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Cisco Bug: CSCsy81519 - ISG: ADJ for connected subscribers removal in Subnet Session

Last Modified

Feb 15, 2018

Products (1)

  • Cisco IOS

Known Affected Releases


Description (partial)

Symptoms: ISG subnet session feature if used in an environment where
subscribers are connected to ISG interface on Layer 2 cloud, that is, ISG is
the default gateway for the subscribers yet ISG subscribers interface is in
routed mode, then adjacency to these connected subscribers is removed as soon
as a subnet session is created and next hop is installed for these subscribers
as the logical network id computed using the framed subnet mask received from
AAA server as access accept radius attribute.

Conditions: This condition will occur for subnet session feature in scenario
where ISG interface is defined under routed mode; however subscribers are
connected over layer-2 cloud to this ISG interface, that is, ISG is the default
gateway for these subscribers.
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Bug Details Include

  • Full Description (including symptoms, conditions and workarounds)
  • Status
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