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1
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- Walt Prue With Significant Help From Ken Lindahl and Jim Warner
- Sponsored by CENIC (Corporation for Education Network Initiatives in
California
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2
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- Cisco suggested MPLS/VPN as a possible solution to CENIC’s policy routing needs.
- CENIC needs to know if it will
scale to the requirements of the network.
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3
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- Define Problem
- Examine Cisco’s ability to solve our problem
- Viability of Cisco’s solution
- Junipers Compatibility with Cisco’s MPLS/VPN
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4
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- Does it scale to 100,000+ routes?
- Can the existing equipment be used?
- Can it be maintained?
- Can CENIC introduce technology with minimal disruption?
- Can Junipers play too?
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5
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- MPLS (MultiProtocol Label Switching)
- VPN (Virtual Private Network)
- VRF (VPN Routing and Forwarding)
- PE (Provider Edge) router
- P (Provider) router
- CE (Customer Edge) router
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6
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7
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- MPLS over ethernet
- MTU discovery
- TTL
- Traceroute Across MPLS Enabled Net
- MPLS and ATM
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8
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9
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10
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11
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- Current rel. 12 software can’t support
100,000 routes
- Engine 1 gigabit ethernet ports couldn’t support MPLS/VPN
- MPLS/VPN doesn’t currently support multicast
- Cisco can forward MPLS traffic at near OC-12 line rates with engine 0
line cards
- A workaround solution exists for multicast and 100,000 routes problem
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12
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- Configuring and syntax was straight forward (see below)
- Troubleshooting was reasonable but a bit different than net engineers
are used to
- Installing on existing network would be disruptive
- Each campus would need two logical ports for access to multicast and ISP
service (use to reduce installation disruption )
- Cisco has MPLS/VPN Tools Available
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13
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14
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15
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16
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17
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18
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- Compatible if LDP used instead of TAG distribution
- A bit more complex to configure
- Can handle 200,000+ routes
- Can forward at OC-12 Line Rates
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19
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- MPLS/VPN can be used to solve our policy routing problems
- Ciscos can’t do MPLS/VPN with full routes or supporting multicast today
- With a modified network design MPLS/VPN may be our solution
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20
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- RFC2547 BGP/MPLS VPNs
- RFC 3031 Muliprotocol Label Switching Architecture
- MPLS and VPN Architectures – Cisco Press
- Juniper Documentation CD-ROM Release 5.0
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