Split MultiLink Trunking - PowerPoint PPT Presentation

1 / 11
About This Presentation
Title:

Split MultiLink Trunking

Description:

All ports belong to vlan1, no other vlan need to be configured. Create MLT Trunk 1 ... 1 4096 8600A-8600B trunk ist ist 1/1,2/1 10 20. 2 4097 8600A-8100 access ... – PowerPoint PPT presentation

Number of Views:191
Avg rating:3.0/5.0
Slides: 12
Provided by: didierd
Category:

less

Transcript and Presenter's Notes

Title: Split MultiLink Trunking


1
Split Multi-Link Trunking
  • Didier DUCARRE
  • Switching specialist

2
Test Network
.10
Port A
Port B
Windows NT 4.0 SP 6 Intel EtherExpress Pro/100
Dual port Adapter
server
4/3
8/3
IST
1/1
1/1
8600A
8600B
2/1
2/1
2/2
1/3
.1
.2
.20
10.10.20.X/24 Vlan 20
2/2
2/1
IST Link 10.10.10.X/24 Vlan 10
8100
1/20
pc
.50
3
Passport 8100 Configuration
  • Reset switch to factory defaults
  • All ports belong to vlan1, no other vlan need
    to be configured
  • Create MLT Trunk 1
  • add port 2/1 and 2/2 to trunk members
  • add mlt1 to vlan1
  • Remove ports from spanning tree
  • stp disable for ports 2/1 and 2/2
  • Assign an ip address, subnet mask and default
    gateway to your management port (not mandatory)
  • connect a cable between management port to any
    port belonging to vlan1
  • ip10.10.20.20 / sm 255.255.255.0
  • define default route for routed traffic
    (gw10.10.20.1)

4
Passport 8600 Configuration
  • Use latest 3.20 build and reset config to
    factorydefaults.
  • Create vlan 10
  • ip 10.10.10.1 / sm 255.255.255.0
  • add mlt 1
  • Create vlan 20
  • ip 10.10.20.1 / sm 255.255.255.0
  • add mlt 2 mlt 3
  • Create mlt 1 (IST)
  • enable tagging, add ports (1/1,2/1), add vlans
    (10,20) then under ist specify peer ip address
    (10.10.10.2) vlan id (10)
  • Create mlt 2 mlt 3(SMLT)
  • under smlt, give smlt-id (2 3), add port (2/2
    (smlt-id 2) and 8/3 (smlt-id 3))

5
Server Configuration 1/2
  • Select Automatic Fault Tolerance Mode
  • AFT Only

6
Server Configuration 2/2
  • IP address will be common on port A B

7
IST/SMLT link states
Once all switches are up and you have
connectivity you get messages on console (as well
in log, show log file to display) 04/25/01
142006 smltIstSessionUp 04/25/01 152006
SMLT 2 UP 04/25/01 152006 SMLT 3 UP show mlt
info command give IST/SMLT status
PORT MLT MLT PORT
VLAN MLTID IFINDEX NAME TYPE ADMIN
CURRENT MEMBERS IDS ----------------------
--------------------------------------------------
----- 1 4096 8600A-8600B trunk ist
ist 1/1,2/1 10 20 2 4097
8600A-8100 access smlt smlt 2/2
20 3 4098 8600A-server access smlt
smlt 8/3 20 IST status is
always ist even if ports 1/1 and 2/1 are
down SMLT status can be smlt (port 2/2 or 8/3 up)
or norm (port 2/2 or 8/3 down)
8
Removing IST/SMLT links
If you disconnect IST link (ports 1/1 and 2/1)
you have 04/26/01 152149 Link
Down(1/1) 04/26/01 152156 smltIstSessionDown
04/26/01 152156 Link Down(2/1) If you
disconnect an smlt port you have 04/25/01
152621 SMLT 2 DOWN 04/25/01 152621 Link
Down(2/2) If you reconnect it you have
04/25/01 152710 SMLT 2 UP 04/25/01
152710 Link Up(2/2) More detail with trace
level 25 2, but it is really verbose
9
What is the path ?
  • Check forwarding databases on 8600A and 8600B for
    vlan 20
  • 8600A5 show vlan info fdb-entry 20
  • You will get pc, server and 8100 mac addresses (2
    for 8100, one related to management interface and
    second for discovery protocol SONMP)
  • VLAN MAC
    QOS SMLT
  • ID STATUS ADDRESS INTERFACE
    MONITOR LEVEL REMOTE
  • --------------------------------------------------
    -------------------------
  • 20 learned 0010a4e06f43 8600A-8100
    false 1 true
  • 20 self 00802d359a01 -
    false 0 false
  • 20 learned 00802dac6201 8600A-8600B
    false 1 true
  • 20 learned 00d0b781c464 8600A-server
    false 1 true
  • 20 learned 00e07bb10880 8600A-8100
    false 1 false
  • 20 learned 00e07bb10881 8600A-8100
    false 1 true
  • True coming from IST link / False coming
    from SMLT link

10
Response time 1/2
Start a continuous ping from pc to server (ping
t 10.10.20.10) Disconnect link between
8100-8600 (Use previous slide to find active path
otherwise ping will not loose any echo) Reply
from 10.10.20.10 bytes32 timelt10ms
TTL128 Request timed out. 1 or 2 echo
losts Reply from 10.10.20.10 bytes32 timelt10ms
TTL128 If you reconnect it you have Reply
from 10.10.20.10 bytes32 timelt10ms
TTL128 Request timed out. Request timed
out. 4 to 6 echo losts Request timed
out. Request timed out. Reply from 10.10.20.10
bytes32 timelt10ms TTL128
11
Response time 2/2
Now power down active 8600 (the one on which
frame goes) Reply from 10.10.20.10 bytes32
timelt10ms TTL128 Request timed out. 1 or 2
echo losts Reply from 10.10.20.10 bytes32
timelt10ms TTL128 If you switch it on. Reply
from 10.10.20.10 bytes32 timelt10ms
TTL128 Request timed out. Request timed
out. 4 to 6 echo losts Request timed
out. Request timed out. Reply from 10.10.20.10
bytes32 timelt10ms TTL128
Write a Comment
User Comments (0)
About PowerShow.com