Cisco Switching/Routing :: 6500 - Link State Propagation
Aug 7, 2011
I have two Cisco 6500 switches connected via fiber, this is my small network. One end goes to a provider, and the other end goes to a server. My IT department wants some sort of link state propagation since the provider keeps going down, but the IT team is unaware until they contact me.
We provide a Layer2 point-to-point circuit, access ports at the ends. We use V LAN's to transport the traffic. Please let me know if there is anything I could do to support link state propagation.
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Dec 9, 2012
We have a pair of 6500 switches, each having a trunk going to each access switch. We set the spanning tree priority on Core1 so it is the root bridge for all VLANs. We have two different types of access switches:
-3550 setup as VTP client and ISL
-2960 setup as VTP transparent and dot1q.
Pruning is disabled but we use "switchport trunk allowed vlan" to restrict which VLANs go through each trunk. When we need to permit a VLAN through a trunk, we simply run "switchport trunk allowed vlan add <VLANID>" on the access switch and both core switches. If it is a 2960 in VTP transparent mode, we must set the VLAN to active. Once this is done, a "show int trunk" will reflect the new VLAN in "Vlans in spanning tree forwarding state and not pruned" for Core1.
I recently went through this process to add VLAN 250 on a 3550 access switch, but the VLAN is not listed in STP forwarding state and not pruned. I tried removing the VLAN from the trunks and redoing it, but there is was no change. I tried adding VLAN 257, but the same behavior happened. I then tried trunking the same VLANs to a few other access switches. Three other 3550s experienced the same behavior, but I was able to trunk the VLAN to a few 2960 switches. At this point, I figured it might be related to some kind of limitation of VTP or the 3550 switches. I provisioned a new 3550 with the same IOS and settings (VTP client, ISL). To my surprise, all VLANs configured were in STP forwarding state and not pruned.
Running show spanning-tree on the core and access switch shows VLAN 250 as designated FWD. I confirmed we are not hitting the limits in "show spanning tree summary totals" on the Core or Access switches. I also confirmed we are not hitting the virtual port limit by running "show vlan virtual-port slot x."My next action might be to shut/no shut the uplink to Core1 from the access switch, but I'm not sure if that will fix it and even if it does, I have no clue what caused the issue.
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Jan 24, 2012
I have catalyst 6500s with two VS-S720-10Gs, one is in Active and one is in Hot state. Both Sup cards have two 10G uplink ports. How does the traffic forwarding works in this case on the uplink ports? Do these uplink ports actively forward traffic or it is only the uplinks ports on Active that forward traffic? I see CDP neighbors on both Active and Hot SUPs uplinks ports - it indicates that packets are flowing on both cards.
I want all uplink ports on both SUPs to actively forward traffic. Does it work? What is the config for this?
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Mar 28, 2013
I'm trying to get clients to pick up a DHCP address from my server. Physical config is as follows:
4-switch stack of 3750X-48P-S (x 2) and 3750X-24S-S (x 2). 48's are physical switch 1 & 2. Data stack is working fine. That's the Core Switch
Mix of 2960S-48TS-L and -24TS-L, 2960CG-8TC-L and 3560CG-8PC-S Access switches.
physical switch 1 in Core Switch, all ports are VLAN 4. No DHCP required - VLAN 4 is infrastructure only. All switches have:
Switch#(config)int vlan 4
Switch#(config-if)ip address 10.0.4.x 255.255.252.0 (Core switch is 10.0.4.10)
Switch#ip default-gateway 10.0.4.10
Physical switch 2 in Core Switch, all ports are VLAN 8 (client access, main corporate office site)
Physical switch 3&4 in Core Switch, all ports (SFP) are trunk
[Code] .....
So in that slightly spooky, obscure way that they have, the clients ought to be picking up a DHCP address from the relevant VLAN, depending on which VLAN the access port they're connected to is in. But they don't pick up anything. Connectivity is there - everything can ping everything, including clients if I set static IPs, and including DHCP server.
Should ip helper-addresses be set on the access switch VLAN interfaces too? Or have I missed something else obvious/critical? I need to have this out and on the ground and tested within 3 weeks - this is the first hurdle and I've fallen over. Like I said at the beginning, this config (or the equivalent) works fine on Packet Tracer for distributing IP addresses.
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Apr 12, 2012
I'm having big problems with the 'ip default-network' command. [URL] I build the topology shown in the above link and it works well. Then I deleted the static route on router 2513 and removed the 'ip default-network' command. I configured RIP on all routers and issued the 'ip default-network 198.10.1.0' command on the upper right router. After that the default route is installed on the 2513 router.But when I configure EIGRP instead of RIP, the default route on 2513 is not installed:
Gateway of last resort is not set
131.108.0.0/16 is variably subnetted, 2 subnets, 2 masks
C 131.108.99.0/24 is directly connected, FastEthernet1/1
L 131.108.99.1/32 is directly connected, FastEthernet1/1
161.44.0.0/16 is variably subnetted, 2 subnets, 2 masks
[code]....
Network 198.10.1.0/24 is flagged as default network. I would expect the router to install a default route now but it does not. Experts are recommending to not use the 'ip default-network' command. But it is included in the Route exam so I try to understand it.
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Dec 6, 2012
i have server with two uplink to pair of 6500 non-VSS, this server member of vlan 100 sw-1 is active HSRP while sw2 is a standby HSRP , how can i make this server forward traffic on both Link . the server admin told me only one link is active (green) on the server while the other link is orange
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Oct 9, 2012
Four 6500 connected to each other to form a full mesh. Switches 4 and 7 is running eigrp. A question came up, why didnt it have eigrp on SW 2 & 3 ? Will it still be redundant if link between SW3 and SW4 is removed? If redundancy is working, SW3 should be able to find its way to SW4 via SW7 or SW2, yes?
The config looks:
SW4 eigrp
router eigrp 100
network 192.168.0.0
redistribute static
auto-summary
[Code]....
Recently, the eigrp was configured to SW 2 and SW 3 as well, it included the “redistribute static” statement. The route for SW2 and SW3 now has the VLANs, 51 or so. Sent ping from a PC to VLAN1 IP of SW3, then link between SW3 and SW4 was disconnected, network connectivity went down for about 20secs, and ping came right back. Thought it was a success. All of a sudden, outside connectivity was lost. Ping within the LAN was successful, but no internet connection.
The eigrp on SW2 and SW3 was removed, and the internet connection came back up. The initial concern was that although there is physical redundancy in place, the other routes may not be known. Hence, eigrp configuration has been attempted for SW2 and SW3. Perhaps the “redistribute static” should have never been configured on SW2 and SW3, SW7 does not have the “redistribute static” statement anyway.
Without eigrp running on SW2 and SW3, does it still have redundancy? For what it’s worth, SW4 and SW7 are both VTP servers. With the current configs, does it still have redundancy? Link redundancy was never tested; it always has been assumed that it works. Later today, with it’s current config, the link redundancy will be tested.
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Oct 23, 2012
I would like to request assistance from all the gurus here for an issue i have with a Cisco 7513MX PSU. There probably arent many people who are aware of 7500 chassis as they are quite old.Isse: PSU 1 failed in chassis and we tried to replace it. Once replaced, we are getting the following output for it:
1#sh env all
Arbiter type 2, backplane type 7513MX (id 2)
Power supply #1 is TBD (id 0), Power supply #2 is 1200W AC (id 1)
We have been researching on the internet for answers but unfortunately due to the age of this model, there is very limited information available. We did find information which suggested to have BOTH PSU 1 & 2 with same revision. Right now the chassis is running only on PS2, we dont want to take down the chassis just to confirm the revision number on the PSU and there is no way to see that on the CLI. What we can do is get another pair of same revision PSUs, insert PSU1 first THEN take out PSU2 and then insert the same revision as PS1 in PSU2 slot but the moment we insert PSU1 in we get that TBD state which is not normal status and raises our doubts about putting the same revision PSUs with the method above, there is a chance that after we insert PSU1 in, the moment we take out PSU2, the chassis might not run on PSU1 due to its abnormal state.
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Jan 2, 2012
I need to implement the shaping VLAN only on the trunk link between the 6500 and 3560. [code]
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Jul 12, 2012
We did an upgrade from NX-OS 5.1.5 to 5.2.4 and found all M1 line card interfaces were stuck in initializing state for long time.'show module' status says ok. And we cannot execute shut/no shut command under the interface. N7K-M108X2-12L & N7K-M148GT-11 are the two M series cards. Only option was to downgrade back for the time being.
N7K01# sh int e1/1 | in down
Ethernet1/1 is down (initializing)
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Dec 21, 2011
how can we upgrade 6500 non modular ios to normal 6500 ios?
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Apr 18, 2012
indicate why my ethernet ports are in suspended state for some reason, i need an indication why this may be and what i can do to fix this issue. configuration below. I have a 7010 which i'm using to connect to two 5510's. I have one vPC connecting the two 5510's to the 7010. I have a vPC domain configured between the 5510's. and no issues at all. My Nexus 7010 port channel members are suspended for some reason.
Nexus 7010
vpc domain 100
role priority 100
peer-keepalive destination 192.168.1.2 source 192.168.1.1 vrf vpc-keepalive
!
interface Ethernet 3/1
[code]....
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Jan 25, 2012
I am testing 2960 24 S with storm-control and Errdisable Port timer interval 60s , connected HUB on fa0/17 to make traffic / loop.After Strom Control detection the interface goes down thats ok after 60s they will try to recover the interface and going up although the loop is still there.For my understanding if the interface detect still a loop on that interface they will disable the port again for 60s and will check again. [code]
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Jun 29, 2012
We have a number of 3750 stacks used as access layer switches connecting Siemens VOIP phones and then a PC that connects to the phone.
For example if I plug PC A to the phone that connects to port 13 I pick up an IP addressand all works as predicted now if I plug in PC A to any other VOIP phone that connect to another port on the same switch it goes in error disable state ITs like the switch is holding my PC mac address and locks it down with the port which in my case is Gi2/0/13.
interface GigabitEthernet2/0/13
switchport access vlan 726
switchport mode access
[Code].....
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Mar 30, 2013
I am cascading one new switch 3750G (int Gi1/0/1) with an existing 3750G (int fa1/0/26) switch.. But the interface fa1/0/26 goes in err-disable state even after NO SH.. also i have diable Spanning treebpdu guard and disable spanning tree portfast. But still the issue is not resolved.
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May 18, 2010
We inserted a new module with 48 rj45 ports in a 4500 with just one supervisor module. We have two 4500, and we tried the new model in the other 4500 and it´s working properly and giving a OK status. Furthermore, the module´s LED status is green. We saw that there are 8 ports (from 17 to 24) that are in faulty state, so probably this is the cause for the faulty state for the module.
We tried already a Hw reset, replace/insert again the module...
We are almost sure that it can be a Hw failure. We are getting the following results different commands:
show module :
Mod Ports Card Type Model Serial No.
7 48 10/100/1000BaseT (RJ45) WS-X4548-GB-RJ45 JAXXXXXXXH
M MAC addresses Hw Fw Sw Status
[Code].....
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Apr 7, 2012
After a power problem at our data centre we find Module 11 of our Cisco 6513 Core Switch in PWR Down state.Show Module 11 returns: Status: PWRDownShow Power Status Module 11 returns: OperStatus Off (Module Reset due to an exception or user request).The command:
Power enable Module 11 was issued and returned the following: %PM_SCP-SP-1-LCP_FW_ERR: System resetting module 11 to recover from error: Linecard received system exception. Errcode = 2509000001.%OIR-SP-3-PWRCYCLE: Card in module 11 is being powercycled Öff (Module reset due to exception or user request%C6KPWR-SP-4-DISABLED: Power to module in slot 11 set off (Module Reset due to exception or user request),We have restarted the switch twice. The module is currently not passing traffic causing downtime to services.
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Mar 28, 2012
I have a Catalyst 2950G when I activate the switchport port-security, but I want to empty the black list of mac address because every time I connect a device, the port is automatically désacative, here is the port configuration:
!
interface FastEthernet0 / 2
switchport access vlan 17
switchport mode access
switchport voice vlan 51
[code]....
I tried the following commands to clear the blacklist mac address of that port, but the problem is still relevant:
# Clear mac-address-table dynamic int fa0 / 2
# clear port-security all int fastethernet 0/2
# clear errdisable interface fa0 / 2 vlan
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Mar 9, 2012
Recently on two switches, both being same cisco WS-C3750E-24PD, running with same IOS c3750e-universalk9-mz.122-58.SE2.bin got noticed that the license state of one switch is showing incorrectly as shown below [code] I will not be able to execute any changes/modifications on switch as of now.
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Jun 3, 2013
I have configured a SVI in my 4500 ( Sup 7-E 10GE,,,,,,and,,,,,cat4500e-universalk9.SPA.03.02.00.SG.150-2.SG.bin) switch and it is showing Down Down, because there were no active switch port in the vlan, I added one switch port to this vlan but this port also in the down state, so i added the SWITCH PORT AUTO STATE EXCLUDE command under this port, even after this also the SVI never came up, So i added one systen to the port so both the switch port and the SVI came up...So why SWITCH PORT AUTO STATE EXCLUDE command have no effect in this model of the switch..
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Jun 29, 2011
Running ASA5585’s in active/standby across a local campus MPLS network. Supported design, leading practice etc. Specifically our design is that two ASA5585 are configured as active/standby through a local campus MPLS network over 10gig links through ASR9k etc. The ASA’s are providing inter-vrf routing capability only with p2p l2vpn circuits configured for each logical interface between the ASA over MPLS etc.The failover link is via a direct fibre and the state link will be through a p2p l2vpn (option for direct fibre also)Is this a supported design to begin with?
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Jan 21, 2012
As per my understanding 6509 all slots are dual channel, so 9 slot * 40 per slot (20 g in and 20 g out) = 360 GB How cisco claim the 720 ?? What about the 6513 chassic switch fabric connection?
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Sep 20, 2012
I am seeing a strange situation on my 6500 switch?By having snmp walk on '1.3.6.1.4.1.9.9.109.1.1.1.1.3' (== cpmCPUTotal5sec), I came to know that there are two processor and the cpu util for switching processor is gone to 88 % and some time creeps to 99 %.
snmpwalk -v2c -c "removes" sw6500 '1.3.6.1.4.1.9.9.109.1.1.1.1.3'
SNMPv2-SMI::enterprises.9.9.109.1.1.1.1.3.1 = Gauge32: 12 (--- this is for CPU of Router Processor )
SNMPv2-SMI::enterprises.9.9.109.1.1.1.1.3.3 = Gauge32: 99 (--- this is for CPU of Switching Processor )
but when I do sh process cpu on the console, all looks normal as it shows cpu utilization of RP. why the value is so high on the switching processor ?
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Jan 24, 2013
For intervlan routing, Is 'IP routing' command enabled by default on a 6500 series switches based on the IOS?and on 3750 switches, do we need to enable the "ip routing" command manually for intervlan routing?
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May 9, 2013
I'm looking to restrict Inter-VLAN routing through L3 switch (cisco 6500) and wanted to know best possible way to do it. I used VACL and achieved success to some extent, but my config is making clients take up to 5-6 mins to authenticate IP address from the DNS (bootps).My VACL config was as follows:
Subnet to restrict is 10.100.15.0 (VLAN 15)
STEP 1: Created extended ACL to allow bootpc/bootps through DNS
ip access-list extended EACL_DNS
permit udp any eq bootps any
permit udp any eq bootpc any
STEP 2: Created standard ACLs to allow only relevant subnet, server VLANs & some IPs from other subnets for printers/scanners etc.
ip access-list standard SACL_VLAN_15
permit 10.100.15.0 0.0.0.255 (the subnet I'm restricting)
permit 10.100.50.0 0.0.0.255 (server VLANs)
permit 10.100.25.45 0.0.0.0 (printer in another VLAN which has to have access in VLAN 15)
STEP 3: Created VLAN access list
vlan access-map VACL_15 10
match ip address EACL_DNS
action forward
vlan access-map VACL_15 20
match ip address SACL_15
action forward
STEP 4: Applying VLAN Access list on VLAN 15 vlan filter VACL_15 vlan-list 15 Though the above works, below is noted:
1. I'm still able to PING 10.100.15.2 (the switch virtual interface) from outside the subnet, which I don't intend to do so. Howeve all cients in the subnet have no connectivity from outside the VLAN 15.
2. As mentioned its taking quiet some time to negotiate with the DNS server at system boot time.
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Jun 2, 2012
I used to "ip routing" command in order to enable inter-vlan routing, for example with 3750 cisco. I have a 6503 cisco with SUP720 MSFC3. I was able to create some vlans but I can not configure inter-vlan routing.
sw#conf t
Enter configuration commands, one per line. End with CNTL/Z.
swsur(config)#ip routing
[Code]....
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Oct 30, 2011
For intervlan routing, Is 'IP routing' command enabled by default on a 6500 series switches based on the IOS?hes, do we need to enable the "ip routing" command manually for intervlan routing?
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Mar 16, 2013
Where is the "ip routing" command in Cisco switch 6500 series?
is the ip routing enable by default accoridng to the: [URL]
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Oct 16, 2012
Cisco device is neighbored up with a Brocade device via OSPF, and the desired routes are present.This Brocade device is neighbored up with another Brocade device via OSPF over a GRE tunnel. I am not seeing the desired routes present.What kinds of things can I look at to determine the issue? I think I've viewed the OSPF topology database (I'm not that familiar with Brocade) with the show ip ospf routes command and I'm not seeing the desired routes there either.There is no form of route filtering in place. I'll double check, but I do not believe there is any stub routing going on either.
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May 2, 2011
When using CSMA/CD what is the maximum number of end-to-end propagation delays that could elapse from the time a sender starts its transmission until:the collision is detected? the frame it is sending has a collision?
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Nov 25, 2011
i would like to check out what's the difference between the naming convnetion for the 6500 IOS.
I read the data sheet to support my POC deployment to support NCS v.1 the 6500 IOS need to upgrade to 12.2 (33) SXI
Is it able to work if i using SXJ instead of SXI, with the same IOS version 12.2 (33)?
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Jul 24, 2012
I have tried to test copy tftp: numerous time with no success. I believe the reason it is failing is my laptop to Ethernet port is in vlan 62 and the tftp process operates in a different IP space.I am using gig 7/1 and configuring my laptop nic for x.x.x.254 mask 255.255.255.0. I can ping from laptop to gateway) and I can ping from the switch to my laptop using ping vrf production x.x.x.254. Can you tell me what vlan I need to set my laptop connection in or if there is something else I need to change to make tftp work on vlan62?Does TFTP only work in vlan1 or can it be changed?
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Mar 25, 2012
how to upgrade IOS in switch 6500 connect in VSS from 12.2(33)SXI IOS to 12.2(33)SXJ?
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