3850/3750 autonomous or Distribution stacked layer Question

Hi all

I have a client with three buildings all very close to the other dorsal 62.5 MM of fibre. They exceeded it current topology and I am trying to implement a distribution layer using a couple of 3750's or 3850's. They have already invested in Netgear at the access layer and I try to make the two work together, Cisco and Netgear. My experience is with Cisco don't know Netgear as well. The mixed vendor environment needs tests, the thing I'm not sure of using a distribution layer stacked with channels of ether of the access layer.

The attached drawing shows the topology, I thought however, I have some concerns that I have documented in the drawing. Any advice would be appreciated.

Andy

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Poster

Would you consider using a chassis with redundant sup, power supplies and descenders, for the same device, on maps of different lines, as a device of distribution (or core)?  If so, it's about what you have with a battery (or VSS pair).  That is, if a frame (or a VSS pair) is a valid design, why a battery would be too.

The benefits you have noted on your schema, for a battery would also apply to a frame (or a VSS pair).  Plus, you get more bandwidth.  PLEASE didn't need to block a redundant L2 path and stacking cables can provide more bandwidth then port 'normal '.

EtherChannel should work between sellers using LACP.  (At least on Cisco, remember to choose an optimal hash algorithm.)

The main disadvantage of a pile of Cisco, as a single chassis support redundancy, all the material is in a physical location.  Something is happening to this unique physical location, you lose this distribution node.

Another downside, you are subject to a software problem, as a single logical device (applies also to the simple chassis or pair VSS), but with multiple devices of L2, you are then subject to defects of FHRP, STP, etc..

Tags: Cisco Network

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    *************************************************************************************************************************************

    #show CORE-3750Xs version

    ...

    c3750e-universalk9 - mz.122 - 58.SE1.bin

    *************************************************************************************************************************************

    CORE-3750Xs #show license

    1 function of the index: ipservices

    ...

    *************************************************************************************************************************************

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    IP 10.144.1.193 255.255.255.192
    no ip proxy-arp
    *************************************************************************************************************************************

    CORE-3750Xs #show run int vlan 72
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    IP 10.144.72.1 255.255.255.0
    IP helper 10.144.6.2
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    property intellectual cache wccp web redirection in
    IP pim sparse - dense mode
    *************************************************************************************************************************************

    #show run int vlan 64 CORE-3750Xs
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    IP helper 10.144.6.2
    no ip proxy-arp
    IP pim sparse - dense mode
    *************************************************************************************************************************************

    CORE-3750Xs #show run int po4
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    Description * Port channel of closet 114a *.
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    switchport trunk allowed vlan 2,3,9-12,20,40,41,72,100,608,614,1423,1620
    switchport trunk allowed vlan add 3001-3003
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    *************************************************************************************************************************************

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    Number of aggregators: 5

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    *************************************************************************************************************************************

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    *************************************************************************************************************************************

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    Number of aggregators: 5

    Protocol for the Port-Channel port group
    ------+-------------+-----------+-----------------------------------------------
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    *************************************************************************************************************************************

    CORE-3750Xs #show ip web cache wccp
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    Protocol Version: 2.0
    Status: usable
    Redirect: L2
    Package return: L2
    Directed packets: 0
    Connection time: 10:15:38
    Assignment: MASK

    Mask port DstAddr SrcPort DstPort
    ----  -------    -------    ------- -------
    0000: 0x00000000 0 x 00001741 0x0000 0x0000

    Value port DstAddr SrcPort DstPort CE - IP
    ----- -------    -------    ------- ------- -----
    0000: 0x00000000 0x00000000 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0001: 0x00000000 0x00000001 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0002: 0x00000000 0 x 00000040 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0003: 0 x 00000000 00000041 0 x 0 x 0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0004: 0x00000000 0x00000100 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0005: 0x00000000 0 x 00000101 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0006: 0x00000000 0 x 00000140 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0007: 0x00000000 0 x 00000141 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0008: 0x00000000 0 x 00000200 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0009: 0x00000000 0 x 00000201 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0010: 0x00000000 0 x 00000240 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0011: 0x00000000 0 x 00000241 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0012: 0x00000000 0 x 00000300 0000 0 x 0 x 0000 0x0A9001C2 (10.144.1.194)
    0013: 0x00000000 0 x 00000301 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0014: 0 x 00000000 00000340 x 0 0 x 0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0015: 0x00000000 0 x 00000341 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0016: 0x00000000 0 x 00000400 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0017: 0x00000000 0 x 00000401 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0018: 0x00000000 0 x 00000440 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0019: 0x00000000 0 x 00000441 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0020: 0x00000000 0 x 00000500 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0021: 0x00000000 0 x 00000501 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0022: 0x00000000 0 x 00000540 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0023: 0x00000000 0 x 00000541 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0024: 0x00000000 0 x 00000600 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0025: 0x00000000 0 x 00000601 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0026: 0x00000000 0 x 00000640 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0027: 0x00000000 0 x 00000641 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0028: 0x00000000 0 x 00000700 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0029: 0x00000000 0 x 00000701 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0030: 0x00000000 0 x 00000740 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0031: 0x00000000 0 x 00000741 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0032: 0x00000000 0 x 00001000 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0033: 0x00000000 0 00001001 x 0 x 0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0034: 0x00000000 0 x 00001040 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0035: 0x00000000 0 x 00001041 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0036: 0x00000000 0x00001100 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0037: 0x00000000 0 x 00001101 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0038: 0x00000000 0 x 00001140 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0039: 0x00000000 0 x 00001141 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0040: 0x00000000 0 x 00001200 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0041: 0x00000000 0 x 00001201 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0042: 0x00000000 0 x 00001240 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0043: 0x00000000 0 x 00001241 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0044: 0x00000000 0 x 00001300 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0045: 0x00000000 0 x 00001301 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0046: 0x00000000 0 x 00001340 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0047: 0x00000000 0 x 00001341 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0048: 0x00000000 0 x 00001400 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0049: 0x00000000 0 x 00001401 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0050: 0x00000000 0 x 00001440 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0051: 0x00000000 0 x 00001441 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0052: 0x00000000 0 x 00001500 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0053: 0x00000000 0 x 00001501 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0054: 0x00000000 0 x 00001540 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0055: 0x00000000 0 x 00001541 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0056: 0x00000000 0 x 00001600 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0057: 0x00000000 0 x 00001601 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0058: 0x00000000 0 x 00001640 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0059: 0x00000000 0 x 00001641 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0060: 0x00000000 0 x 00001700 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0061: 0x00000000 0 x 00001701 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0062: 0x00000000 0 x 00001740 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)
    0063: 0x00000000 0 x 00001741 0x0000 0 x 0000 0x0A9001C2 (10.144.1.194)

    *************************************************************************************************************************************

    CORE-3750Xs #show ip wccp web cache
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    Protocol Version: 2.0

    Identify service: web cache
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    Number of routers in Service Group: 1
    S/w redirected packets total: 0
    Process:                                     0
    CEF:                                          0
    Redirect the access-list: - none -.
    Redirect denied packets total: 0
    Packages not assigned total: 0
    Group access list: - none -.
    Total Messages refused for the Group: 0
    Total authentication failures: 0
    Total GRE bypassed packets received: 0

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    HTH

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    4 virtual Ethernet interfaces
    24 FastEthernet interfaces
    2 gigabit Ethernet interfaces
    Password recovery mechanism is activated.

    512K bytes of memory simulated by flash not volatile configuration.
    Basic Ethernet MAC address: 00:12:80:65:94:00
    Number of the motherboard: 8312-73-05
    Power supply part number: 341-0029-03
    Motherboard serial number: CAT08470DDE
    Power supply serial number: LIT0841015S
    Revision number of the model: D0
    Motherboard revision number: A0
    Model number: WS-C3750-24PS-S
    System serial number: CAT0847N0Y3
    Top Assembly part number: 800-21982-02
    Top of page revision number of the Assembly: B0
    Version ID: n/a
    Revision number of hardware consulting: 0x0A

    SW Version SW Image model switch ports
    ------   -----  -----              ----------              ----------
    * 3 26 WS-C3750 - 24 P 12.2, C3750 SE5 (35) - IPBASE-M

    Configuration register is 0xF

    ---------------------------------------------------------------------------------------------------------------

    C3750-1 #sh logging

    * Mar 1 05:00:33: % SYS-5-CONFIG_I: configured from the system memory

    * Mar 1 05:00:33: STACKMGR-5-SWITCH_READY %: switch 3 is READY

    * Mar 1 05:00:33: STACKMGR-4-STACK_LINK_CHANGE %: battery Port 1 3 switch has changed state down

    * Mar 1 05:00:33: STACKMGR-4-STACK_LINK_CHANGE %: battery Port 2 switch 3 has changed state down

    * Mar 1 05:00:34: % STACKMGR-5-MASTER_READY: Master Switch 3 is READY

    * Mar 1 05:00:34: % LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan10, state change downstairs

    * Mar 1 05:00:34: % LINEPROTO-5-UPDOWN: Line protocol on the Interface Vlan48, change of State down

    * Mar 1 05:00:34: % SYS-5-RESTART: System restarted.

    Cisco IOS software, software C3750 (C3750-IPBASE-M), Version 12.2 (35) SE5, RELEASE SOFTWARE (fc1)

    Copyright (c) 1986-2007 by Cisco Systems, Inc.

    Updated Friday 19 July 07 19:15 by nachen

    * Mar 1 05:00:34: % SNMP-5-start COLD: SNMP agent on host C3750-1 shall be the subject of a cold start

    * Mar 1 05:00:35: % LINK-5-CHANGED: Interface FastEthernet3/0/22, changed state down administratively

    * Mar 1 05:00:35: % LINK-5-CHANGED: Interface Vlan1, changed state down administratively * Mar 1 05:00:33: % SYS-5-CONFIG_I: configured from the system memory
    * Mar 1 05:00:33: STACKMGR-5-SWITCH_READY %: switch 3 is READY
    * Mar 1 05:00:33: STACKMGR-4-STACK_LINK_CHANGE %: battery Port 1 3 switch has changed state down
    * Mar 1 05:00:33: STACKMGR-4-STACK_LINK_CHANGE %: battery Port 2 switch 3 has changed state down
    * Mar 1 05:00:34: % STACKMGR-5-MASTER_READY: Master Switch 3 is READY
    * Mar 1 05:00:34: % LINEPROTO-5-UPDOWN: Line protocol on Interface Vlan10, state change downstairs
    * Mar 1 05:00:34: % LINEPROTO-5-UPDOWN: Line protocol on the Interface Vlan48, change of State down
    * Mar 1 05:00:34: % SYS-5-RESTART: System restarted.
    Cisco IOS software, software C3750 (C3750-IPBASE-M), Version 12.2 (35) SE5, RELEASE SOFTWARE (fc1)
    Copyright (c) 1986-2007 by Cisco Systems, Inc.
    Updated Friday 19 July 07 19:15 by nachen
    * Mar 1 05:00:34: % SNMP-5-start COLD: SNMP agent on host C3750-1 shall be the subject of a cold start
    * Mar 1 05:00:35: % LINK-5-CHANGED: Interface FastEthernet3/0/22, changed state down administratively
    * Mar 1 05:00:35: % LINK-5-CHANGED: Interface Vlan1, changed state down administratively

    The bugs that I've provided are also associated with stand-alone switches, I can't share bug internal details.

    I've seen this problem before, & I understand that it is a standalone switch.

    Most of the time that it would be because ports of defective battery which can not really be detected there software. I also looked at the case attached to the bug & found a few similar cases.

  • move to layer textFrame

    I want to spend a textFrame to another layer, but does not know how...

    Can someone point me in the right direction?

    Hi Fubar,

    Ho Yes!... turn left, go 100 m turn right... joke

    Then.

    Try this:

    app.activeDocument.textFrames[0].move(app.activeDocument.layers[0],ElementPlacement.INSIDE)
    

    This will put your first linked text frames to / IN / inside of your top of the layer stack (layer [0])

    You can also use magical selector (getByName) like this

    app.activeDocument.textFrames.getByName("myText").move(app.activeDocument.layers.getByName("MyLayer"),ElementPlacement.INSIDE)
    

    Next

    art.chrome

  • 3560 form/sharing of bandwidth QoS SRR

    I have the following Setup

    Core Stack (3750) - devices of Distribution range battery (3750) - access switches (3560).

    I want to implement bandwidth shape/share srr-queue on interface

    My question is

    1 - on which of your interfaces, I should implement the command and on what boxes?

    Hi Asus,

    Here's my recommendation & given you some post as well to understand the logic behind it for reference.

    Switch-Switch: Trust DSCP

    Switch-AP: Trust DSCP (if APs are local mode & switch port is configured as access ports)

    Switch-AP: Trust CoS (if your APs are in local switching FlexConnect mode & switch port is configured as a Trunk Port)

    http://mrncciew.com/2013/07/23/QoS-for-h-reap/

    also examine the underside as well.

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    http://mrncciew.com/2013/07/26/VoIP-phone-switchport-config/

    Switch - WLC: Trust CoS

    http://mrncciew.com/2013/02/24/best-practice-QoS-config/

    SRR orders must configure all interfaces with the priority queue if you want to do the voice traffic prioratization (DSCP EF traffic).

    http://mrncciew.com/2012/11/26/375035602960-wired-QoS/

    Take note that the QoS controls are specific hareware & always refer to the specific product configuration guide during Setup.

    HTH

    Rasika

    Pls note all useful responese *.

  • How can I simulate 50% load on a point to point WAN circuit to measure the latency of a pre-determined SLA?

    I just built a remote DMVPN RADIUS with an 300Mbps private point-to-point circuit to the data center.  My manager has promised an SLA of< 20ms="" at="" 50%="" bandwidth="" utilization="" (i="" think="" he="" made="" that="" up?!).=""  i'm="" trying="" to="" sort="" out="" the="" best="" way="" to="" test/document/baseline="" this="" statement="" for="" the="" customer.=""  my="" questions="">

    Can how best I simulate a 50% load on the circuit? -My thoughts would be to set up some sort of maximum bandwidth QoS between 2 hosts and push then a large amount of traffic across the link and then average latency statistics ICMP to ping between the same two hosts.

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    On the client side of Iperf use the-b option to specify the available bandwidth. [UDP]

    I hope this helps.

    See here:

    http://OpenManiak.com/Iperf.php

    UDP tests: (-u), bandwidth settings (-b)
    Also see the section "Jperf.

    UDP tests with the argument u will give valuable information on the jitter and packet loss. If you do not specify the argument - u, Iperf uses the TCP protocol.
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    ------------------------------------------------------------
    Client that connects to 10.1.1.1, port UDP 5001
    Send datagrams 1470 bytes
    The UDP buffer size: 108 KB (default value)
    ------------------------------------------------------------
    [3] 10.6.2.5 local port 32781 connected with 10.1.1.1 port 5001
    [3] 0, 0 - dry 10.0 11.8 MB 9.89 Mbps
    [3] send datagrams 8409
    [3] the server report:
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    #iperf s u-i 1

    ------------------------------------------------------------
    Server that is listening on port UDP 5001
    Receipt of datagrams 1470 bytes
    The UDP buffer size: 8.00 KByte (default)
    ------------------------------------------------------------
    [904] 10.1.1.1 local port 5001 connected with 10.6.2.5 port 32781
    [ID] interval transfer band jitter bandwidth Total lost datagrams
    [904] 0,0-1,0 s 1.17 Mbps ms 1,830 9.84 MB 0 / 837 (0%)
    [904] 1.0-2.0 sec 1.18 MB 9.94 Mbps 1,846 ms 5 / 850 (0.59%)
    [904] 2.0-3.0 s 1.19 MB 9.98 Mbps 1,802 ms 2 / 851 (0.24%)
    [904] 3.0-4.0 sec 1.19 MB 10.0 Mbit/s ms 1,830 0 / 850 (0%)
    [904] 4.0-5.0 sec 1.19 MB 9.98 Mbps 1,846 ms 1 / 850 (0.12%)
    [904] 5.0-6.0 sec 1.19 MB 10.0 Mbps 1,806 ms 0 / 851 (0%)
    [904] 6,0-7,0 sec 1.06 MB 8.87 Mbps 1,803 ms 1 / 755 (0.13%)
    [904] 7.0-8.0 sec 1.19 MB 10.0 Mbit/s ms 1,831 0 / 850 (0%)
    [904] 8.0-9.0 sec 1.19 MB 10.0 Mbps 1.841 ms 0 / 850 (0%)
    [904] 9, 0-10, 0 sec 1.19 MB 10.0 ms 1,801 Mbits/sec 0 / 851 (0%)
    [904] 0, 0 - dry 10.0 11.8 MB 9.86 Mbps 2,618 ms 9 / 8409 (0.11%)

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