3750 bandwidth limitation between the same vlan over the trunk

Hi All,
I have 2 3750G series switches on the trunk link. some machines are part of vlan1 on the switch 1 and some machines are the part of the same vlan1 on the other switch2. I need to limit the bandwidth between the switches for the vlan1. picture is attached.
I tried to do through the modulare policy frame work (class-map/service-map and policy-map using the police command) but problems are
1) 3750 does not support output service policy, so i cannot apply the policy on the output of the trunk link.
2) I can apply the input policy but it will be only for one machine but not for the others on the same switch. if i apply the policy on per port basis then every port has separate bw limitation. I require to limit the bandwidth on per vlan basis on the trunk port. like vlan 1 takes 10 MB, VLAN2 takes 10 MB on the trunk link when communicating between the same vlans.
Is there any solution for that scenario? your help in this case will be higly appriciated. As its the layer 2 communication, its hard for me to find the solution. if it was layer 3 then i can do it easily by using the rate-limit commmand on the interface.
thanks

On the 4500 series we use vlan-range for this,
conf t
qos aggregate-policer 10MB 10 mbps 1250000 byte conform-action transmit exceed-action drop
policy-map 10MB
class class-default
police aggregate 10MB
interface GigabitEthernet1/1
switchport trunk encapsulation dot1q
switchport trunk allowed vlan 1,10,12,15
switchport mode trunk
switchport nonegotiate
vlan-range 1
service-policy input 10MB
service-policy output 10MB
end
dunno if the 3750's have the same options

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Under which IOS image could you find this command?
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or
Switch(config)#mls qos srr-queue output ?
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regards
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Hello manish,
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Cant communicate between nodes on the same vlan but on different switches (cat/nexus)

Very odd situation that I cant quite figure out.
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Each Nexus has PO6 which connects to a Cat3750
The nodes are all on vlan 46.
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Here is an oddity. Nodes on the CAT switch CAN ping nodes on the nexus switches.
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6      Po6         up     success     success                    1,31,34,46,200,600-605
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id     Port        Status Consistency Reason                     Active vlans
6      Po6         up     success     success                    1,31,34,200,600-605
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Here are the running configs for PO6 on both switches (identical)
MTL-N3548COLO-1# sho run int po6
interface port-channel6
switchport mode trunk
spanning-tree port type normal
speed 1000
vpc 6
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Folks,
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in vlan rewrite example have have difference vlans on both sides (ingress and egress) how does the switch or MPLS know that the packet is going from one vlan to the other?
Thanks,

Hello,
in AToM - as you described - there will be two labels involved, very much like in MPLS L3VPN. The top label will allow the transportation to the proper PE and the VC-label will identify the interface/port/VLAN.
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The decision where to forward the frame in the egress PE is solely determined from the VC label. Therefore one could even have the same VLAN for many customers. This is similar to IP address overlap in the MPLS L3VPN case.
I am not familar with the term "switch mode" you use above. The other option with EoMPLS is called "port mode" afaik. See f.e.
http://www.cisco.com/en/US/products/hw/routers/ps368/products_configuration_guide_chapter09186a00801e5c06.html#wp1128955
"Ethernet over MPLS
Ethernet over MPLS works by encapsulating Ethernet PDUs in MPLS packets and forwarding them across the MPLS network. Each PDU is transported as a single packet. There are various ways to configure Ethernet over MPLS:
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Port modeallows all traffic on a port to share a single VC across an MPLS network.
In port mode there will be no subinterfaces and VLAN tags defined at the PE routers. Instead all incoming ethernet frames will be "copied" from one port to another. I personally refer to this as an MPLS cloud playing the role of a "Cat5 cable simulator". The only thing a PE does besides transportation of ethernet frames is error checking (and dropping if the FCS is not correct).
Hope this helps! Please rate all posts.
Regards, Martin

Itunes keeps downloading the same songs over and over again on a shared library

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Share Library on NAS box, mapped drive paths to drive letters.
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This is new behaviour. Has not happend like this till today.
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Adriana,
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Neither a .mac nor IMAP account folder will contain a MessageUidsAlreadyDownloaded file . However, your POP folder should have such a file or two, to control duplicate downloads of messages remaining on the server -- POP was originally designed to remove upon download, but now that many people use more than one computer, it is logical to sometimes leave messages on the server to be download onto other computers.
In the Finder, open Home/Library/Mail and look for a folder named to begin with POP and including the server and/or email address in the name. If there is not a POP folder, then the account has NOT been set up to be something other than POP. If there is a POP folder, it should contain the MessageUidsAlreadyDownloaded.
More info, please.
Ernie

ACE30-MOD-k9 in bridge mode. Individual server in the same vlan of Real Servers not reacheable.

I configured ACE30-MOD-K9 in bridge mode and I configured a server farm with his real servers. The traffic passes and is balanced correctly between all RSERVER. But I can not contact a server that is on the same vlan of the serverpharm but doesn't belong at this serverfarm.
I Thought that the traffic directed to this "spare" server shouldn't be balanced but the bridge should permit traffic to pass. (trasperent mode) Is it correct ?
What does ACE in bridge mode with traffic directed to servers that do not belong to any server farm but are present on the same VLAN (same bridge group)?
In rispect at the following configuration 10.10.10.168 isn't reacheable
access-list INBOUND line 8 extended permit ip any any
access-list INBOUND line 16 extended permit icmp any any
probe http HTTP_PROBE1
expect status 200 200
rserver host RS_WEB1
ip address 10.10.10.163
inservice
rserver host RS_WEB2
ip address 10.10.10.164
inservice
rserver host RS_WEB3
ip address 10.10.10.165
inservice
rserver host RS_WEB4
ip address 10.10.10.167
inservice
serverfarm host SF_FIREGROUP
rserver RS_WEB1
    inservice
rserver RS_WEB2
    inservice
rserver RS_WEB3
    inservice
rserver RS_WEB4
    inservice
sticky ip-netmask 255.255.255.255 address source sticky-ip
replicate sticky
serverfarm SF_FIREGROUP
sticky http-cookie myCookie sticky-cookie
cookie insert browser-expire
serverfarm SF_FIREGROUP
class-map match-any VS_FIREGROUP
2 match virtual-address 10.10.10.169 tcp eq www
4 match virtual-address 10.10.10.169 tcp eq 8081
5 match virtual-address 10.10.10.169 tcp eq 8082
6 match virtual-address 10.10.10.169 tcp eq 8083
7 match virtual-address 10.10.10.169 tcp eq 8084
8 match virtual-address 10.10.10.169 tcp eq 8085
9 match virtual-address 10.10.10.169 tcp eq 8097
class-map match-any VS_FIREGROUP_HTTPS
2 match virtual-address 10.10.10.169 tcp eq https
policy-map type loadbalance first-match HTTP
class class-default
    sticky-serverfarm sticky-cookie
policy-map type loadbalance first-match HTTPS
class class-default
    sticky-serverfarm sticky-ip
policy-map multi-match HTTP_HTTPS_MULTI_MATCH
class VS_FIREGROUP
    loadbalance vip inservice
    loadbalance policy HTTP
    loadbalance vip advertise active
class VS_FIREGROUP_HTTPS
    loadbalance vip inservice
    loadbalance policy HTTPS
    loadbalance vip advertise active
interface vlan 4
bridge-group 1
access-group input INBOUND
service-policy input HTTP_HTTPS_MULTI_MATCH
no shutdown
interface vlan 700
bridge-group 1
access-group input INBOUND
no shutdown
interface bvi 1
ip address 10.10.10.150 255.255.255.0
no shutdown
ip route 0.0.0.0 0.0.0.0 10.10.10.1
Thanks a lot
Francesco

Hi Francesco,
Just to add more a bit, A bridge group is very similar to routed mode except ACE cannot NAT pass through traffic, vlan's cannot be shared and couple of other things but client's should be able to access the server as in before.
But also whether in bridge or routed mode, ACE does create flows and applies other security parameters if configured to the traffic. This is for security. Also, ACE should know the MAC of the device to forward the traffic to. Can you check if ACE has the MAC of the destination? You can also put a route for testing purpose and see if that resolves the issue. That should probably be the quickest way to check if ACE is creating any issue here.
Regards,
Kanwal

Problem in 3750 with multiple IP segment in same VLAN

Hi,
I've problems in 3750 and would like to ask for help.
I've 3750 switch with standard image. Because of lacking IP addresses, I'm going to redesign the IP scheme. Before complete migrate to new IP range, I've to let new IP segment co-exist with old IP segment for a while (I've 3 VLANs that have same situation). For example, 10.10.13.0/24 (old) will co-exist with 10.10.32.0/21 (new) in same VLAN (let say VLAN 32).
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interface VLAN 32
ip address 10.10.13.2 255.255.255.0 secondary
ip address 10.10.32.2 255.255.248.0
standby 14 ip 10.10.13.3
standby 40 ip 10.10.32.3
I've two PCs. PC-A is 10.10.13.250 and PC-B is 10.10.33.250, both are using HSRP IP as default gateway (the subnet mask are correct).
My problem is:
Two PCs can not ping to each other. I can not ping to both PCs from 3750. But if I'm using physical IP as their gateway (such as 10.2.13.2 for PC-A and 10.2.32.2 for PC-B), then both PCs can be ping each others.
How can I solve the problems if I've to use HSRP IP as default gateway?

I don't get it. What is the significance of standby 1 and 2 VS standby 14 and 40? The only difference I noticed is the lower number of standby group goes with primry and higher goes with secondary.
If possible, can you also try the same config you used before except swapping the group number?
e.g.
interface VLAN 32
ip address 10.10.13.2 255.255.255.0 secondary
ip address 10.10.32.2 255.255.248.0
standby 40 ip 10.10.13.3
standby 14 ip 10.10.32.3

When ever enter the date start date up to next year same date between the days divided into 8 parts

when ever enter the date start date up to next year same date between the days divided into 8 parts
Q1.1 (YYYY) = 1st half of Quarter 1 for year YYYY
Q1.2 (YYYY) = 2nd half of Quarter1 for year YYYY
Q2.1 (YYYY) = 1st half of Quarter 2 for year YYYY
Q2.2 (YYYY) = 2nd half of Quarter 2 for year YYYY
Q3.1 (YYYY) = 1st half of Quarter 3 for year YYYY
Q3.2 (YYYY) = 2nd half of QuarterQ3 for year YYYY
Q4.1 (YYYY) = 1st half of Quarter 4 for year YYYY
Q4.2 (YYYY) = 2nd half of Quarter 4 for year YYYY
Here YYYY depicts the year.
e.g. Q1.2 (2014) depicts the 2nd half of Quarter 1 for year 2014.
The description of these values are explained below.
The table below provides the description about each value:
Quarter     Quarter Range      Start Date
Q1.1      1 Jan - 15 Feb         1st Jan
Q1.2      16 Feb-31 Mar         16th Feb
Q2.1      1 Apr- 15 May          1st Apr
Q2.2      16 May-30 June       16th May
Q3.1      1 Jul-15 Aug             1th Jul
Q3.2      16 Aug -30 Sep       16th Aug
Q4.1      1 Oct -15 Nov           1st Oct
Q4.2      16 Nov – 31 Dec      16th Nov
The dropdown values in time window needs to be updated as per date entered by the user in the Audit Plan start date and
should display the next four Quarter (each divided in 2 half i.e. Eight values ) along with the year from the selected Audit plan start date.
for eg. If the Plan start date is given as August 10 2013 then the Time window will display the following options:
Q3.2 (2013)
Q 4.1 (2013)
Q 4.2 (2013)
Q 1.1 (2014)
Q1.2 (2014)
Q2.1 (2014)
Q 2.2 (2014)
Q 3.1 (2014)
You can refer to the Table above and look that 10 Aug 2013 falls under the Q3.1 so Time window will display the next next 8 half Quarters ( Total 4 Quarter) till Q 3.1 for the year 2014.

Hello,
WITH half_quarters AS(
    SELECT ADD_MONTHS(TRUNC(DATE '2013-08-15','Q'), 3*(LEVEL - 1)) hq_start
           ,1 part
    FROM    dual
    CONNECT BY ROWNUM <= 5
    UNION ALL
    SELECT ADD_MONTHS(TRUNC(DATE '2013-08-15','Q'), 3*(LEVEL - 1) + 1) + 15 hq_start
           ,2 part
    FROM    dual
    CONNECT BY ROWNUM <= 5
,ordered_half_quarters AS(
    SELECT hq_start
           ,part
           ,ROW_NUMBER() OVER (ORDER BY hq_start) r
    FROM    half_quarters
    WHERE   hq_start > DATE '2013-08-15'
SELECT 'Q '||TO_CHAR(hq_start,'Q')||'.'||part||' ('||TO_CHAR(hq_start,'YYYY')||')' q
FROM    ordered_half_quarters
WHERE   r <= 8
ORDER BY r;
Q
Q 3.2 (2013)
Q 4.1 (2013)
Q 4.2 (2013)
Q 1.1 (2014)
Q 1.2 (2014)
Q 2.1 (2014)
Q 2.2 (2014)
Q 3.1 (2014)
half_quarters generates the start dates of every half of a quarter, starting with the begin of the first quarter that contains the sample date.
The next step is to order the dates and to select only those after the sample date.
The last part formats the output and orders the data.
Regards
Marcus

Load balancing within the same ACE across two different contexts residing on the same vlan

I'm working on a design that requires traffic be sent to a different context in the same ACE. The question I have is can this be done when both reside on the same VLAN. Would the traffic in this case be handled at layer 2 instead of layer 7. Would I have to create a seperate subnet in order to provide loadbalancing?
|__________________|
|   | vlan 5         |         |
    |                  |
    |                  |
Context A        |
                       |
                       |
                    Context B
Thanks, Jerilyn

by design, two contexts on the same box in the same vlan can't communicate. You have to use an external L3 device.
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FCIP Peer in the same VLAN

Hi,
I will have 2 data centre connected with a 1gb possibly 2 x 1gb ethernet link.
There will be some 802.q trunking between location and some traffic will be routed.
I have the option of having my FCIP peer in the same vlan and carried in the trunk. Or have them in different VLAN and routed between location.
Initiallay I though routed would be good because I can use QoS to prioritise FCIP traffice.
But could I still achieve this using single vlan. and is it allowed.
both site are connect using 6509 with sup720s
Thanks
John

Hi John,
For the FCIP link it is just an IP connectivity. So, you can do in both ways as you describe. You can route it or use a vlan. Just make sure that you have no too hign RTT. And also there RTT timout setting on FCIP you can play with that according to your RRT in your network.
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Hakan.

ACE30_MOD-K9 in bridge mode. Individual servers in the same vlan of rserver not reach.

I configured ACE30-MOD-K9 in bridge mode and I configured a server farm with his real servers. The traffic passes and is balanced correctly between all RSERVER. But I can not contact a server that is on the same vlan of the serverpharm but doesn't belong at this serverfarm.
I Thought that the traffic directed to this "spare" server shouldn't be balanced but the bridge should permit traffic to pass. (trasperent mode) Is it correct ?
What does ACE in bridge mode with traffic directed to servers that do not belong to any server farm but are present on the same VLAN (same bridge group)?
In rispect at the following configuration 10.10.10.168 isn't reacheable
access-list INBOUND line 8 extended permit ip any any
access-list INBOUND line 16 extended permit icmp any any
probe http HTTP_PROBE1
expect status 200 200
rserver host RS_WEB1
ip address 10.10.10.163
inservice
rserver host RS_WEB2
ip address 10.10.10.164
inservice
rserver host RS_WEB3
ip address 10.10.10.165
inservice
rserver host RS_WEB4
ip address 10.10.10.167
inservice
serverfarm host SF_FIREGROUP
rserver RS_WEB1
    inservice
rserver RS_WEB2
    inservice
rserver RS_WEB3
    inservice
rserver RS_WEB4
    inservice
sticky ip-netmask 255.255.255.255 address source sticky-ip
replicate sticky
serverfarm SF_FIREGROUP
sticky http-cookie myCookie sticky-cookie
cookie insert browser-expire
serverfarm SF_FIREGROUP
class-map match-any VS_FIREGROUP
2 match virtual-address 10.10.10.169 tcp eq www
4 match virtual-address 10.10.10.169 tcp eq 8081
5 match virtual-address 10.10.10.169 tcp eq 8082
6 match virtual-address 10.10.10.169 tcp eq 8083
7 match virtual-address 10.10.10.169 tcp eq 8084
8 match virtual-address 10.10.10.169 tcp eq 8085
9 match virtual-address 10.10.10.169 tcp eq 8097
class-map match-any VS_FIREGROUP_HTTPS
2 match virtual-address 10.10.10.169 tcp eq https
policy-map type loadbalance first-match HTTP
class class-default
    sticky-serverfarm sticky-cookie
policy-map type loadbalance first-match HTTPS
class class-default
    sticky-serverfarm sticky-ip
policy-map multi-match HTTP_HTTPS_MULTI_MATCH
class VS_FIREGROUP
    loadbalance vip inservice
    loadbalance policy HTTP
    loadbalance vip advertise active
class VS_FIREGROUP_HTTPS
    loadbalance vip inservice
    loadbalance policy HTTPS
    loadbalance vip advertise active
interface vlan 4
bridge-group 1
access-group input INBOUND
service-policy input HTTP_HTTPS_MULTI_MATCH
no shutdown
interface vlan 700
bridge-group 1
access-group input INBOUND
no shutdown
interface bvi 1
ip address 10.10.10.150 255.255.255.0
no shutdown
ip route 0.0.0.0 0.0.0.0 10.10.10.1
Thanks a lot
Francesco

Hi Francesco,
Just to add more a bit, A bridge group is very similar to routed mode except ACE cannot NAT pass through traffic, vlan's cannot be shared and couple of other things but client's should be able to access the server as in before.
But also whether in bridge or routed mode, ACE does create flows and applies other security parameters if configured to the traffic. This is for security. Also, ACE should know the MAC of the device to forward the traffic to. Can you check if ACE has the MAC of the destination? You can also put a route for testing purpose and see if that resolves the issue. That should probably be the quickest way to check if ACE is creating any issue here.
Regards,
Kanwal

Hello! I have configured my Wireless network to support bonjour protocol. When I support mDNS in the same Vlan I can see the Apple TV with my iPhone, but I cannot see it with my iPad.

Hello! I have configured my Wireless network to support bonjour protocol. When I support mDNS in the same Vlan I can see the Apple TV with my iPhone, but I cannot see it with my iPad. Someone know if there is any different in the Bonjour protocol between the iPhone and the iPad???
It is like if the iPad changes the process at some point...
Thank you!

You don't need to configure anything specific for it to work unless you had some special filtering in place already.
What do you mean specificly by can not "see" it with your iPad?

3750 bandwidth limitation between the same vlan over the trunk

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