I have a device which will be sending voice and data packets and is able to mark the packets with DSCP values. Voice, 18 and Data 42.If this was a straight through network, I'd be clear on how to handle this, but.....I will be putting this traffic into a VLAN to isolate it from some other traffic on the network. What is the best way to prioritize this traffic inside the VLAN? Will the Cisco switch look at and respect the DSCP values inside the VLAN and prioritize accordingly inside the VLAN? Or, do I need to do some sort of DSCP to 802.1p mapping? Another option I would be fine with would be mapping the DSCP values for voice and data to two different VLANs and then giving the voice VLAN priority over the data VLAN .... I'm using 3750E switches.
We tested a QoS in a Cisco 3750E, IOS: 12.2(58)SE2.Voice traffice in the correct Q without any problem, but all the others traffic the Defualt Q (0), tried to capture the traffic and tcp/udp port are correct.Any thing wrong with my ACL or DSCP - CoS?? ( that ACL works fin on 4500 and 6500) [code]
I have a Cisco ASA 5520 (8.0) and I'm trying to figure out how to prioritize traffic to specific websites (by either domain names or IP addresses/ranges). This document [URL] has some great examples, but I'm not able to create a class-map that will match addresses. I'm not doing any other traffic manipulation on this ASA.
I have a new VOIP implementation using 2960 switches. I want to prioritize voice traffic. After creating VLAN 2 I did the following:
Per Cisco, I did the following on my up-link ports:
switch port trunk allowed vlan 1,2 switch port mode trunk switch port nonegotiate priority-queue out mls qos trust cos switchport trunk allowed vlan 1,2 switchport mode trunk switchport nonegotiate priority-queue out mls qos trust cos spanning-tree port fast trunk spanning-tree bpduguard enable
On my ports where a VOIP phone was plugged in, I did the following:
switch port trunk allowed v lan 1,2switchport mode trunk switch port no negotiate priority-queue outmls qos trust cos spanning-tree port fast trunk spanning-tree bpduguard enable
How can I verify that my voice traffic is being prioritized?
How I can prioritize Web Ex, Skype and some two websites on Cisco equipment. My set up is such that my 512kbps link goes to a Cisco 1941 router>Cisco ASA 5505>Cisco Catalyst Switch 2960>Computer.I want to be able to prioritize this on my network and test that it actually works.
I have a Nexus 5500 which is the core of our network and we have access layer switches uplinked to it. I know by default the qos markings will be trusted.
1. On a trunk uplink from an access layer switch to the Nexus, I have "mls qos trust dscp". Will the DSCP marking be preserved when it reaches the Nexus?
2. How do I do prioritization of voice traffic on an uplink on Nexus based on DSCP EF?
Trying to set-up a priority queue for Voice and Video traffic, below is the current ASA config. The WAN link is 6mb, trying to limit the Internet traffic to 4mb and save 2mb for the PQ, config belowTraffic just isn't hitting the PQ
priority-queue outside queue-limit 512 tx-ring-limit 200 ! class-map Video description Video match dscp af31
i have a 3560 connecting to a sp with limited bandwidth. i have one interface on the switch whose traffic i do not want to drop. i want this traffic to go into the high priority queue. i am not sure how this should be configured, but here is my best guess and my current qos configuration on the switch:
I recently bought an EA4500 specifically to utilize the QoS feature. I have my xbox in the set up for the prioritization, but when I try to set the bandwidth to 250 kbps upload, it resets to 0. My xbox is hardwired to the router and I know most of the feature set of this particular router is geared towards wifi, but I would assume the QoS settings would apply to the wired devices as well. exchanging this router for one that supports DD-WRT?
There are several features that don't work and are returning errors. For starters, when trying to save settings for media/device prioritization I am receiving a 2123 error message. Unable to save settings. EA4500/N900 Router, Cisco Cloud Connect.
I need to use cisco 3750E switch on core. I want to know whether BGP is supported on this model or not?Currently i have c3750e-universalk9-mz.150-2.SE/c3750e-universalk9-mz.150-2.SE.bin" preinstalled. and i checked BGP is not supported on this IOS image.
The WCS haven't have new event since the count of event goes 40000.And, the wcs-3-0.log shows INFO[stspoll] Event Queue seems full.In the FAQ which says:#The WCS keeps the last 40,000 events in the system and clears them up after seven days. An event or alarm can have 1000 bytes on average.shouldn't it clears them up after seven days? how to clean events by manual?
I am in the process of upgrading our network switches and wondering if the .lic file will work with the new software or if I have to rehost for the move to 15.0. Its a remote site and I would like to get some solid info before I pull the trigger.
Also which IOS should I be upgrading to?
c3750e-ipbasek9-mz.150-2.SE.bin or c3750e-universalk9-mz.150-2.SE.bin
I have a 3750X-24T in our production environment that is showing very high number of OQD's in the 'show int sum' output for 4 of the Gigabit interfaces; the interfaces are each in a seperate port channel and there are no OQD's for the relevant port channel and there are no output drops showing in the output for the 'sh int' command for each interface.
The following are the OQD's for the relenvant interfaces Gi1/1/1: 0 Gi1/1/2: 0 Gi1/1/3: 0 Gi1/1/4: 0 Gi2/1/1: 4252879251 Gi2/1/2: 4251090833 Gi2/1/3: 4251754140 Gi2/1/4: 4294942102 Po1: 0 Po2: 0 Po3: 0 P04: 0
Gi1/1/1 and Gi2/1/2 assigned to Po1, and so on. IOS version: C3750E-IPBASEK9-M 12.2(58)SE2
have 2 3750's one is an 3750E the other one is a G... Since they are 2 different versions Do I need to correct ios for each for example my 3750E switch i would have
IP BASE c3750e-ipbasek9-mz.122-53.SE2.bin and for my 3750G switch should i use
Anyone know the maximum number of IPv4 routes supported per VRF (using VRF-Lite) on a Cisco 3750E stack (two switches in the stack). The current SDM template is 'desktop'.
I'm able to setup my 3750e switch to login through a radius server with my company user id and password but would like to be able to set it up that when I log in it drops me on the enable prompt. Right now I have to type >en.Then the enable password.
We're testing the reference system shown in the figure below. System Description Four 2960 switches are used for transport;Equipment 1 and Equipment 2 exchange packets for synchronization;To reach synchronization Equipment 1 and 2 must exchange data with a very low jitter. 2960 Configuration details Four our test puprose, we're using 100Mbit/s ports (22 and 23) as trunk.In order to obtain minimum jitter We performed these configurations:We Enabled QoS;We Marked Synchronization packets with CoS 7 and DSCP 63;We marked other kind of traffic inserted in different ports) with CoS 0;We set "trust DSCP" on trunk ports;On the trunk ports we mapped traffic with CoS 7/DSCP 63 (and only this) on output queue 1;We enabled the expedite queue (priority-queue out). QuestionWith these settings we aim at forcing our synchronization packtes to precede other kind of traffic and go from Equipment 1 to Equipment 2 with minimum jitter.Unfortunately we experienced high jitter when both synchronization packets and other traffic are sent through the systems.
We're seeing "OutDiscard" error on a LAN switch connected to newly migrated Cisco IP phones. All the other error counters are clean except for the OutDiscard. (please see attached "show int count err" output.) [URL].
According to the link above, the common cause of such discards can be to free up buffer space.(Am I seeing a switch buffer issue?) How to identify/resolve the cause of the OutDiscard.The switch is 3750-E running c3750e-universalk9-mz.122-44.SE6.bin
I am seeing on my 3750E series switches (WS-C3750E-48TD). I have multiple VLANs configured on here, one which is used as a 'workstation' VLAN. I have an inbound ACL applied to the VLAN interface *(int vlan 50 to be exact). This list is admittedly long at roughly 6000 ACE's. Now I just recently installed these switches as they replaced some 4507R switches which we moved to our new centralized DC. Here is the issue I am having. This same ACL was applied to the same VLAN interface on the 4507s when they were doing the work of the 3750s. What I used to be able to do was actually edit the ACL by removing it with no ip access-list extended WS-In and then followed up by the ip access-list extended WS-In ......and the lines I wanted in the ACL. I know I could use the line numbers to edit the ACL but this worked OK for me. When I would do this on the 4507R, the ACL was still applied to the interface but traffic never seemed affected by the removal and re-adding of the ACL. I did this by copying and pasting the ACL into a terminal window. It seemed as though on the 4507 the ACL was not compiled until the entire thing was in loaded in and therefore traffic was not processed by the ACL until the load was done
I have a 3750E stackable swtch and I need to configure neflow on it. Are there any IOS versions that support netflow on the 3750E? Is there any possible to configure netflow on a 3750E? I do not see any netflow commands available on the switch?
I have 3750E swiches with IOS v. 12.2(55)SE3. Couple servers connect to ths switch, after ping of IP this servers I can see mac addresses in mac address table.
For instance: sw1#show mac address-table vlan 20 Mac Address Table -------------------------------------------
Vlan Mac Address Type Ports(code) ---- ----------- -------- -----
When ip generate traffic to this server this mac address appear in table again on shot time (less than 10 seconds).
