion-iSCSI Switch#


This is how the 3750G stack is setup:

Cisco-3750G-Top#show ver
Cisco IOS Software, C3750 Software (C3750-IPSERVICESK9-M), Version 12.2(53)SE1, RELEASE SOFTWARE (fc2)
Technical Support: Support and Documentation - Cisco Systems
Copyright (c) 1986-2010 by Cisco Systems, Inc.
Compiled Fri 12-Mar-10 15:50 by prod_rel_team
Image text-base: 0x01000000, data-base: 0x02F00000

ROM: Bootstrap program is C3750 boot loader
BOOTLDR: C3750 Boot Loader (C3750-HBOOT-M) Version 12.2(44)SE5, RELEASE SOFTWARE (fc1)

Cisco-3750G-Top uptime is 47 minutes
System returned to ROM by power-on
System image file is "flash:/c3750-ipservicesk9.bin"


This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:
Export Compliance Product Report Application

If you require further assistance please contact us by sending email to
export@cisco.com.

cisco WS-C3750G-24T (PowerPC405) processor (revision N0) with 131072K bytes of memory.
Processor board ID FDO1213Y2FX
Last reset from power-on
5 Virtual Ethernet interfaces
52 Gigabit Ethernet interfaces
The password-recovery mechanism is enabled.

512K bytes of flash-simulated non-volatile configuration memory.
Base ethernet MAC Address : 00:1F:CA:D0:66:80
Motherboard assembly number : 73-9679-11
Power supply part number : 341-0048-03
Motherboard serial number : FDO121308JA
Power supply serial number : DTN120530SV
Model revision number : N0
Motherboard revision number : A0
Model number : WS-C3750G-24T-S
System serial number : FDO1213Y2FX
Top Assembly Part Number : 800-25855-02
Top Assembly Revision Number : A0
Version ID : V06
CLEI Code Number : COMUV10ARA
Hardware Board Revision Number : 0x02


Switch Ports Model SW Version SW Image




1 28 WS-C3750G-24TS 12.2(53)SE1 C3750-IPSERVICESK9-M
* 2 24 WS-C3750G-24T 12.2(53)SE1 C3750-IPSERVICESK9-M


Switch 01
Switch Uptime : 47 minutes
Base ethernet MAC Address : 00:13:C4:44:80:80
Motherboard assembly number : 73-7058-12
Power supply part number : 341-0045-01
Motherboard serial number : CAT091605VP
Power supply serial number : LIT091003WE
Model revision number : H0
Motherboard revision number : A0
Model number : WS-C3750G-24TS-S
System serial number : CAT0916Y04G

Configuration register is 0xF

Cisco-3750G-Top#
Cisco-3750G-Top#config t
Enter configuration commands, one per line. End with CNTL/Z.
Cisco-3750G-Top(config)#inter vlan 10
Cisco-3750G-Top(config-if)#des
Cisco-3750G-Top(config-if)#description
00:32:41: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan10, changed state to down
Cisco-3750G-Top(config-if)#description vMotion
Cisco-3750G-Top(config-if)#ip add 172.16.25.3 255.255.255.224
Cisco-3750G-Top(config-if)#no shut
Cisco-3750G-Top(config-if)#exit
Cisco-3750G-Top(config)#
Cisco-3750G-Top(config)#inter vlan 20
Cisco-3750G-Top(config-if)#description vMotion
00:33:17: %LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan20, changed state to down
Cisco-3750G-Top(config-if)#description iSCSI
Cisco-3750G-Top(config-if)#ip add 172.16.27.3 255.255.255.224
Cisco-3750G-Top(config-if)#no shut
Cisco-3750G-Top(config-if)#
Cisco-3750G-Top(config-if)#
Cisco-3750G-Top(config-if)#
Cisco-3750G-Top(config-if)#config t
^
% Invalid input detected at '^' marker.

Cisco-3750G-Top(config-if)#inter range giga2/0/5 - 10
Cisco-3750G-Top(config-if-range)#switchport
Cisco-3750G-Top(config-if-range)#switchport mode access
Cisco-3750G-Top(config-if-range)#switchport access vlan 10
% Access VLAN does not exist. Creating vlan 10
Cisco-3750G-Top(config-if-range)#exit
Cisco-3750G-Top(config)#
Cisco-3750G-Top(config)#
Cisco-3750G-Top(config)#inter range giga2/0/20 - 30
^
% Invalid input detected at '^' marker.

Cisco-3750G-Top(config)#inter range giga2/0/15 - 22
Cisco-3750G-Top(config-if-range)#switchport
Cisco-3750G-Top(config-if-range)#switchport mode access
Cisco-3750G-Top(config-if-range)#switchport access vlan 20
% Access VLAN does not exist. Creating vlan 20
Cisco-3750G-Top(config-if-range)#
Cisco-3750G-Top(config-if-range)#
Cisco-3750G-Top(config-if-range)#exit
Cisco-3750G-Top(config)#exit
Cisco-3750G-Top#wr
00:36:23: %SYS-5-CONFIG_I: Configured from console by console mem
Cisco-3750G-Top#wr mem
Building configuration...
[OK]
Cisco-3750G-Top#
Cisco-3750G-Top#
Cisco-3750G-Top#
Cisco-3750G-Top#show ip inter br
Interface IP-Address OK? Method Status Protocol
Vlan1 unassigned YES NVRAM up up
Vlan10 172.16.25.3 YES manual up down
Vlan20 172.16.27.3 YES manual up down
Vlan100 192.168.100.30 YES NVRAM down down
Vlan500 1.1.1.1 YES NVRAM up down

Cisco-3750G-Top#
Cisco-3750G-Top#show history
enable
show config
config t
wr mem
show switch sum
show switch detail
show ip inter br
config t
wr mem
show ip inter br
show interfaces description
show history
Cisco-3750G-Top#term
Cisco-3750G-Top#terminal hist
Cisco-3750G-Top#terminal history ?
size Set history buffer size
<cr>

Cisco-3750G-Top#terminal history size 50
Cisco-3750G-Top#wr mem
Building configuration...
[OK]
Cisco-3750G-Top#
Cisco-3750G-Top#
Cisco-3750G-Top#
Cisco-3750G-Top#show history
enable
show config
config t
wr mem
show switch sum
show switch detail
show ip inter br
config t
wr mem
show ip inter br
show interfaces description
show history
terminal history size 50
wr mem
show history
Cisco-3750G-Top#show vlan

VLAN Name Status Ports
----


1 default active Gi1/0/1, Gi1/0/2, Gi1/0/3
Gi1/0/4, Gi1/0/5, Gi1/0/6
Gi1/0/7, Gi1/0/8, Gi1/0/9
Gi1/0/10, Gi1/0/11, Gi1/0/12
Gi1/0/13, Gi1/0/14, Gi1/0/15
Gi1/0/16, Gi1/0/17, Gi1/0/18
Gi1/0/19, Gi1/0/20, Gi1/0/21
Gi1/0/22, Gi1/0/23, Gi1/0/24
Gi1/0/25, Gi1/0/26, Gi1/0/27
Gi1/0/28, Gi2/0/2, Gi2/0/3
Gi2/0/4, Gi2/0/11, Gi2/0/12
Gi2/0/13, Gi2/0/14, Gi2/0/23
Gi2/0/24
10 VLAN0010 active Gi2/0/5, Gi2/0/6, Gi2/0/7
Gi2/0/8, Gi2/0/9, Gi2/0/10
20 VLAN0020 active Gi2/0/15, Gi2/0/16, Gi2/0/17
Gi2/0/18, Gi2/0/19, Gi2/0/20
Gi2/0/21, Gi2/0/22
500 VLAN0500 active Gi2/0/1
1002 fddi-default act/unsup
1003 token-ring-default act/unsup
1004 fddinet-default act/unsup
1005 trnet-default act/unsup

VLAN Type SAID MTU Parent RingNo BridgeNo Stp BrdgMode Trans1 Trans2
----





----


1 enet 100001 1500 - - - - - 0 0
10 enet 100010 1500 - - - - - 0 0
20 enet 100020 1500 - - - - - 0 0
500 enet 100500 1500 - - - - - 0 0
1002 fddi 101002 1500 - - - - - 0 0
1003 tr 101003 1500 - - - - - 0 0
1004 fdnet 101004 1500 - - - ieee - 0 0
1005 trnet 101005 1500 - - - ibm - 0 0

Remote SPAN VLANs


Primary Secondary Type Ports




Cisco-3750G-Top#show ip inter br
Interface IP-Address OK? Method Status Protocol
Vlan1 unassigned YES NVRAM up up
Vlan10 172.16.25.3 YES manual up down
Vlan20 172.16.27.3 YES manual up down
Vlan100 192.168.100.30 YES NVRAM down down
Vlan500 1.1.1.1 YES NVRAM up down
GigabitEthernet1/0/1 unassigned YES unset down down
GigabitEthernet1/0/2 unassigned YES unset down down
GigabitEthernet1/0/3 unassigned YES unset down down
GigabitEthernet1/0/4 unassigned YES unset down down
GigabitEthernet1/0/5 unassigned YES unset down down
GigabitEthernet1/0/6 unassigned YES unset down down
GigabitEthernet1/0/7 unassigned YES unset down down
GigabitEthernet1/0/8 unassigned YES unset down down
GigabitEthernet1/0/9 unassigned YES unset down down
GigabitEthernet1/0/10 unassigned YES unset down down
GigabitEthernet1/0/11 unassigned YES unset down down
GigabitEthernet1/0/12 unassigned YES unset down down
GigabitEthernet1/0/13 unassigned YES unset down down
GigabitEthernet1/0/14 unassigned YES unset down down
GigabitEthernet1/0/15 unassigned YES unset down down
GigabitEthernet1/0/16 unassigned YES unset down down
GigabitEthernet1/0/17 unassigned YES unset down down
GigabitEthernet1/0/18 unassigned YES unset down down
GigabitEthernet1/0/19 unassigned YES unset down down
GigabitEthernet1/0/20 unassigned YES unset down down
GigabitEthernet1/0/21 unassigned YES unset down down
GigabitEthernet1/0/22 unassigned YES unset down down
GigabitEthernet1/0/23 unassigned YES unset down down
GigabitEthernet1/0/24 unassigned YES unset up up
GigabitEthernet1/0/25 unassigned YES unset down down
GigabitEthernet1/0/26 unassigned YES unset down down
GigabitEthernet1/0/27 unassigned YES unset down down
GigabitEthernet1/0/28 unassigned YES unset down down
GigabitEthernet2/0/1 unassigned YES unset down down
GigabitEthernet2/0/2 unassigned YES unset down down
GigabitEthernet2/0/3 unassigned YES unset down down
GigabitEthernet2/0/4 unassigned YES unset down down
GigabitEthernet2/0/5 unassigned YES unset down down
GigabitEthernet2/0/6 unassigned YES unset down down
GigabitEthernet2/0/7 unassigned YES unset down down

Cisco-3750G-Top#
Cisco-3750G-Top#show config

service timestamps debug uptime
service timestamps log uptime
service password-encryption
!
hostname Cisco-3750G-Top
!
boot-start-marker
boot-end-marker
!
enable secret 5 $1$43Kp$3d4hRbC3FyV.mjjsB3SUh/
!
!
!
no aaa new-model
switch 1 provision ws-c3750g-24ts
switch 2 provision ws-c3750g-24t
system mtu routing 1500
authentication mac-move permit
ip subnet-zero
!
!
!
!
crypto pki trustpoint TP-self-signed-3402655360
enrollment selfsigned
subject-name cn=IOS-Self-Signed-Certificate-3402655360
revocation-check none
rsakeypair TP-self-signed-3402655360
!
!
crypto pki certificate chain TP-self-signed-3402655360
certificate self-signed 01 nvram:IOS-Self-Sig#3030.cer
!
!
!
spanning-tree mode pvst
spanning-tree etherchannel guard misconfig
spanning-tree extend system-id
!
vlan internal allocation policy ascending
!
!
!
!
interface GigabitEthernet1/0/1
!
interface GigabitEthernet1/0/2
!
interface GigabitEthernet1/0/3
!
interface GigabitEthernet1/0/4
!
interface GigabitEthernet1/0/5
!
interface GigabitEthernet1/0/6
!
interface GigabitEthernet1/0/7
!
interface GigabitEthernet1/0/8
!
interface GigabitEthernet1/0/9
!
interface GigabitEthernet1/0/10
!
interface GigabitEthernet1/0/11
!
interface GigabitEthernet1/0/12
!
interface GigabitEthernet1/0/13
!
interface GigabitEthernet1/0/14
!
interface GigabitEthernet1/0/15
!
interface GigabitEthernet1/0/16
!
interface GigabitEthernet1/0/17
!
interface GigabitEthernet1/0/18
!
interface GigabitEthernet1/0/19
!
interface GigabitEthernet1/0/20
!
interface GigabitEthernet1/0/21
!
interface GigabitEthernet1/0/22
!
interface GigabitEthernet1/0/23
!
interface GigabitEthernet1/0/24
!
interface GigabitEthernet1/0/25
!
interface GigabitEthernet1/0/26
!
interface GigabitEthernet1/0/27
!
interface GigabitEthernet1/0/28
!
interface GigabitEthernet2/0/1
description test setup for Todd's Book
switchport access vlan 500
switchport mode access
!
interface GigabitEthernet2/0/2
!
interface GigabitEthernet2/0/3
!
interface GigabitEthernet2/0/4
!
interface GigabitEthernet2/0/5
switchport access vlan 10
switchport mode access
!
interface GigabitEthernet2/0/6
switchport access vlan 10
switchport mode access
!
interface GigabitEthernet2/0/7
switchport access vlan 10
switchport mode access
!
interface GigabitEthernet2/0/8
switchport access vlan 10
switchport mode access
!
interface GigabitEthernet2/0/9
switchport access vlan 10
switchport mode access
!
interface GigabitEthernet2/0/10
switchport access vlan 10
switchport mode access
!
interface GigabitEthernet2/0/11
!
interface GigabitEthernet2/0/12
!
interface GigabitEthernet2/0/13
!
interface GigabitEthernet2/0/14
!
interface GigabitEthernet2/0/15
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet2/0/16
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet2/0/17
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet2/0/18
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet2/0/19
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet2/0/20
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet2/0/21
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet2/0/22
switchport access vlan 20
switchport mode access
!
interface GigabitEthernet2/0/23
!
interface GigabitEthernet2/0/24
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1
switchport mode trunk
!
interface Vlan1
description "Home-Network /26"
ip address 192.168.115.31 255.255.255.192
!
interface Vlan10
description vMotion
ip address 172.16.25.3 255.255.255.224
!
interface Vlan20
description iSCSI
ip address 172.16.27.3 255.255.255.224
!
interface Vlan100
description "TFTP vlan for firmware upgrade"
ip address 192.168.100.30 255.255.255.0
!
interface Vlan500
ip address 1.1.1.1 255.255.255.0
!
ip classless
ip http server
ip http secure-server
!
!
ip sla enable reaction-alerts
!
!
banner motd ^C Hello this in the 3750G Master switch in a 3750G Super Stack for the Trevor Smith's VMware/Cisco Lab ^C
!
line con 0
password *************
logging synchronous
login
line vty 0 4
password ************
login
line vty 5 15
password ************
login
!
end
Cisco-3750G-Top(config)#inter range giga1/0/3 - 12
Cisco-3750G-Top(config-if-range)#switchport
Cisco-3750G-Top(config-if-range)#switchport mode access
Cisco-3750G-Top(config-if-range)#switchport access vlan 1
Cisco-3750G-Top(config-if-range)#de
Cisco-3750G-Top(config-if-range)#des
Cisco-3750G-Top(config-if-range)#description "VMware Lab Live Network"
Cisco-3750G-Top(config-if-range)#
Cisco-3750G-Top(config-if-range)#
Cisco-3750G-Top(config-if-range)#
Cisco-3750G-Top(config-if-range)#exit
Cisco-3750G-Top(config)#inter range giga2/0/5 - 10
Cisco-3750G-Top(config-if-range)#description "VMware Lab vMotion"
Cisco-3750G-Top(config-if-range)#exit
Cisco-3750G-Top(config)#inter range giga2/0/15 - 22
Cisco-3750G-Top(config-if-range)#description "VMware Lab iSCSI"
Cisco-3750G-Top(config-if-range)#exit
Cisco-3750G-Top(config)#exit
Cisco-3750G-Top#wr me
00:08:34: %SYS-5-CONFIG_I: Configured from console by consolem
Building configuration...
[OK]
Cisco-3750G-Top#
Cisco-3750G-Top#
Cisco-3750G-Top#
Cisco-3750G-Top#
Cisco-3750G-Top#show inter description
Interface Status Protocol Description
Vl1 up up
Vl10 up down vMotion
Vl20 up down iSCSI
Vl100 down down "TFTP vlan for firmware upgrade"
Vl500 up down
Gi1/0/1 down down
Gi1/0/2 down down
Gi1/0/3 down down "VMware Lab Live Network"
Gi1/0/4 down down "VMware Lab Live Network"
Gi1/0/5 down down "VMware Lab Live Network"
Gi1/0/6 down down "VMware Lab Live Network"
Gi1/0/7 down down "VMware Lab Live Network"
Gi1/0/8 down down "VMware Lab Live Network"
Gi1/0/9 down down "VMware Lab Live Network"
Gi1/0/10 down down "VMware Lab Live Network"
Gi1/0/11 down down "VMware Lab Live Network"
Gi1/0/12 down down "VMware Lab Live Network"
Gi1/0/13 down down
Gi1/0/14 down down
Gi1/0/15 down down
Gi1/0/16 down down
Gi1/0/17 down down
Gi1/0/18 down down
Gi1/0/19 down down
Gi1/0/20 down down
Gi1/0/21 down down
Gi1/0/22 down down
Gi1/0/23 down down
Gi1/0/24 up up
Gi1/0/25 down down
Gi1/0/26 down down
Gi1/0/27 down down
Gi1/0/28 down down
Gi2/0/1 down down test setup for Todd's Book
Gi2/0/2 down down
Gi2/0/3 down down
Gi2/0/4 down down
Gi2/0/5 down down "VMware Lab vMotion"
Gi2/0/6 down down "VMware Lab vMotion"
Gi2/0/7 down down "VMware Lab vMotion"
Gi2/0/8 down down "VMware Lab vMotion"
Gi2/0/9 down down "VMware Lab vMotion"
Gi2/0/10 down down "VMware Lab vMotion"
Gi2/0/11 down down
Gi2/0/12 down down
Gi2/0/13 down down
Gi2/0/14 down down
Gi2/0/15 down down "VMware Lab iSCSI"
Gi2/0/16 down down "VMware Lab iSCSI"
Gi2/0/17 down down "VMware Lab iSCSI"
Gi2/0/18 down down "VMware Lab iSCSI"
Gi2/0/19 down down "VMware Lab iSCSI"
Gi2/0/20 down down "VMware Lab iSCSI"
Gi2/0/21 down down "VMware Lab iSCSI"
Gi2/0/22 down down "VMware Lab iSCSI"
Gi2/0/23 down down
Gi2/0/24 down down
Cisco-3750G-Top#
Cisco-3750G-Top#ping 192.168.115.31

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.115.31, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/1/1 ms
Cisco-3750G-Top#ping 192.168.115.15

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.115.15, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/203/1006 ms
Cisco-3750G-Top#ping 192.168.115.1

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.115.1, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/203/1006 ms
Cisco-3750G-Top#ping 192.168.115.5

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.115.5, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/205/1016 ms
Cisco-3750G-Top#ping 192.168.115.7

Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 192.168.115.7, timeout is 2 seconds:
!!!!!
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/203/1007 ms
Cisco-3750G-Top#wr mem
Building configuration...
[OK]
Cisco-3750G-Top#
Cisco-3750G-Top#

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