Cisco Switching/Routing :: 881 Blocking Peer To Peer Applications On LAN
Feb 13, 2013I am facing issues in blocking Peer to Peer applications in LAN. I am using 881 Cisco router and below is the config done. [code]
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Jan 2, 2013We recently had a pair of Nexus 5k switches setup in our network. We had professional services handle the initial configuration but they weren't able to setup config sync for us. Each Fex is connected to each 5k, so we need a switch-profile to maintain a consistent setup on our interfaces. I went through the process in Configuring Switch-Profiles, but when I check the status of the peer, it says not reachable. [code]
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Aug 7, 2012I'm trying to create a vpc between a Nexus 5010 and Nexus 5020 switch. I recently upgraded the software so they are running the same version. I connect get a vpc link. Is there something wrong with my setup? Is a vpc between a 5010 and 5020 even possible? They are connected using a pair of Intel X520's in 802.3AD teaming mode. [code]
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Apr 19, 2013I have a pair of Nexus 5548UPs that have some high priority servers running on them. Servers are ESX hosts running Nexus 1000v's. Each host has multple connections in a VPC to both 5548s. We have been having intermittant ping loss and slowness of traffic to the VM's on these hosts. I was poking around trying to figure out what the issue could be and found that the peer-keepalive command was not set to send the heart beat across the mgmt0 interface. I would like to change this to point it accross the mgmt0 interface. Any tips or advice for me on making this change with production servers running on the switches? I do not want to cause any loss to any systems when I make this change. [Code] ..........
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Apr 26, 2012Trying to get the peer links to work and have them in interfaces E1/1-4 . When i do a show int status it looks like this and says sfp invalid. I see this on both sides. These same model gbics work fine attached to a FEX on these boxes.
Eth1/1 vpc peer link to T sfpInvali trunk full 10G Fabric Exte
Eth1/2 vpc peer link to T sfpInvali trunk full 10G Fabric Exte
Eth1/3 vpc peer link to T sfpInvali trunk full 10G Fabric Exte
Eth1/4 vpc peer link to T sfpInvali trunk full 10G Fabric Exte
Gbic in ports are this.
Ethernet1/1-4
transceiver is present
type is Fabric Extender Transceiver
name is CISCO-FINISAR
part number is FTLX8570D3BCL-C1
[code]....
Cisco Switching/Routing :: Nexus 5ks Connected To 6513s - Peer Link Active?
Mar 13, 2013 how the Nexus 5500s work ?currently we have two 6513 Core switches 6513-1 and 6513-2 running HSRP and RSTP. 6513-1 is currently the Root Bridge, 6513-2 is setup as our secondary root. We also have two 5548UPs setup with a peerlink between them. Picture attached. "Current Setup.jpg"
There is a 20gig port channel between the 6513s and also a 20gig port channel(peer link) between the 5548s. 5548-1 has a 10g fiber running back to 6513-1 and 5548-2 has a 10g fiber running back to 6513-2. Currently now Spanning tree is blocking the link from 6513-2 going to 5548-2 which is what we expect. We were working on moving some things to different racks the other day and moved switch 5548-2 to another rack and brought it back online without the peerlink fiber connected. We started to have issues and tried to plug the peer link back up, but still continued to have issues. We started to troubleshoot and noticed that both 5548s were acting like the master of the VPC domain and was not letting traffic pass accross the Peer Link. We then rebooted the 5548-2 with the thought that it would come back up as the secondary in the VPC domain. When it finally finished booting back up it then caused a huge loop in our network accross both uplinks to the 6513s and the 5548s peer link which in turn took our network down. Spanning tree did not work like it was suppose to and block the port going from 6513-2 to 5548-2 in time.
My thought was this didn't seem like a good setup. I went to the drawing board and decided we needed to have an uplink from both 5548-1 and 5548-2 going to 6513-1 setup as a port channel/VPC and also a uplink from 5548-1 and 5548-2 going to 6513-2 setup as a port channel/VPC. Picture Attached. "NewSetup.jpg" We are also planning on buying a "2K-C2224TP-1GE" to hang off the 5548s to use for ethernet.
how the Nexus 5ks work and haven't done a lot of research on them. Would this not be a better setup since both switches will have an active link to the root bridge? The links from the 5548s going to 6513-2 should always be in a block state until we loose both uplinks to 6513-1 or the entire switch itself correct? Also how will the 5548s reactive if I was to loose the Peer link fiber? Will they continue to work as normal? When it looses this Peer Link does it suspend all the VPCs for the servers on the secondary switch in the Domain so the network doesn't get confused on which link to send traffic up since there isn't a peer link active or is this not the case? Also with the peer link down will the 6513-1 know which 5548 to send the traffic to if there is only 1 device (not setup in a VPC) on one of the 5548s? What are your recommendations/best practice on the setup for the 2k?
Cisco Switching/Routing :: 5596 VLAN Traffic Span Across Vpc Peer-link
Apr 22, 2013I have pair of 5596 switches in vPC. One host say "HOST A" is connected to the primary vPC peer and other "HOST B" on secondary vPC peer.Both are in same VLAN 10. Both hosts are vpc orphan ports as their NIC is configured in active/standby mode.I have configured span session on both vPC peers with span source as VLAN 10 in rx mode.Span destination is connected to secondary vPC peer. The issue here is that I am not able to capture the traffic originating from HOST A destined to HOST B which is traversing vPC peer-link.Same issue occurs for the traffic in reverse way and span destination on primary vPC peer. In a nutshell, any traffic which crosses vPC peer-link is not getting captured.
What could be the issue and is there any solution for it. Below mentioned is the span config and relevant interfaces. [code]
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Mar 25, 2012I have an environment where i have two nexus 7010 switches, along with 2 nexus 5510's. I need to run OSPF as a layer 3 routing protocol between the vpc peer links. I have 1 link being used as a keep alive link, and 3 other links being used as a VpC link.
1) Is it best to configure a separate Vpc VLAN i.e 1010
2) Is it best to configure a vrf context keep-alive
3) just have the management address as the peer ip's.
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[URL]
The only scenario I see which could break is if both peers try to establish a VPN at the same time to the ASA. Is there any other reason ?
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