0
votes
1answer
38 views

Seeing odd (to me) packets in a network capture

This morning I connected a system to our switch connected to our ISP handoff in order to do some wiresharking. I had yet to set up any port mirrors, and confirmed that there were none in place. ...
1
vote
1answer
816 views

ESXI 5.1 - Unable to trunk to cisco switch

I have configured my esxi host vSwitch1 to use the secondary NIC on my VMware host. On vSwitch1 configuration I have set the VLAN to 4095 which specifies to allow all VLANs. If my cisco switch port ...
1
vote
0answers
160 views

Cisco vlan entry missing in vlan.dat, but appears in running-config

One of our vlan's (ID: 104) stopped working suddenly and computers on that vlan failed when trying to obtain a dhcp ip address. On the Cisco switch if we do show vlan, this command is supposed to ...
6
votes
3answers
143 views

Cisco Dot1x Port Authentication - VLAN selected based on what domain the user logs on to on computer?

Currently my company has been bought out by another. Due to this, another two companies users will be migrating into our office. It would be super handy if we could have the vlan chosen for the user ...
0
votes
2answers
720 views

LACP Aggregation between Cisco C3750X and HP JD990A

The interface on the JD990A is very cut down. There is a serial console with minimal commands and a web interface. The 3750 is in a 2 switch stack and I am trying to configure cross-stack link ...
0
votes
1answer
128 views

Is Cisco Misquoting the Nexus 7000 specs [closed]

Looking at the following image: http://blogs.cisco.com/wp-content/uploads/7000-family-550x358.png Cisco is quoting the 7009 as having a 10GigE density of 336 and a backplane bandwidth of 550G/slot. ...
2
votes
1answer
161 views

Is a Fabric Module required for a Nexus 7009, or is it part of the Chassis?

I noticed that Cisco lists separate fabric modules for the Nexus 7009 switch. If I were to simply buy the Nexus 7009 Chassis (N7K-7009), what would I need at minimum? I just want to confirm, but I ...
0
votes
1answer
351 views

Cisco ASA 5505: switchport VLAN assignment

Kind of a Cisco Luddite, but I'd like to assign physical switchports 0/1 and 0/2 to Vlan2 and physical switchports 0/3 and 0/4 to Vlan3. I'm assuming this is possible with base security license, ...
4
votes
1answer
290 views

Should the MAC Tables on a switch Stack be the same between sessions?

According to Cisco's documentation: "The MAC address tables on all stack members are synchronized. At any given time, each stack member has the same copy of the address tables for each VLAN." ...
2
votes
2answers
478 views

Cisco Sticky Mac vs Juniper Persistant-Mac

I’m trying to figure out if there is an inherent flaw in the way JUNOS handles sticky-mac addresses across their switch-ports versus how Cisco handles them. I’ll elaborate. Below, you can see that ...
2
votes
1answer
795 views

Switch flooding when bonding interfaces in Linux

+--------+ | Host A | +----+---+ | eth0 (AA:AA:AA:AA:AA:AA) ...
1
vote
2answers
3k views

How to interconnect 2 switches (Cisco/Dell) with trunks

In order to migrate to a new rack inside the datacenter I have to replicate the VLAN setup between a Cisco Switch and a Dell PowerConnect Swithch. On the Dell Switch I have 2 VLANs : vlan 10 : WAN ...
2
votes
1answer
303 views

Interaction of devices with different VLAN configurations

I have an existing firewall+switching layer which is separated into per-client VLANs, with its own numbering strategy, etc. This layer is interconnected by trunk ports such that VLANs numbered on one ...
2
votes
1answer
563 views

Networking Cisco: adding 3750 Switch to existing Stack

Can any one advise about what will happen to my existing switch stack when adding an additional slave switch? I'm trying to confirm whether this will cause a temporary outage to my network or will ...
1
vote
0answers
389 views

HP ProCurve & Cisco switches interoperability

I have a couple of questions regarding Cisco and HP ProCurve interoperability. Here's a link to pdf with my network topology. Can someone help me with basic VLAN configuration in such topology? Below ...
1
vote
2answers
3k views

Vlan Management Policy Server ( VMPS) Configuration and Management

I am trying to design a topology in which I need to use VMPS and unfortunately the resources are rather few on the internet. Based on this Configuration document VMPS I have created a sample ...
0
votes
1answer
155 views

cisco 3825 to 3825 routing question

I have 2 cisco 3825 routers connected to two cisco 3560 switches. One is currently our main router with 3 /22 public addresses and the usual slew of rfc1918 address space routed around for internal ...
0
votes
1answer
849 views

Link Aggregation between DELL PC2724 and Cisco Catalyst 3750

I'm trying to configure Link Aggregation between my two switches, on the DELL switch, there is only an option to include a port in a "LAG Group." On the Cisco's I've tried creating an EtherChannel ...
5
votes
5answers
1k views

Mixing SAN iSCSI Traffic with core network traffic, Am I asking for trouble?

I am configuring a new network and had a couple questions I am finding hard to find good answers about best practices on using VLANs to separate Core network traffic and iSCSI traffic. The switches ...
1
vote
0answers
648 views

Max STP instances reached on Cisco 2950 despite not actively using 64

I have a Cisco 5505 switch running CatOS connected to a number of Cisco 2950 switches running IOS. The 5505 switch supports a large number of vlans (I'm guessing 1005), yet the 2950s only support a ...
2
votes
1answer
403 views

Connecting office to data center via Metro-ethernet

I am installing a metro ethernet link from my office to my data center. The office will have a cisco 3750 with several vlans. The data center end will have a more complicated set up. The metro e from ...
5
votes
5answers
3k views

Hubs/switches taking out switches?

Here's the issue...we have a network with a lot of Cisco switches. Someone plugged in a hub on the network, and then we started seeing "weird" behavior; errors in communication between clients and ...
3
votes
2answers
1k views

Basic Cisco Switch Recommendation For HSRP WAN Redundancy [closed]

I am going to have to use HSRP for WAN failover with my two routers since a routing protocol is not being offered. In order to make sure my active router doesn't get out of sync with their active ...