[c-nsp] 802.1q VLANs > 1000 on Cat 5500

[Rick Ernst]

Yup; I found that link (or one remarkably similar to it).  Landing the
higher VLAN IDs on the 5500 isn't going to work. We only have an immediate
need for two, but future requirements will be dozens or 100 or so.

My next idea/alternative is to land it on a 7500, but my current IOS has
the same VLAN limitation.  Also, some VLANs may be landed directly, and
other may effectively be out-of-band to other customers; not landing
directly on our infrastructure.

My current idea/hope is to find an external device that can do the VLAN
translation for me.

On Wed, 3 Aug 2005, Tim Stevenson wrote:

:>Sorry, I was not trying to imply that cat5k supports the 4k VLAN range; it
:>does not. I was just replying to clarify that it is both hardware and
:>software that dictates whether you get dot1q trunk encapsulation at all or not.
:>
:>Not sure how many external >1K vlans you need to deal with; 5k does support
:>a small (7 entries, global) translation table you can use to map dot1q
:>vlans to the 1-1000 range. Any frame received on a dot1q trunk with the
:>specified 1q vlan tag is translated to the specified "isl" vlan; on
:>transmit, the opposite occurs.
:>
:>http://www.cisco.com/univercd/cc/td/doc/product/lan/cat5000/rel_6_3/config/vlans.htm#1020383
:>
:>Tim
:>
:>At 05:49 PM 8/3/2005, Rick Ernst quipped:
:>
:>>I'm able to configure dot1q, but VLAN configuration only accepts VLAN IDs
:>>1-1005, even though the macreduction is enabled.
:>>
:>>
:>>On Wed, 3 Aug 2005, Tim Stevenson wrote:
:>>
:>>:>dot1q support is a function of the linecard, as well as the software.
:>>:>
:>>:>Tim
:>>:>
:>>:>At 04:46 PM 8/3/2005, Jeff Kell quipped:
:>>:>>Rick Ernst wrote:
:>>:>>
:>>:>> > I am running VLAN transparent. It's almost looking like the entire
:>>5500 is
:>>:>> > ISL.  I came across something on Google where it says that earlier
:>>IOS and
:>>:>> > devices are actually doing ISL under-the-hood for the dot1q
:>>implementation.
:>>:>> > "earlier" is not defined, but it's looking like 12.2 or 12.3 is the
:>>:>> > earliest image that has support for the full range.  I don't know if
:>>CatOS
:>>:>> > supports it directly, since the 5500 has been EOLd.
:>>:>>
:>>:>>CatOS at least back to 5.1(2) supports dot1Q:
:>>:>>
:>>:>> > UTC-5500> (enable) sho trunk
:>>:>> > * - indicates vtp domain mismatch
:>>:>> > Port      Mode         Encapsulation  Status        Native vlan
:>>:>> > --------  -----------  -------------  ------------  -----------
:>>:>> >  1/1      on           dot1q          trunking      1
:>>:>> >  3/3      on           dot1q          trunking      1
:>>:>> >  3/4      nonegotiate  isl            trunking      1
:>>:>> >  3/6      nonegotiate  isl            trunking      1
:>>:>>
:>>:>>This is a fairly "straight" 5500 (no RSM, only NFFC-II cards).
:>>:>>
:>>:>>Jeff
:>>:>>_______________________________________________
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:>>:>
:>>:>
:>>:>
:>>:>Tim Stevenson, tstevens at cisco.com
:>>:>Routing & Switching CCIE #5561
:>>:>Technical Marketing Engineer, Catalyst 6500
:>>:>Cisco Systems, http://www.cisco.com
:>>:>IP Phone: 408-526-6759
:>>:>********************************************************
:>>:>The contents of this message may be *Cisco Confidential*
:>>:>and are intended for the specified recipients only.
:>>:>
:>
:>
:>
:>Tim Stevenson, tstevens at cisco.com
:>Routing & Switching CCIE #5561
:>Technical Marketing Engineer, Catalyst 6500
:>Cisco Systems, http://www.cisco.com
:>IP Phone: 408-526-6759
:>********************************************************
:>The contents of this message may be *Cisco Confidential*
:>and are intended for the specified recipients only.
:>