15

The distance of the fibre isn't a good indication of whether you'll be able to run a specific optic/speed across it. You need the path loss (measured in dB), which can vary greatly between links of the same distance (due to number of splices, fibre quality etc.) Also, the distance of the fibre in the ground is usually about 25-30% longer than the path it ...


12

It sounds like you're talking about the WS-X6716-10GE. Over-subscription in this context means you have a 16 x 10GE ports on the front of the LC and no more than 4x10GE at the fabric connection to the rest of the chassis. Over-subscription will not matter if you locally switch traffic within the same linecard; however, you will only be able to send up to ...


12

... Today we spotted a peak of CPU usage for a Switching Processor. The peak can be correlated with a peak of inbound unicast on a port named "NDE_vlan1014" ... So the question is : what is this "NDE_vlan" interface ? NDE_vlan is one of the Catalyst 6500's hidden vlans. The 6500 allocates internal vlans for a lot of different functions, and those ...


11

I'm wondering why packets don't enter in the queue at all before being dropped. Because they were errors: 8097 input errors, 7120 CRC, 894 frame It will not queue a packet that wasn't received properly -- or wasn't received completely (input queue is in software, you can still overrun the hardware queue, which you cannot change)


8

such as q-in-q tag termination. This is going to depend on the line cards you have. I need certain router features If you have other that you need, elaborating on which would be good. Cisco has specific builds of the 7600 software that runs on 6500 chassis, but they are only generally available to customers who have been burned by the 6500/7600 BU ...


8

There are several interface counters that don't work as well as they used to. Sometimes this is because the chassis/router has a 'fast' switching mode (CEF, or something else), and that particular 'bucket' never gets hit. Another reason might be that that particular counter only works in L3 mode instead of L2 mode. This kind of stuff is quite common, ...


8

If it's like most of the hardware switches, no. Only one "monitor session" can be active at a time, 'tho the configuration can store two. Using vlans and external filtering hardware (gigamon?) you could have one session dumping all the traffic you want to see, but that's still one session. (and a network tap would be cheaper)


7

Background I am somewhere that blocks Dropbox downloads, so I can't see the captured traffic, but I'll go on the assumption these were 64-byte ethernet multicasts. Let's do some math to see how much traffic you're permitting... A 64-byte frame is 672 bits (including 8 bytes for Preamble/SFD, and 12 bytes for IFG)... 8*(8 + 12 + 64) = 672 bits That means line ...


7

If all traffic needs to go from gi0/4 to gi0/3 and from gi0/2 to gi0/1 you could use layer 2 local switching. Configuration would be about: connect Router1-TM GigabitEthernet0/4 GigabitEthernet0/3 connect Router2-TM GigabitEthernet0/1 GigabitEthernet0/2 If your linecards do not support layer 2 local connect, then consider bridge-groups: bridge irb ...


7

I would take a look at this support document from Cisco. In part it recommends to run the following command to see which OID's were recently polled: show snmp stats oid This gives a readout for which OID's you are polling. It will allow you to see, by judging the time stamps, which OID is taking a long time to poll. This is usually where your problem ...


6

Unfortunately no. Anue Systems makes a very slick solution which allows you to pass in all your span or tap traffic and then "switch" that traffic based on your rules to your various tools that would typically utilize a span port. I'm sure there are other vendors that provide a similar solution but I was impressed by this particular one.


6

as @dfex said you really need to measure the true attenuation before proceeding. There are special transceivers that have FEC and claim to achieve extended reach (for example from Menara Networks). However I would probably go with traditional amplification and with some small DWDM system.


6

does PBR add any latency over doing SNAT assuming PBR is all done in hardware? Sup720 supports PBR in HW, the additional latency (if any) is negligible because PBR doesn't add more interface queueing. I think PBR would make things harder than they need to be (and I'm still not even sure whether it would work... the specifics of that option aren't totally ...


6

SSH on the 6500 series is a software feature, so the best thing to do is use the Cisco Feature Navigator to select a software image with SSH support and install that.


5

MUX-UNI support: It looks like you're trying to configure a MUX-UNI with: A Layer3 interface on Vlan 556 A Vlan-mode PW on Vlan 920 The WS-X6516A is considered a Catalyst 6500 / Cisco 7600 LAN Card; LAN cards have some feature restrictions... one of the restrictions is how you configure a Layer3 interface on a LAN card with dot1q encapsulation. When you'...


5

I would like to have the IOS: c7600s72033-advipservicesk9-mz.122-33.SRE1.bin running on the 7609 router. Is this IOS compatible with 6509, so I can update the IOS on the 6509 and then move the SUP? You're speaking about a subject which is very confusing, and I apologize. For years, you could mostly get away with saying the biggest difference between a ...


5

6500 is generally MPLS ready in terms of label support, LDP support and things like VRFs for MPLS VPNs. Some features may be missing because of specific choice of software and hardware. For example, in your configuration, you'll have very small FIB for services - you have only PFC3B which can hold 256k IPv4 prefixes, or 128k IPv6 prefixes, or half of that ...


5

It depends on the specific line card. Some line cards have more intelligence and features than other line cards. With the line cards that support CEF on the card, you can enable distributed CEF. IP Switching Cisco Express Forwarding Configuration Guide When to Enable or Disable Central CEF on a Router Enable central Cisco Express Forwarding ...


4

Most switch traffic is now processed entirely in hardware (i.e. the ASICs) as this is the fastest/best way to do so. The last input and output fields are only updated when there is traffic that is software or process switched. On some platforms there are features that you can enable that will cause traffic to be processed in software, which will decrease ...


4

On the Cisco 6500/7600 Platform, you have two additional mirroring options that can be used along with, or to replace SPAN. The advantage of these two alternate methods is that the mirroring is performed in hardware (ASIC) so it does not impact the CPU like SPAN does. The downside to these mirroring techniques is they can only mirror inbound on the ...


4

Not with a 4948-10GE I'm afraid. X2 transceivers can only go up to 10GB-ZR which will get you ~80km. Edit: dfex is right on the money as well - you'll need to get the path loss from your provider before you can make an informed decision on this. 2nd edit/suggestion - if the path loss still prohibits you from off-the-shelf optics, maybe ask your provider if ...


4

At what point do you push Cisco for hardware or RAM replacement? Whenever you feel like you can't afford the risk of the HW being bad. Single-bit parity errors happen because Cisco used non-ECC memory in some components of the Supervisor. As long as an occasional 3-second SSO failover is tolerable, just roll with Cisco's recommendation, because solar ...


4

CRC errors tend to indicate a problem with the signal as it crosses the medium between devices. Where 1G was often much more resilient to minor issues, 10G can be very particular about the medium. For copper connections, this could indicate some sort of interference bleeding into the wire if you are not using shielded cable, or a problem with ground in ...


4

I see this in your output: 8097 input errors, 7120 CRC, 894 frame, 0 overrun, 0 ignored ^^^^ ^^^^ ^^^ This means you could have a faulty network interface card (NIC), cable, or driver.


4

A line card swap is exceedingly simple. You'll need to make sure that the replacement card is the exact same model as the old one. You can certainly bring TAC on the call with you to do the swap if you want help. the configuration is saved in the running-config/startup-config, and will be applied to the new line card after your insert it and it boots up ...


4

I don't think there are any 10G linecards/modules for the CAT6500 that directly support SFP+ modules. WS-X6700 Series: https://www.cisco.com/c/en/us/products/collateral/switches/catalyst-6500-series-switches/product_data_sheet09186a00801dce34.html WS-X6800 Series: https://www.cisco.com/c/en/us/products/collateral/switches/catalyst-6500-series-switches/...


3

I have read that SIP-400 and SPA are compatible with 6509 series switch. These SIP and SPA are used to terminate PPP sessions on 7600 routers. If i installed this SIP and SPA (SPA-5X1GE-V2 for example) on my 6509 chassis, could i configure the switch to terminate PPPoE sessions? In that case, which IOS would support this feature? The switch has SUP720-...


3

In addition to @Mike's answer, the following Cisco webpages provide some context into the Cat65k fabric architecture: https://supportforums.cisco.com/docs/DOC-18210 http://www.cisco.com/en/US/prod/collateral/switches/ps5718/ps708/prod_white_paper0900aecd80673385.html


3

This documentation is a few years old but it does seem that only catch is that the links must be all set to the same speed.


3

Cisco Catalyst 6500 Series Supervisor Engine 2 / MSFC2 Latest CatOS ROMMON: 7.1.1 Latest IOS ROMMON: 12.2.17r(S5) Latest IOS: 12.2.18-SXF17b All require a valid smartnet contract to access. (even for EOL crap.)


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