STP Logical Interfaces, virtual ports
As you probably know one have to take in account the max available numbers of virtual ports and logical interfaces for Spanning Tree when designing a switched network based on catalyst 6500's. Does somebody know if you also have these parameters if you're designing a network based on 4500's or 3750 stacks? And where to find it on the Cisco site
Rgrds
My issue deals with Spanning Tree Protocol or better the scalability of STP. see the following document:
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat6000/122sx/ol_4164.htm#wp26366
For choosing the right spanning tree protocol (RPVST+ or MST) you have to take logical interfaces and virtual ports into account on the 6500 platform. But what if you decide to use a different platform, for instance a 3750 stack.
Rgrds
Aad
Similar Messages
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STP Logical ports count calculations.
Good day!
As it stays in Cisco docs STP logical ports number is calculated by formula:
Sum [(Each trunk on the switch) * (Active VLANs on each trunk)] + (Number of
nontrunking interfaces on the switch)
And this number can be checked by issuing command
show spanning-tree summary total
And i didnt find out any remarks that this number calculated differently for RSTP and MST, so i assume that calculations process is the same.
I tried to check this number on my equipment and was a bit surpised with results:
R1#show spanning-tree summary totals
Switch is in mst mode (IEEE Standard)
Root bridge for: none
EtherChannel misconfig guard is enabled
Extended system ID is enabled
Portfast Default is disabled
Portfast Edge BPDU Guard Default is disabled
Portfast Edge BPDU Filter Default is disabled
Loopguard Default is disabled
Platform PVST Simulation is enabled
PVST Simulation is enabled
Bridge Assurance is enabled
UplinkFast is disabled
BackboneFast is disabled
Pathcost method used is long
Name Blocking Listening Learning Forwarding STP Active
2 msts 0 0 0 24 24
Hm.. only 24 logical ports but lets check number of trunks in system and vlans that spans over those trunks:
R1#show interfaces trunk
-----Omitted for brevity----
Port Vlans allowed and active in management domain
Po30 5,97,99,111,165,202,212-213,401-406,1521-1539,1600-1604
Po31 97,165,401,405-406,1600
Po41 1521-1539
Po52 99,111,202,212-213,401,403-404
Po70 97,165,401,405-406,1600
Po71 97,165,200,401,405-406
Po100 97,1603
Po101 97,165,401,405-406,1600
Po102 97,165,401,405-406,1600
-----Omitted for brevity----
So according to logical port definition only Po41 must have more STP logical ports than i got in ouput of show spanning-tree summary total command.
Can somebody clarify this?Good day.
Sry, but i dint understand what mean "excluding logical vlans". You mean reserved vlans:
1002 fddi-default act/unsup
1003 token-ring-default act/unsup
1004 fddinet-default act/unsup
1005 trnet-default act/unsup
If yes, than I have 40 vlans except those.
Besides i can get you formula 11 vlans + 9 PC. As i addused the formula according to Cisco docs is:
Sum [(Each trunk on the switch) * (Active VLANs on each trunk)] + (Number of
nontrunking interfaces on the switch) -
Logical interface in solaris 10
Hi there,
I need to configure logical interface in a solaris 10 3/05 server. After reading the Solaris 10 IP services manual, I am not quite sure what to do. All the examples and explanation are about using the new subcommand addif of ifconfig. It was not clear in the documentation if the setting logical interfaces via addif will persist across boot.
Can one still configure logical interface in Solaris 10 in a more traditional way like in Solaris 8? In an Solaris 8 server I will do the following.
Let's assume I want to configure in a solaris 8 server a logical interface named hme0:1 with IP address 192.168.20.28 with netmask 255.255.255.0 for hostname host001
# cat /etc/hostname.hme0:1
host001
^D
# echo "192.168.20.28 host001" >> /etc/inet/hosts
# echo "192.168.20.0 255.255.255.0" >> /etc/inet/netmasks
# reboot -- -r
Can one still do that in solaris 10 3/05 server?Hi there,
I need to configure logical interface in a solaris 10
3/05 server. After reading the Solaris 10 IP services
manual, I am not quite sure what to do. All the
examples and explanation are about using the new
subcommand addif of ifconfig. It was not clear in the
documentation if the setting logical interfaces via
addif will persist across boot.No. No 'ifconfig' command is persistent.
Can one still configure logical interface in Solaris
10 in a more traditional way like in Solaris 8? In an
Solaris 8 server I will do the following.
Let's assume I want to configure in a solaris 8
server a logical interface named hme0:1 with IP
address 192.168.20.28 with netmask 255.255.255.0 for
hostname host001
# cat /etc/hostname.hme0:1
host001
^D
# echo "192.168.20.28 host001" >> /etc/inet/hosts
# echo "192.168.20.0 255.255.255.0" >>
/etc/inet/netmasks
# reboot -- -r
Can one still do that in solaris 10 3/05 server?Absolutely.
You don't need to reboot (you can run ifconfig for this boot and let the files do the work next time) and the -r doesn't do anything with interfaces (expecially virtual interfaces) anyway.
Darren -
Zone with multiple logical interfaces
Hi,
How can multiple logical network interfaces be added to a running zone?
I have configured and installed a whole root zone with one shared-ip network interface.
Now, I need to add more logical interfaces to the same zone.
On a physical server with a bge interface, I would create a /etc/hostname file for each logical interface such as
$ ls /etc | grep host
hostname.bge0
hostname.bge0:1
hostname.bge0:2
hostname.bge0:3
hostname.bge0:4
hostname.bge1
hostname.bge1:1
hostname.bge1:2
hostname.bge1:3
hostname.bge3
hosts
$How can the above be done for a zone?Hi
This requires 2 steps. Firstly update your zone configuration to add the logical interface and its associated IP address.
Assuming from below you want the logical interface to be added to bge0 then do the following replacing the zonename and ip address for whatever is appropriate for you.
# zonecfg -z itchyzone
zonecfg:itchyzone1> add net
zonecfg:itchyzone1:net> set address=192.168.1.21
zonecfg:itchyzone1:net> set physical=bge0
zonecfg:itchyzone1:net> end
zonecfg:itchyzone1> exitYou can do the above as many times as you like to create multiple logical interfaces for the zone.
After doing the above you will need to reboot the zone to get the new logical interface.
However if you cant reboot the zone you can plumb a logical interface into the zone by running something similar to the following (change for your zonename, IP etc) from the global zone:
# ifconfig bge0 addif 192.168.1.21 netmask + broadcast + zone itchyzone1 upyou will now have an extra interface in the zone (in this case called itchyzone1). To verify, login to the zone and run ifconfig -a and you will see your new interface.
# zlogin itchyzone1
[Connected to zone 'itchyzone1' pts/4]
Last login: Mon Oct 5 22:24:15 on pts/4
Sun Microsystems Inc. SunOS 5.10 Generic January 2005
# ifconfig -a
lo0:1: flags=2001000849<UP,LOOPBACK,RUNNING,MULTICAST,IPv4,VIRTUAL> mtu 8232 index 1
inet 127.0.0.1 netmask ff000000
bge0:2: flags=201000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4,CoS> mtu 1500 index 2
inet 192.168.1.20 netmask ffffff00 broadcast 192.168.1.255
bge0:3: flags=201000843<UP,BROADCAST,RUNNING,MULTICAST,IPv4,CoS> mtu 1500 index 2
inet 192.168.1.21 netmask ffffff00 broadcast 192.168.1.255Hope this helps
Martin -
Are QOS BUM Policer BUM Parameters applicable for virtual ports or only for non virtual ports?
Are QOS BUM Policer BUM Parameters applicable for virtual ports or only for non virtual ports?
Just FYI.
I probably overestimated RHEL/OEL-5.3 capability to "compete in Music Showbiz" as a digital studio workstation OS. Seems that "very old" alsa kernel drivers (1.0.17), compiled with actual kernel, don't like Audigy cards when it comes to MIDI interface, despite the fact the audio is perfect. Although I am still not sure nothing could be done as a workaround in order to get MIDI worked on OEL-5.3, the fact is that SB Audigy MIDI works like Roland Synth, sounding amazingly, if the kernel 2.6.18-128.1.1.0.1.el5 is recompiled with the actual alsa driver version 1.0.19 (modules snd-emu10k1, snd-emu10k1-synth, etc).
It's interesting that overall device and loaded-modules schema's picture is the same as with old alsa (original kernel). That's why I still think something could be done, at least as workaround, to get MIDI worked with original OEL-5.3 kernel.
NJ -
Difference between logical and virtual terms
Hello,
This is not purely oracle question; but in documentation so many times we find 2 terms:
A. Logical
B.Virtual.
So what is the principle difference between logical and virtual? As I know physical is that which I can see and touch; while logical/virtual is that is imaginary. We say tablespace is logical not virtual; while Java Virtual Machine; not Java Logical Machine. So I want to know; what is the principle difference; why two words for an imaginary thing. Before posting question; I searched in google as “Difference between virtual and logical” but I couldn’t found the answer.
Please quote your comments.
Thanks & Kind Regards
Girish SharmaGirish,
I wont say that I am correcting you as this is like that half glass full/empty thing.May be what I see is half empty , you would see the same as half full.
Well now coming to the explanation.I am saying honestly , I got more confused after reading your definitions.What do you mean by saing that tablespace is not virtual.I see it as purely virtual.We don't say it as virtual tablespace or logical tablespace but it is actualy logical/virtual, having no existance but just the definition right?
How can you say that the size of virtual is larger than logcial?The size of tablespace is actualy the sum total of size of datafiles.So it actualy becomes very larger right?Much larger than JVM which is of few megs only.
The point 3 totally knocked me out.I have no idea what you said.
Ok I tell you this.Just remember the definition that Hans gave already.If you ask me than its the best definition that we can have. Just remember this and if some one asks you more further than give them your point 3 definition and tell them understand this ;-).Please don'tmind I am just kidding. Its just semantics.Don't get lost into it.You will find many people using both the terms interchangibly. So its ok.I shall stick with Hans's defintion,simple and concise.There are lot more other topics to dig upon in oracle.I can mail you lots of them.Spend time on those.Don't think that I am demotivating you.I understand you asked only because you have a doubt.But we got a good resolution of it and beyond that, its not of much use to dig it atleast not in the technial terms.
Cheers
Aman....
PS:Are you on oraclecommunity.net? -
Solaris 10 ip address of outgoing packets on logical interfaces
Hi there.
I have a Sun here with Solaris 10 and one physical interface e0 and one logical interface on it e0:1.
e0 has address 1.2.3.4
e0:1 has address 1.2.3.5
gateway is 1.2.3.254
To every ip address I bind a sendmail deamon.
For incoming connection the ip packtes come out with the right ip address
from the interface to which the connection was established.
But for outgoing packets it seems that only the ip address of e0 is used even if the sendmail on e0:1 makes an outgoing connection.
On Solaris 9 every app that binds to an logigical interface uses that ip for outgoing connection, but on Solaris 10 it looks, that only the ip address of the primary (physical) interface (e0) is used.
Is there a way to make outgoing connections of apps binding e0:1 to use the ip address of the e0:1 interface?
I dont use zones, both interfaces are in the global zone.I'm not that familiar with postfix, but thats where the solution should be. As I mentioned earlier in this thread, the application has full control here and should be the place to set it. I'll bet postfix has a setting for what outbound IP address to use.
Trying to coerce this at the OS level is much more difficult.
Especially with your phrase about "if packet enters..." There's two possible things you might mean by that.
#1 is if the packet coming in starts a TCP session. That session sets the two IP addresses, and the OS can't override that address for outbound packets. The usesrc setting is only valid for TCP sessions started by your machine.
#2 is if the "packet coming in" you refer to really means an email in (which gets completed), and then your machine sends an email back out. But then there's no association (in the OS) between the two emails, so it doesn't know that this mail "should" go out that interface.
In both cases, I think you'll want postfix to handle this.
Darren -
Need assistance in creating a logical interface in PIX 7.2
Hi,
I've recently upgraded my pix 525 from 6.3 to 7.2. Now I need to take a spare interface (ethernet4) enable this interface and create sub interfaces to use to communicate to my inside network by mapping to inside vlans.
In 6.3, I would do the following (example)
niterface ethernet4 vlan240 logical
nameif vlan240 PROD security 25
ip address PROD 192.168.1.2 255.255.255.0
Now that the 7.2 command set is really different and I do not have a test PIX to test with, I'm hoping that someone would have an example for me.
Goal: My remote location (VPN/GRE) needs to communicate to my local networlk. But, I am not advertising this subnet in ospf. I want to map an advertised IP to this inside non-advertised IP. Setting up a logical interface is how I can achieve this.
Please advise with samples.
Regards
jeffHi,
I think this will help :-
http://www.cisco.com/univercd/cc/td/doc/product/multisec/asa_sw/v_7_2/conf_gd/general/intrface.htm#wp1044006
Regards,
Vivek -
Interface virtual-template limitations
I am using 7204 as access concentrator for PPPOA sessions using interface virtual-templates. I want to know the maximum number of supported virtual interfaces. for 12.0, it's stated in cco documents that the maximum number of virtual interfaces is 300. starting from 12.2, it's mentioned that the maximum number is platform dependant. I am runing 12.2(27).
Thanks in advance...
Karim.Hello Karim,
I think you can issue the command ´show idb´ to see how many software IDB´s (and the virtual template is a software IDB) are supported by your router.
Refer to the document below for additional info:
Maximum Number of Interfaces and Subinterfaces for Cisco IOS Platforms: IDB Limits
http://www.cisco.com/en/US/products/sw/iosswrel/ps1835/products_tech_note09186a0080094322.shtml
HTH,
GP -
Hello,
can any one tell me the differences between logical and virtual.The meaning depends upon the context in which the terms are used.
-
Wwpn-derivation-virtualized-port
So I am digging the Cisco C210 boxes. I have several rolled out so far.
Just got a B series. I feel like I am back in catholic school being scolded! This thing hates me! :-)
I have gone through a firefly lab book to get familiar with the configuration. I "belive" I have everything setup correctly...
I created a service profile so I could in a couple of clicks apply it to all four of my servers. When I go to apply it I get
descr="Service profile Server1 configuration failed due to wwpn-derivation-virtualized-port"
Good ole google was not able to help me with this one. I'm old school Call Manager and Contact Center person. This virtualization stuff is very new. Zero experiance with SAN.
Is anyone able to tell me what I may have missed from the error?
Thanks in Advance!
DelDel,
What WWPN pool is configured for the HBAs in your service profile ?
We can expect this failure message when we are using " Hardware default " option and the blade is installed with Cisco M81KR adapter ( it does not have burnt in WWPN address )
If it is the case, then try creating a WWPN pool and configure the service profile / HBAs to use WWPN from the pool.
http://www.cisco.com/en/US/docs/unified_computing/ucs/sw/gui/config/guide/2.0/b_UCSM_GUI_Configuration_Guide_2_0_chapter_011111.html#task_106F15198C034D1BA1923DCCE2897F9F
HTH
Padma -
Does Solaris 10 support cisco Virtual Port Channels over IP?
Does anyone know if Solaris 10 support cisco Virtual Port Channels open IP?
Hi user11114413,
The issue you are seeing actually has little to do with VIP, and more to do with there being multiple IP addresses for us to choose from on your box. For such multi-IP boxes, you'll want to tell us the IP to use, and in your case you want to tell as a VIP. This can be done either by editing your operational configuration file, and including an <address> element within the <unicast-listener> element, or via the tangosol.coherence.localhost system property. For example:
<unicast-listener>
<well-known-addresses>
<socket-address id="1">
<address>1.2.3.260</address> <!--virtual ip -->
<port>8088</port>
</socket-address>
</well-known-addresses>
<address>1.2.3.260</address> <!--virtual ip -->
<port>8088</port>
</unicast-listener>or
java ... -Dtangosol.coherence.localhost=1.2.3.260If you are using the same operational configuration on all nodes in your cluster then the system property approach is likely preferable, and would only be necessary on the two machines sharing the VIP.
As for using VIP or an extended WKA list, the choice is yours, either will work. If you do go the VIP route, it would obviously be a very bad idea to simultaneously use the same VIP and port at the same time from the two machines.
thanks,
Mark
Oracle Coherence -
Using Logic with virtual guitarist
I'm trying to use logic with virtual guitarist. Do you use this as an instrument or midi? When I use it as an instrument virtual guitarist does not follow logic tempo. And when I use it as a midi track I can not play it since virtual guitarist is not a hardware. Any sugestions?
VG is a virtual instrument. If you want to use it within Logic, you need to convert the .vst into an AU (Audio Unit) so Logic can see and use it as .vst isn't supported anymore in OS X.
The .vst to AU conversion is best done via the VST-AU Wrapper application, available from the http://www.fxpansion.com website or your local dealer. No, I don't work for them, but I use the wrapper extensively for older .vst instruments in Logic.
If you need more detail information about this (and Virtual Guitarist in particular), you may want to check the VG forum here : http://bornemark.se/forum/viewforum.php?f=4&sid=a4bd0b1112e9d381261c09d8160fc1f7 -
Hi all,
How can i programatically get the total number of logical interfaces that are added to a particular interface ???
thanks,
rakeshHi,
Yes i am talking about the Logical interface. Considering that my n/w interface is "le0", i want to programatically determine what are the locial interfaces that are attached to it (i.e le0:1, le0:5.....etc)
thanks,
rakesh -
Read and write data from virtual port (bluetooth adaptor)
Hi,
I want to read and wirte data to the bluetooth adaptor by java. I connected my bluetooth adapter to COM3.(virtual port). Anybody help me with this.I need very urgent.
Thanks,
with regards,
thelayDeepa_05 wrote:
Hi,
I didn't get jar fileAnd?
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