Cisco Switching/Routing :: C4506 - L3 Subinterfaces Between Two Switches
Jul 3, 2012
I have two C4506 switches and I would like to create two L3 links between them by using only one physical link. I will then assign each L3 link to a different VRF.
I think I have two choices but I'm not sure however that the second one is possible...
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1st choice: creating two VLANs and two SVIs on each switch
interface Vlan10
ip address 10.10.10.1 255.255.255.252
ip vrf forwarding vrf1
interface Vlan20
ip address 10.10.10.5 255.255.255..252
ip vrf forwarding vrf2(code)
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Mar 12, 2013
We are facing problem with Cisco IP phones which are connected to module WS-X4248-RJ45V.Phones are getting restarted and sometimes phones will not take power.Initially we suspected issue with power consumption, but we have enough power in the module.
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Dec 20, 2011
What the message below means? It's from our WS-C4506-E log running Version 03.01.01.SG.
Dec 20 16:27:26.182: (Suppressed 851 times)Dup Packet Fail for Sw PortDec 20 2011 16:27:28.068 UTC: %LINK-3-UPDOWN: Interface GigabitEthernet4/22, changed state to upDec 20 2011 16:27:29.070 UTC: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet4/22, changed state to upDec 20 2011 16:29:13.738 UTC: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet4/22, changed state to downDec 20 2011 16:29:14.738 UTC: %LINK-3-UPDOWN: Interface GigabitEthernet4/22, changed state to downDec 20 16:42:37.173: (Suppressed 162 times)Dup Packet Fail for Sw PortDec 20 2011 16:42:39.071 UTC: %LINK-3-[Code]....
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Sep 14, 2012
I have set up a couple of vlans on a cisco 1721 router 4esw card using the vlan database and assigning an ip address of 192.168.1.x and 192.168.2.x for each vlan interface.Strangely enough connected computers can talk to the other vlan and I have not set any subinterfaces on the etherner0 (layer 3) and not even connected a cable.Is there any reason why this should happen since they should not talk to eachother being on seperate vlans.Doing a tracert shows that first the vlan ip address is hit and then straight to the target pc in the other vlan?
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Dec 13, 2011
We have cisco 4506 and this got reloaded automatically and showing reload in show version output but no one made switch reload.
CORE-SW-2 uptime is 8 minutes
System returned to ROM by reload
System restarted at 12:37:58 IST Wed Dec 14 2011
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Aug 30, 2010
I have a problem with cpu high.tell me if normal have this process?
CPU utilization for five seconds: 29%/0%; one minute: 29%; five minutes: 30%
PID Runtime(ms) Invoked uSecs 5Sec 1Min 5Min TTY Process
29 198216576 402619350 492 15.83% 15.87% 15.68% 0 Cat4k Mgmt HiPri
30 175197296 96703435 1811 10.23% 10.10% 10.64% 0 Cat4k Mgmt LoPri
Cisco IOS Software, Catalyst 4000 L3 Switch Software (cat4000-I9S-M), Version 12.2(25)EWA14, RELEASE SOFTWARE (fc1)Technical Support: [URL] Copyright (c) 1986-2008 by Cisco Systems, Inc.Compiled Tue 20-May-08 18:49 by chendahImage text-base: 0x10000000, data-base: 0x114BE208
ROM: 12.2(31r)SG2Dagobah Revision 226, Swamp Revision 34
System returned to ROM by reloadSystem restarted at 00:36:52 UTC Sat Dec 10 2011System image file is "bootflash:cat4000-i9s-mz.122-25.EWA14.bin" cisco WS-C4506 (MPC8245) processor (revision 10) with 262144K bytes of memory.MPC8245 CPU at 266Mhz, Supervisor II+Last reset from Reload1 Virtual Ethernet interface144 FastEthernet interfaces2 Gigabit Ethernet interfaces511K bytes of non-volatile configuration memory.Configuration register is 0x2102
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Feb 7, 2013
I am not getting interface up/down logs in my switch console through show logging command. Switch model cisco WS-C4506-E and IOS :- cat4500e-ipbasek9-mz.122-53.SG3.bin. I have done below mention configurations, we can't configure logging level beyond informational. [code]
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May 25, 2013
Switch automatically restarts for no reason , I have upgraded the software.can not find fault. more crashinfo, see the following output:
HKZ-SSL-4-NAN-4506#more crashinfo:data
Current Time: 5/27/2013 10:28:10
Last Power Failure: 05/08/2013 16:55:28
Last Reload Status: 00000000
Last Software Reset State: 00000301
[code]...
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Mar 24, 2013
I installed WS-C4506-E 3 day ago. I discovered someting different module status Right at the end of the module ( WS-X4648-RJ45-E ) show red led. this is not port led i try to reset module several time. but it's same status. but this is operating now nomally I upload picture.. and this is module status and diagnostic result
Error code ------------------> 3 (DIAG_SKIPPED)
This Case is DOA(Dead of arrival ?
C4506#sh modChassis Type : WS-C4506-E
Power consumed by backplane : 0 Watts
Mod Ports Card Type Model Serial No.---+-----+--------------------------------------+------------------+-----------1 6 Sup 7L-E 10GE (SFP+), 1000BaseX (SFP) WS-X45-SUP7L-E ABCDE1234562 24 1000BaseX (SFP) WS-X4624-SFP-E ABCDE123456 6 48 10/100/1000BaseT (RJ45) WS-X4648-RJ45-E ABCDE123456
M MAC addresses Hw Fw Sw Status--+--------------------------------+---+------------+----------------+---------1 b0fa.ebe5.16c0 to b0fa.ebe5.16c5 1.1 15.0(1r)SG3 03.03.00.SG Ok 2 b0fa.ebc6.5b70 to b0fa.ebc6.5b87 1.2 Ok 6 10f3.1197.1490 to 10f3.1197.14bf 2.1 Ok
[code]....
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Jun 11, 2013
I have 30 switched in my corporate network it’s all up and running all switches running by default configuration and connected to WS-C4506 core switch our dhcp server pooling 192.168.100.1/27 network. Now we need to configure new Vlan for finance department this department has more than 200 users. If my server distributes 192.168.200.0 range ip can vlan2 automatically assign ip 200.0 addresses to finance department.All switches running default config no ip address assigned.
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Nov 18, 2011
If I have two stackable switches one switch uplinks to one 6509 core switch and the other connection uplinks to another 6509 core switch, and also the other stackable switch does not connect to the core switches. Because I am using hsrp and also we are not using vss then one uplink to the core is not in used only ones is so then how does creating an etherchannel between does two uplinks to both core switches benefit me in anyway such as more bandwith and using both uplinks at the same time or I'm I wrong?
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Nov 14, 2011
If I have two stackable switches were only one stackable switch has two uplinks one uplink goes to one core 6509 switch and the other uplink goes to the other 6509 core switch can a Layer 3 etherchannel be used if each uplink go to a different core switch, by the way hsrp is running between both switches and also can you give an example how data will be routed from the stackable switch through the ethernetchannel to one of the core switch accross the WAN to another core switch?
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Sep 13, 2011
Does anyone know if it's possible to use a single interface on the ASA for both the failover interface and for stateful failover? Here's my situation.I'm looking to provision a pair of ASAs and I want to do stateful failover.The problem is that I need four interfaces (inside, outside, and two physical DMZ interfaces).I'm looking at either the 5520s or 5540s and these boxes need to run the IDS SSMs, so I can't use the 4-port expansion SSM.
I want to do stateful failover so I need two failover interfaces.What I'm wondering is if I can take one physical interface,run two subinterfaces on it, and then use those two subinterfaces for my failover and stateful failover interfaces.That would leave me with the four interfaces that I need for everything else
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Jun 17, 2012
I have an ASA 5520 running 8.0(3) with two Subinterfaces configured like this:
=================================
interface GigabitEthernet0/1
nameif inside
security-level 100
no ip address
!
interface GigabitEthernet0/1.72
description VLAN 72
[code]....
(notice that they have the same security-level)I need to control the traffic between them with ACLs so I in ASDM unchecked "enable traffic between two or more interfaces with same security level" and "enable traffic between two or more hosts connected to the same interface"Now I cannot ping from one Vlan to the other, as expected,,, but I tried many different ACLs and I cannot ping or telnet to the other side from either one.
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May 2, 2012
i have a pix 525 running 8.0(4) and asdm 6.1(5)i have two ethernet interfaces, and two gb ethernet interfaces
i connected both gb ethernet interfaces to a switchport, configured as trunkcan't seem to activate subinterfaces on the gb interface on the pix 525.
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Mar 19, 2012
I have problems to configure CBWFQ on a ethernet sub-interface on a Cisco Router ASR 1001. Then I applied the policy in the physical interface but it should be is in the sub-interface. How can I configure CBWFQ on sub-interface in ASR 1001. (version 3.02).
Error Messages:
CBWFQ: Not supported on subinterfaces and efps
This the final output:
interface GigabitEthernet0/0/0
description Conexion WAN
bandwidth 153600
no ip address
load-interval 30
no negotiation auto
[code]....
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Jan 30, 2013
i have a couple of ASA 5510 in Active/Failover configuration. Failover LAN is configured on management0/0 e the ASA are connected with a back-to-back direct cable.
ASA has an interface in access mode inside with standby ip address and show failover is compliant with expected result in show failover (Normal)
ASA-PRIMARY# sh failover Failover On Failover unit PrimaryFailover LAN Interface: LANfailover Management0/0 (up)Unit Poll frequency 1 seconds, holdtime 15 secondsInterface Poll frequency 5 seconds, holdtime 25 secondsInterface Policy
[Code]....
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Mar 31, 2011
I currently have an ASA 5520 in production without using subinterfaces. I have connected an interface on the ASA to a 4507, the 4507 contains SVIwhich perform the routing for our internal network. I have another ASA 5520 and I am playing around with a few new design scenarios. The problem I am currently having is with SubInterfaces on the inside of the network. I understand the subinterfaces on the outside network, I am using subinterfaces on the outside for dual homing ISPs.
I don't understand the multiple subinterfaces on the inside, for some reason I can't wrap my mind around using them. I have created a few and trunked a port from my 3560X to the ASA interface. Here is my design.
ASA 5520 Config(I realize that this isn't how it would look in CLI, I just don't remember all of the commands)
interface Gi 0/1
nameif Physical Interface
no ip address
interface Gi 0/1.10
nameif Prod_USERS
ip address 172.16.10.1 255.255.255.0
security-level 100
interface Gi 0/1.20
nameif Users
ip address 10.10.16.1 255.255.255.0
security-level 100
Alright so in this scenario I would have a trunk port from my 3560X connected to interface Gi 0/1 on the ASA. On the 3560X I would created the two VLANs (vlan 10 and vlan 20); I also created an SVI on the 3560X as follows.
3560X config
interface VLAN 10
description PROD_USERS
ip address 172.16.10.2 255.255.255.0
no shut
interface VLAN 20
description USER-NET
ip address 10.10.16.2 255.255.255.0
no shut
Now I create a default route on the 3560X as follows, "ip route 0.0.0.0 0.0.0.0 172.16.10.1". By doing this, I can only route my 172.16.10.0 network out to the internet, not the 10.10.16.0 network? I have to remove the default route above and add ip route 0.0.0.0 0.0.0.0 10.10.16.0 for clients on that network to browse out to the web.
So I am obviously missing something crucial here and I just can't wrap my head around this design scenerio for some reason. the topology necessary for this configuration to function correctly and how I can get both of my VLANs to function properly. I would like for the 3560X to route traffic internally until traffic needs to browse into the DMZ or out to the web, and at such time it should then use the firewall.
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Aug 23, 2011
I've the following problem, configured dynamic user tracking on a WS-C4506-E with a WS-X45-SUP6L-E, System image file is a Version 12.2(53)SG2
Interface configuration:
snmp trap mac-notification change added
snmp trap mac-notification change removed
[Code].....
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Feb 19, 2012
how to use Subinterfaces on an Etherchannel for a Lan Failover link?I successfully bundled e0/0-1 and e0/2-3 to 2 Port-Channels with a 3750X Stack - and was able to set my "nameifs" and "security level" on Port-Channel Subinterfaces like "Port-channel1.4" As a lan based failover link the subinterfaces seem to be unusable ....
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May 29, 2011
I've been having a problem with my cisco routers (7600s) where sub-interfaces that we create for ldp tunnels are added automatically to the main ospf process as no passive when created. In order, here is how to reproduce the issue:
- Configure ospf process as "passive-interface default"
- Configure interfaces that have to be active as "no passive-interface blah"
- ospf works as expected.
- Create new sub- interface somewhere with encapsulation on a certain vlan for xconnect.
- New sub-interface gets added as "no passive-interface" in main ospf process.
- When adding a new port-channel interface, behavior is the same.
Is that normal for cisco, should I continue removing sub-interfaces manually every time from the ospf process?
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Mar 11, 2012
We have a pair of N7K distribution switches connected to a pair of N7K Aggregation switches.We run vPC on both pairs of n7k's.
-n7k-d1 has two interfaces in a Port-Channel connecting to n7k-a1 & n7k-a2. (PC1)
-n7k-d2 also has two interfaces in a Port-Channel connecting to n7k-a1 & n7k-a2. (PC2)
My problem is that Spanning-Tree is blocking PC2 and all traffic from n7k-d2 is traversing the Peer-Link before reaching the Aggregation layer. Is this the best design for connecting two pairs of n7k's with vPC or if a better design would be to connect all 4 links into the same Port-Channel and vPC?
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Sep 13, 2012
Why Cisco implements so much switching capacity in their switches Obviously,16 Gbps of permutation performance is too much for the 8,8 Gbits (24*200+2*2000) needed by ports so why they put so many bandwidth?
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Aug 5, 2012
I'm trying to configure intervlan routing between a cisco 2801 router and HP/Amer switches. Using int fa0/1 and subinterfaces I was sure I had it configured correctly, but I cannot ping the default gateways when I place a host in a particular vlan. Below is what I have configured.
HP switch - port 9 connects to fa0/1 on 2801
ip default-gateway 10.1.100.1
trunk 9 Trk1 trunk
trunk 10 Trk2 trunk - to another switch
[code].....
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Nov 21, 2012
I am using a 3750 as a default gateway for multiple Vlans on a few 2960 switches. The trunk lines are configured and working and I have assigned ip addresses to each of the Vlan interfaces on the 3750. My issue is that I can only ping the ip address on the Vlan interface of the 3750 if I have a working computer plugged directly into the Vlan on the 3750. I only have 3 vlans on the 3750 that have hosts directly connected (vlans 2, 10 and 40) the other vlans ( 20 and 70) don't have any clients plugged into them on the 3750 but the hosts reside on 2 different 2960s that connect via trunk ports. How do I keep the vlan interface on the 3750 switch pingable when I don't have hosts directly connected in that vlan on the 3750? (yes, I have enabled ip routing on the 3750)
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Oct 17, 2011
I have a simple design with 3750. I configured a route-map which define a next hop. I defined this route-map on a policy on a vlan interface.When I test some ping and a debug ip policy and it seems that my policy never match.Is there any mechanism that prevent the switch from using PBR? I think of CEF .
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Sep 5, 2012
I have a simple design with 3750.I configured a route-map which define a next hop.I defined this route-map on a policy on a vlan interface.When I test some ping and a debug ip policy and it seems that my policy never match.Is there any mechanism that prevent the switch from using PBR?
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Apr 11, 2012
Is L3 ip routing on by default in 3550s? If so is the "ip routing" command visible in the config file? If no - I assume that one would enable L3 routing with that config command.In general terms are there any IOS devices where ip routing is enabled and one would not see the "ip routing" command in config. I.E. if that command is not visible in the config could you assume there is no L3 capablity in that device?
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Aug 31, 2012
CiscoSwitch1(4506) has 3 VLANs(12,13,14) and Switch2(4948) has 3 different VLANs(22,23,24) and IP routing has been enabled in both switches with SVI interfaces for each vlan. intervlan routing is works fine.Now there is a requirement to connect these switches together. Vlan 12 on the Cisco switch 4506 has to be made available from vlan 22 from Switch2(4948). basically Vlan 12 is having a multicast source (225.0.0.0 & 226.0.0.0) which should be accessabile from vlan 22 of cisco switch 4948.I got 2 ideas
1) Create a trunk between these switches and configure L2 vlan(12) in cisco 4948...i know theoritically it should work but what my concern is Ip routing enabled in both switches will it create any issues? is it a gud solution to this requirement?
2) Create a separate IP network on the ports connecting to both switches and set up routes to the networks.ex- console(config)#ip route 192.168.10.10 255.255.255.0 192.168.20.1.
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Jan 4, 2012
Is it possible to view extensive information about switch supervisor on WS-C4506 platform? I could use show module or show inventory, but this only displays the module name. For example how to view the amount of SRAM the SUP has? Or any other similar more detailed information?
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Jan 21, 2013
I have a small campus network using 3750 stackable switches and a 3725 router (see diagram below). Currently the 3725 router is handling inter-vlan routing for the campus and it looks like it's not able to handle the amount of traffic we're pushing. The router CPU sometimes hits above 90% due traffic load. What I would like to accomplish is move L3 process over to the 3750 MDF stack and the IDF1 stack. I am thinking creating SVI's on both MDF stack and IDF1 stack, run HSRP between the two stacks and may be do load balance traffic between the two stack as well.
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Jun 18, 2012
I have two C2960 switches which have the management VLAN for other switches. These two switches are connected with each other via portchannel. Now the mgmt0 of few switches is connected to switch 1 and few other connect to switch 2.I have also connected the mgmt0 of switch 1 to an access port of switch 2 and vice versa.However in this set-up I am unable to reach switch1 via the mgmt0 IP address. However I can reach the mgmt0 Ip address of switch 2.I can also reach switch 1 and 2 via their int vlan IP.Has some one else experienced this and is their any specific reason why mgmt 0 IP address of switch 1 is not reachable.I have tried doing similar set-up on C3750, but have acheived same result i.e. I am unable to reach mgmt0 of switch 1.
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Nov 30, 2011
We are seeing the cpu on 2 of our C500 switches running at 99% with the following process causing the issue,.
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